From ddab875d6a14d3b026d3bd8380d8db83e4973b0c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Grzegorz=20=28Greg=29=20Zi=C3=B3=C5=82kowski?=
 <grzegorz@gziolo.pl>
Date: Thu, 14 Mar 2019 17:39:59 +0100
Subject: [PATCH] Improve handling of transpiled packages in unit tests
 (#14432)

---
 package.json                                  |  2 +-
 .../test/index.js                             |  2 +-
 .../components/src/disabled/test/index.js     |  2 +-
 test/unit/jest.config.js                      | 30 +++++++++++++++++++
 test/unit/jest.config.json                    | 22 --------------
 5 files changed, 33 insertions(+), 25 deletions(-)
 create mode 100644 test/unit/jest.config.js
 delete mode 100644 test/unit/jest.config.json

diff --git a/package.json b/package.json
index 6e071182be1a5..f9ada126e5e1b 100644
--- a/package.json
+++ b/package.json
@@ -186,7 +186,7 @@
 		"test-e2e": "wp-scripts test-e2e --config packages/e2e-tests/jest.config.js",
 		"test-e2e:watch": "npm run test-e2e -- --watch",
 		"test-php": "npm run lint-php && npm run test-unit-php",
-		"test-unit": "wp-scripts test-unit-js --config test/unit/jest.config.json",
+		"test-unit": "wp-scripts test-unit-js --config test/unit/jest.config.js",
 		"test-unit:update": "npm run test-unit -- --updateSnapshot",
 		"test-unit:watch": "npm run test-unit -- --watch",
 		"test-unit-php": "docker-compose run --rm wordpress_phpunit phpunit",
diff --git a/packages/block-serialization-default-parser/test/index.js b/packages/block-serialization-default-parser/test/index.js
index 72f4121ce1944..068db2ef14c72 100644
--- a/packages/block-serialization-default-parser/test/index.js
+++ b/packages/block-serialization-default-parser/test/index.js
@@ -12,7 +12,7 @@ import { jsTester, phpTester } from '@wordpress/block-serialization-spec-parser/
 /**
  * Internal dependencies
  */
-import { parse } from '../';
+import { parse } from '../src';
 
 describe( 'block-serialization-default-parser-js', jsTester( parse ) );
 
diff --git a/packages/components/src/disabled/test/index.js b/packages/components/src/disabled/test/index.js
index 36fdf3a85524d..bd7c556163e4e 100644
--- a/packages/components/src/disabled/test/index.js
+++ b/packages/components/src/disabled/test/index.js
@@ -14,7 +14,7 @@ import { Component } from '@wordpress/element';
 import Disabled from '../';
 
 jest.mock( '@wordpress/dom', () => {
-	const focus = require.requireActual( '@wordpress/dom' ).focus;
+	const focus = require.requireActual( '../../../../dom/src' ).focus;
 
 	return {
 		focus: {
diff --git a/test/unit/jest.config.js b/test/unit/jest.config.js
new file mode 100644
index 0000000000000..6c5db3c8db011
--- /dev/null
+++ b/test/unit/jest.config.js
@@ -0,0 +1,30 @@
+/**
+ * External dependencies
+ */
+const glob = require( 'glob' ).sync;
+
+// Finds all packages which are transpiled with Babel to force Jest to use their source code.
+const transpiledPackageNames = glob( 'packages/*/src/index.js' )
+	.map( ( fileName ) => fileName.split( '/' )[ 1 ] );
+
+module.exports = {
+	rootDir: '../../',
+	moduleNameMapper: {
+		[ `@wordpress\\/(${ transpiledPackageNames.join( '|' ) })$` ]: 'packages/$1/src',
+	},
+	preset: '@wordpress/jest-preset-default',
+	setupFiles: [
+		'core-js/fn/symbol/async-iterator',
+		'<rootDir>/test/unit/config/gutenberg-phase.js',
+	],
+	testURL: 'http://localhost',
+	testPathIgnorePatterns: [
+		'/node_modules/',
+		'/packages/e2e-tests',
+		'<rootDir>/.*/build/',
+		'<rootDir>/.*/build-module/',
+	],
+	transformIgnorePatterns: [
+		'node_modules/(?!(simple-html-tokenizer)/)',
+	],
+};
diff --git a/test/unit/jest.config.json b/test/unit/jest.config.json
deleted file mode 100644
index 3b7d0ca732a99..0000000000000
--- a/test/unit/jest.config.json
+++ /dev/null
@@ -1,22 +0,0 @@
-{
-	"rootDir": "../../",
-	"moduleNameMapper": {
-		"@wordpress\\/(block-serialization-spec-parser|is-shallow-equal)$": "packages/$1",
-		"@wordpress\\/([a-z0-9-]+)$": "packages/$1/src"
-	},
-	"preset": "@wordpress/jest-preset-default",
-	"setupFiles": [
-		"core-js/fn/symbol/async-iterator",
-		"<rootDir>/test/unit/config/gutenberg-phase.js"
-	],
-	"testURL": "http://localhost",
-	"testPathIgnorePatterns": [
-		"/node_modules/",
-		"/packages/e2e-tests",
-		"<rootDir>/.*/build/",
-		"<rootDir>/.*/build-module/"
-	],
-	"transformIgnorePatterns": [
-		"node_modules/(?!(simple-html-tokenizer)/)"
-	]
-}