From eccee3ede4f1debb1ad5bd34e6122bcb2cadce48 Mon Sep 17 00:00:00 2001
From: hiroshige-g <hiroshige@chromium.org>
Date: Wed, 27 May 2020 23:54:19 +0900
Subject: [PATCH] Test whether parse document check is done in
 #prepare-a-script (#23162)

This PR adds empty-src tests, which moves <script src=""> elements
between Documents before #prepare-a-script. If the parser document
check is done in #prepare-a-script, the <script>'s error event is not fired,
and thus we can more-completely test whether the parser document check is done.

This PR also does some minor refactoring / documentation clean-up, as well as
adds a TODO to remove some of the tests once https://github.com/whatwg/html/issues/2137
is closed and https://github.com/whatwg/html/pull/5575 lands.

Co-authored-by: Dominic Farolino <domfarolino@gmail.com>
---
 ...Document-fetch-error-external-classic.html |  1 -
 ...LDocument-fetch-error-external-module.html |  1 -
 ...Document-parse-error-external-classic.html |  1 -
 ...LDocument-parse-error-external-module.html |  1 -
 ...HTMLDocument-success-external-classic.html |  1 -
 ...eHTMLDocument-success-external-module.html |  1 -
 ...e-iframe-fetch-error-external-classic.html |  1 -
 ...re-iframe-fetch-error-external-module.html |  1 -
 ...e-iframe-parse-error-external-classic.html |  1 -
 ...re-iframe-parse-error-external-module.html |  1 -
 ...are-iframe-parse-error-inline-classic.html |  1 -
 ...epare-iframe-success-external-classic.html |  1 -
 ...repare-iframe-success-external-module.html |  1 -
 ...prepare-iframe-success-inline-classic.html |  1 -
 ...Document-fetch-error-external-classic.html |  1 -
 ...LDocument-fetch-error-external-module.html |  1 -
 ...Document-parse-error-external-classic.html |  1 -
 ...LDocument-parse-error-external-module.html |  1 -
 ...MLDocument-parse-error-inline-classic.html |  1 -
 ...TMLDocument-parse-error-inline-module.html |  1 -
 ...TMLDocument-success-empty-src-classic.html | 14 +++++++
 ...HTMLDocument-success-empty-src-module.html | 14 +++++++
 ...HTMLDocument-success-external-classic.html |  1 -
 ...eHTMLDocument-success-external-module.html |  1 -
 ...teHTMLDocument-success-inline-classic.html |  1 -
 ...ateHTMLDocument-success-inline-module.html |  1 -
 ...e-iframe-fetch-error-external-classic.html |  1 -
 ...re-iframe-fetch-error-external-module.html |  1 -
 ...e-iframe-parse-error-external-classic.html |  1 -
 ...re-iframe-parse-error-external-module.html |  1 -
 ...are-iframe-parse-error-inline-classic.html |  1 -
 ...pare-iframe-parse-error-inline-module.html |  1 -
 ...pare-iframe-success-empty-src-classic.html | 14 +++++++
 ...epare-iframe-success-empty-src-module.html | 14 +++++++
 ...epare-iframe-success-external-classic.html |  1 -
 ...repare-iframe-success-external-module.html |  1 -
 ...prepare-iframe-success-inline-classic.html |  1 -
 ...-prepare-iframe-success-inline-module.html |  1 -
 ...Document-fetch-error-external-classic.html |  1 -
 ...LDocument-fetch-error-external-module.html |  1 -
 ...Document-parse-error-external-classic.html |  1 -
 ...LDocument-parse-error-external-module.html |  1 -
 ...HTMLDocument-success-external-classic.html |  1 -
 ...eHTMLDocument-success-external-module.html |  1 -
 ...k-iframe-fetch-error-external-classic.html |  1 -
 ...ck-iframe-fetch-error-external-module.html |  1 -
 ...k-iframe-parse-error-external-classic.html |  1 -
 ...ck-iframe-parse-error-external-module.html |  1 -
 ...ack-iframe-parse-error-inline-classic.html |  1 -
 ...-back-iframe-success-external-classic.html |  1 -
 ...e-back-iframe-success-external-module.html |  1 -
 ...ve-back-iframe-success-inline-classic.html |  1 -
 .../moving-between-documents-helper.js        | 39 ++++++++++---------
 .../moving-between-documents-iframe.py        | 15 +++++--
 .../tools/generate.py                         | 31 ++++++++++++---
 55 files changed, 114 insertions(+), 75 deletions(-)
 create mode 100644 html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-classic.html
 create mode 100644 html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-module.html
 create mode 100644 html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-classic.html
 create mode 100644 html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-module.html

diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-classic.html
index 8a67fdc8950eb7..2b84ae80882f20 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-module.html
index 79a36234ed863e..09ee1490c1b6c6 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-classic.html
index e940df58c5ba20..477abd32cf6796 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-module.html
index 40b88a47246119..9da22764086e96 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-classic.html
index 22aaf05ada3ca2..bc4deb6f170e60 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-module.html
index c08d2807e37c0e..ff76954f9df608 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-createHTMLDocument-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-classic.html
index 2f51bc64a42be1..768120e9d8f037 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-module.html
index a423a5150a4d27..50dd80662dc8c1 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-classic.html
index d689e03dad25b8..981a0682302325 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-module.html
index f104bde62396a4..6debb4189ec09f 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-inline-classic.html
index e2ea35eebbd412..53389f20db5270 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-parse-error-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-classic.html
index c4f018187d30bd..9c4a12226a0bc9 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-module.html
index 31243eb7a58012..0a0490cfc14b04 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-inline-classic.html
index e0c9b6d08be4bf..932825709f0c26 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/after-prepare-iframe-success-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-classic.html
index f67f90fa9bc1e0..444382ac20909f 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-module.html
index 23399bcb1e15e4..e1a1f7c08f36ed 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-classic.html
index 792873fa6e62ce..6bb5ebddbd29e3 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-module.html
index 1b1f20190e30d8..10a6549f62d84d 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html
index 41b358bf96bfff..28bd9359956ca0 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-module.html
index d52210f2db5ede..e665a75629ab31 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-parse-error-inline-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-classic.html
new file mode 100644
index 00000000000000..8ee0dd1de197dc
--- /dev/null
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-classic.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="timeout" content="long">
+<title>Moving script elements between documents</title>
+<!-- This is generated by tools/generate.py. Do not manually edit. -->
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/moving-between-documents-helper.js"></script>
+
+<body>
+<script>
+runTest("before-prepare", "createHTMLDocument", "success", "empty-src", "classic");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-module.html
new file mode 100644
index 00000000000000..4791149c571cd5
--- /dev/null
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-empty-src-module.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="timeout" content="long">
+<title>Moving script elements between documents</title>
+<!-- This is generated by tools/generate.py. Do not manually edit. -->
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/moving-between-documents-helper.js"></script>
+
+<body>
+<script>
+runTest("before-prepare", "createHTMLDocument", "success", "empty-src", "module");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-classic.html
index f6a36234a1a4a9..3a3aceaf26ee6f 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-module.html
index 2ba6e606aca9cc..c15b4fc77fd4e3 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-classic.html
index d8b5018d8e79e1..576f4d468456ab 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-module.html
index 4941ec96a38012..c84d61c89ad240 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-createHTMLDocument-success-inline-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-classic.html
index b8455144727d88..febf6fcc55a0af 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-module.html
index 277f6a9200253e..f936260b8ce710 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-classic.html
index 38dd5acb891843..870c900abf0595 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html
index ef28de29e7e36b..fb44a89df1047c 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-classic.html
index fc9c1c051850f5..986e4fa3963072 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-module.html
index d20595b755a924..3a3fc384794f03 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-inline-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-classic.html
new file mode 100644
index 00000000000000..4f03a9435812af
--- /dev/null
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-classic.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="timeout" content="long">
+<title>Moving script elements between documents</title>
+<!-- This is generated by tools/generate.py. Do not manually edit. -->
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/moving-between-documents-helper.js"></script>
+
+<body>
+<script>
+runTest("before-prepare", "iframe", "success", "empty-src", "classic");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-module.html
new file mode 100644
index 00000000000000..a7bd42fd32fe22
--- /dev/null
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-empty-src-module.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="timeout" content="long">
+<title>Moving script elements between documents</title>
+<!-- This is generated by tools/generate.py. Do not manually edit. -->
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/moving-between-documents-helper.js"></script>
+
+<body>
+<script>
+runTest("before-prepare", "iframe", "success", "empty-src", "module");
+</script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-classic.html
index 80e7d317878b00..08a8ac4afae2bd 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-module.html
index 932d8d7d3b3600..b8c3f79feaed0a 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-classic.html
index 9150714cf3f5ec..b639f6109d136f 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-module.html
index a6191c0ede6a64..616e46310f6bf6 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-success-inline-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-classic.html
index 150d1ef7e33183..745c62d8983726 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-module.html
index 41d8f271b953a6..f6353a05fcbcf9 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-classic.html
index 2fed35acf84d93..21099c3ff97b11 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-module.html
index 34fe929185af04..2eb153acfe563a 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-classic.html
index 7f7fb9a26570ec..88821826edb16c 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-module.html
index 13a53f1c7c435e..f2a9d9574122c2 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-createHTMLDocument-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-classic.html
index 81a822e8ec58ec..d96bfe0d505e43 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-module.html
index 7c7f5306305a03..7e71bfbe158a77 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-fetch-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-classic.html
index 45a95bc0fca966..757c879897e351 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-module.html
index 3d2df395bd7989..6ec6c5970efa4e 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-inline-classic.html
index 7875282087ac5f..c0b0f9d4047136 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-parse-error-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-classic.html
index 6409e2cb829ff2..7955dbce627b75 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-module.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-module.html
index fbe63beeba0f06..af17eb01f75b31 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-module.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-external-module.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-inline-classic.html b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-inline-classic.html
index 4bd10a39d296f7..8a44e2feaf1df8 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-inline-classic.html
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/move-back-iframe-success-inline-classic.html
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js b/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js
index 01fb366aa86f2d..de4af6ac10abf6 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-helper.js
@@ -30,10 +30,9 @@ function createDocument(documentType, result, inlineOrExternal, type, hasBlockin
   });
 }
 
-window.scriptErrorEventFired = false;
 window.didExecute = undefined;
 
-// For a script, there are four associated Documents that can
+// For a script, there are three associated Documents that can
 // potentially different:
 //
 // [1] script's parser document
@@ -48,7 +47,7 @@ window.didExecute = undefined;
 //
 // This helper is for tests where [1]/[2]/[3] are different.
 
-// In the spec, scripts are not executed only if [1]/[2]/[3] are all the same
+// In the spec, scripts are executed only if [1]/[2]/[3] are all the same
 // (or [1] is null and [2]==[3]).
 //
 // A check for [1]==[2] is in #prepare-a-script and
@@ -75,6 +74,11 @@ window.didExecute = undefined;
 //     https://github.com/whatwg/html/issues/1349
 //     https://github.com/chrishtr/rendering/blob/master/stylesheet-loading-proposal.md
 //
+//   TODO(domfarolino): Remove the "parsing but moved back" tests, because if a
+//   <script> is moved before #prepare-a-script, per spec it should never make
+//   it to #execute-the-script-block. If an implementation does not implement
+//   the check in #prepare-a-script, then it will fail the "before-prepare"
+//   tests, so these are not necessary.
 //   "parsing but moved back"
 //     A <script> is moved before #prepare-a-script, but moved back again
 //     to the original Document after #prepare-a-script.
@@ -82,13 +86,9 @@ window.didExecute = undefined;
 //
 // destType: "iframe" or "createHTMLDocument".
 // result: "fetch-error", "parse-error", or "success".
-// inlineOrExternal: "inline" or "external".
+// inlineOrExternal: "inline" or "external" or "empty-src".
 // type: "classic" or "module".
 async function runTest(timing, destType, result, inlineOrExternal, type) {
-  if (result === "fetch-error" && inlineOrExternal === "inline") {
-    return;
-  }
-
   const description =
       `Move ${result} ${inlineOrExternal} ${type} script ` +
       `to ${destType} ${timing}`;
@@ -112,19 +112,19 @@ async function runTest(timing, destType, result, inlineOrExternal, type) {
   const [destWindow, destDocument] = await createDocument(
       destType, null, null, null, hasBlockingStylesheet);
 
-  let scriptErrorEventFired = false;
+  const scriptOnLoad =
+    tScriptLoadEvent.unreached_func("Script load event fired unexpectedly");
   const scriptOnError = (event) => {
     // For Firefox: Prevent window.onerror is fired due to propagation
     // from <script>'s error event.
     event.stopPropagation();
 
-    tScriptErrorEvent.unreached_func("Event fired unexpectedly")();
+    tScriptErrorEvent.unreached_func("Script error evennt fired unexpectedly")();
   };
 
   sourceWindow.didExecute = false;
   sourceWindow.t = t;
-  sourceWindow.tScriptLoadEvent = tScriptLoadEvent;
-  sourceWindow.tScriptErrorEvent = tScriptErrorEvent;
+  sourceWindow.scriptOnLoad = scriptOnLoad;
   sourceWindow.scriptOnError = scriptOnError;
   sourceWindow.onerror = tWindowErrorEvent.unreached_func(
       "Window error event shouldn't fired on source window");
@@ -132,8 +132,7 @@ async function runTest(timing, destType, result, inlineOrExternal, type) {
 
   destWindow.didExecute = false;
   destWindow.t = t;
-  destWindow.tScriptLoadEvent = tScriptLoadEvent;
-  destWindow.tScriptErrorEvent = tScriptErrorEvent;
+  destWindow.scriptOnLoad = scriptOnLoad;
   destWindow.scriptOnError = scriptOnError;
   destWindow.onerror = tWindowErrorEvent.unreached_func(
       "Window error event shouldn't fired on destination window");
@@ -158,10 +157,14 @@ async function runTest(timing, destType, result, inlineOrExternal, type) {
 
   // t=2 sec: Move between documents after #prepare-a-script.
   if (timing === "after-prepare") {
-   destDocument.body.appendChild(
+    // At this point, the script hasn't been moved yet, so we'll move it for the
+    // first time, after #prepare-a-script, but before #execute-the-script-block.
+    destDocument.body.appendChild(
       sourceDocument.querySelector("streaming-element"));
-  }
-  else if (timing === "move-back") {
+  } else if (timing === "move-back") {
+    // At this point the script has already been moved to the destination block
+    // before #prepare-a-script, so we'll move it back to the source document
+    // before #execute-the-script-block.
     sourceDocument.body.appendChild(
       destDocument.querySelector("streaming-element"));
   }
@@ -205,8 +208,6 @@ async_test(t => {
   t.step_timeout(() => {
       assert_equals(window.didExecute, undefined,
         "The script must not have executed in the top-level window");
-      assert_false(window.scriptErrorEventFired,
-        "Top-level window's scriptErrorEventFired should be untouched");
       t.done();
     },
     4000);
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-iframe.py b/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-iframe.py
index 4b293d697d7a4e..e54c3b945287ee 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-iframe.py
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/resources/moving-between-documents-iframe.py
@@ -33,7 +33,7 @@ def main(request, response):
     <body>
   """
 
-  if inlineOrExternal == "inline" or inlineOrExternal == "external":
+  if inlineOrExternal == "inline" or inlineOrExternal == "external" or inlineOrExternal == "empty-src":
     body += """
       <streaming-element>
     """
@@ -52,7 +52,7 @@ def main(request, response):
     time.sleep(1)
     body += """
         <script id="s1" type="%s"
-                onload="tScriptLoadEvent.unreached_func('onload')"
+                onload="scriptOnLoad()"
                 onerror="scriptOnError(event)">
         if (!window.readyToEvaluate) {
           window.didExecute = "executed too early";
@@ -72,10 +72,19 @@ def main(request, response):
     body += """
         <script id="s1" type="%s"
                 src="slow-flag-setter.py?result=%s&cache=%s"
-                onload="tScriptLoadEvent.unreached_func('onload')"
+                onload="scriptOnLoad()"
                 onerror="scriptOnError(event)"></script>
       </streaming-element>
     """ % (type, result, random.random())
+  elif inlineOrExternal == "empty-src":
+    time.sleep(1)
+    body += """
+        <script id="s1" type="%s"
+                src=""
+                onload="scriptOnLoad()"
+                onerror="scriptOnError(event)"></script>
+      </streaming-element>
+    """ % (type,)
 
   #        // if readyToEvaluate is false, the script is probably
   #       // wasn't blocked by stylesheets as expected.
diff --git a/html/semantics/scripting-1/the-script-element/moving-between-documents/tools/generate.py b/html/semantics/scripting-1/the-script-element/moving-between-documents/tools/generate.py
index 0612023fd4c970..80a655e821b8b0 100644
--- a/html/semantics/scripting-1/the-script-element/moving-between-documents/tools/generate.py
+++ b/html/semantics/scripting-1/the-script-element/moving-between-documents/tools/generate.py
@@ -3,7 +3,6 @@
 <meta name="timeout" content="long">
 <title>Moving script elements between documents</title>
 <!-- This is generated by tools/generate.py. Do not manually edit. -->
-<link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
@@ -18,13 +17,35 @@
 n = 0
 for timing in ["before-prepare", "after-prepare", "move-back"]:
   for destType in ["iframe", "createHTMLDocument"]:
-    for result in ["fetch-error", "parse-error", "success"]:
-      for inlineOrExternal in ["inline", "external"]:
+    for inlineOrExternal in ["inline", "external", "empty-src"]:
+      for result in ["fetch-error", "parse-error", "success"]:
         for type in ["classic", "module"]:
-          # No fetch error for inline scripts.
-          if result == "fetch-error" and inlineOrExternal == "inline":
+            # The |inlineOrExternal| keyword creates a certain kind of script,
+            # and the |result| keyword can influence the generated script in
+            # different ways i.e., giving the script a parse-error, or creating
+            # a script that fails to load. When we're creating an inline script,
+            # it doesn't make sense to test the fetch-error case, so we ignore
+            # this combination, as the server will not react to it in any
+            # meaningful way.
+          if inlineOrExternal == "inline" and result == "fetch-error":
             continue
 
+          if inlineOrExternal == "empty-src":
+            # The "empty-src" tests aim to exercise #prepare-a-script step 26
+            # substep 2, where the <script> has a src attribute that is empty:
+            #   "If src is the empty string, queue a task to fire an event named
+            #    error at the element, and return."
+            # Therefore, the server will generate a script that does not have a
+            # "parse-error" or "fetch-error", so we can ignore these combinations.
+            if result != "success":
+              continue
+
+            # The "empty-src" tests check that the parser document <=> node document
+            # check is implemented correctly in #prepare-a-script. Therefore we're
+            # only interested in tests that move the <script> before #prepare-a-script.
+            if timing != "before-prepare":
+              continue
+
           # The current test helper uses
           # #has-a-style-sheet-that-is-blocking-scripts to block script
           # evaluation after #prepare-a-script, but in some cases this