Add BFCache WPT for pages with WebSocket/WebTransport/WebRTC

This CL adds some missing WPT for BFCache interaction with WebSocket,
WebTransport and WebRTC. The page should not be BFCached if there is
open connection correspondingly. After the connection is closed, the
page should be eligible for BFCache again.

Bug: 1446619
Change-Id: Id0b70afed08d3b2520767d09513b6a6c56afb744

webrtc/back-forward-cache-with-closed-webrtc-connection.https.window.js

@@ -0,0 +1,19 @@
+// META: title=Testing BFCache support for page with closed WebRTC connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=resources/webrtc-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openThenCloseWebRTC(rc1);
+  // The page should be eligible for BFCache because the WebRTC connection is closed.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ true);
+});

webrtc/back-forward-cache-with-open-webrtc-connection.https.window.js

@@ -0,0 +1,20 @@
+// META: title=Testing BFCache support for page with open WebRTC connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=resources/webrtc-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openWebRTC(rc1);
+  // The page should not be eligible for BFCache because of open WebRTC connection.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ false);
+  await assertNotRestoredFromBFCache(rc1, ['WebRTC']);
+});

webrtc/resources/webrtc-test-helpers.sub.js

@@ -0,0 +1,79 @@
+// SDP copied from JSEP Example 7.1
+// It contains two media streams with different ufrags
+// to test if candidate is added to the correct stream
+const sdp = `v=0
+o=- 4962303333179871722 1 IN IP4 0.0.0.0
+s=-
+t=0 0
+a=ice-options:trickle
+a=group:BUNDLE a1 v1
+a=group:LS a1 v1
+m=audio 10100 UDP/TLS/RTP/SAVPF 96 0 8 97 98
+c=IN IP4 203.0.113.100
+a=mid:a1
+a=sendrecv
+a=rtpmap:96 opus/48000/2
+a=rtpmap:0 PCMU/8000
+a=rtpmap:8 PCMA/8000
+a=rtpmap:97 telephone-event/8000
+a=rtpmap:98 telephone-event/48000
+a=maxptime:120
+a=extmap:1 urn:ietf:params:rtp-hdrext:sdes:mid
+a=extmap:2 urn:ietf:params:rtp-hdrext:ssrc-audio-level
+a=msid:47017fee-b6c1-4162-929c-a25110252400 f83006c5-a0ff-4e0a-9ed9-d3e6747be7d9
+a=ice-ufrag:ETEn
+a=ice-pwd:OtSK0WpNtpUjkY4+86js7ZQl
+a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
+a=setup:actpass
+a=dtls-id:1
+a=rtcp:10101 IN IP4 203.0.113.100
+a=rtcp-mux
+a=rtcp-rsize
+m=video 10102 UDP/TLS/RTP/SAVPF 100 101
+c=IN IP4 203.0.113.100
+a=mid:v1
+a=sendrecv
+a=rtpmap:100 VP8/90000
+a=rtpmap:101 rtx/90000
+a=fmtp:101 apt=100
+a=extmap:1 urn:ietf:params:rtp-hdrext:sdes:mid
+a=rtcp-fb:100 ccm fir
+a=rtcp-fb:100 nack
+a=rtcp-fb:100 nack pli
+a=msid:47017fee-b6c1-4162-929c-a25110252400 f30bdb4a-5db8-49b5-bcdc-e0c9a23172e0
+a=ice-ufrag:BGKk
+a=ice-pwd:mqyWsAjvtKwTGnvhPztQ9mIf
+a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
+a=setup:actpass
+a=dtls-id:1
+a=rtcp:10103 IN IP4 203.0.113.100
+a=rtcp-mux
+a=rtcp-rsize
+`;
+
+const sessionDesc = { type: 'offer', sdp };
+const candidate = {
+  candidate: 'candidate:1 1 udp 2113929471 203.0.113.100 10100 typ host',
+  sdpMid: 'a1',
+  sdpMLineIndex: 0,
+  usernameFragment: 'ETEn'
+};
+
+// Opens a new WebRTC connection.
+async function openWebRTC(remoteContextHelper) {
+  await remoteContextHelper.executeScript(async (sessionDesc, candidate) => {
+    const testRTCPeerConnection = new RTCPeerConnection();
+    await testRTCPeerConnection.setRemoteDescription(sessionDesc);
+    await testRTCPeerConnection.addIceCandidate(candidate);
+  }, [sessionDesc, candidate]);
+}
+
+// Opens a new WebRTC connection and then close it.
+async function openThenCloseWebRTC(remoteContextHelper) {
+  await remoteContextHelper.executeScript(async (sessionDesc, candidate) => {
+    const testRTCPeerConnection = new RTCPeerConnection();
+    await testRTCPeerConnection.setRemoteDescription(sessionDesc);
+    await testRTCPeerConnection.addIceCandidate(candidate);
+    testRTCPeerConnection.close();
+  }, [sessionDesc, candidate]);
+}

websockets/back-forward-cache-with-closed-websocket-connection.window.js

@@ -0,0 +1,20 @@
+// META: title=Testing BFCache support for page with closed WebSocket connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=/websockets/constants.sub.js
+// META: script=resources/websockets-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openThenCloseWebSocket(rc1);
+  // The page should be eligible for BFCache because the WebSocket connection has been closed.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ true);
+});

websockets/back-forward-cache-with-open-websocket-connection.window.js

@@ -0,0 +1,21 @@
+// META: title=Testing BFCache support for page with open WebSocket connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=/websockets/constants.sub.js
+// META: script=resources/websockets-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openWebSocket(rc1);
+  // The page should not be eligible for BFCache because of open WebSocket connection.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ false);
+  await assertNotRestoredFromBFCache(rc1, ['WebSocket']);
+});

websockets/resources/websockets-test-helpers.sub.js

@@ -0,0 +1,25 @@
+// The file including this must also include `/websockets/constants.sub.js to
+// pick up the necessary constants.
+
+// Opens a new WebSocket connection.
+async function openWebSocket(remoteContextHelper) {
+  let return_value = await remoteContextHelper.executeScript((domain) => {
+    return new Promise((resolve) => {
+      var webSocketInNotRestoredReasonsTests = new WebSocket(domain + '/echo');
+      webSocketInNotRestoredReasonsTests.onopen = () => { resolve(42); };
+    });
+  }, [SCHEME_DOMAIN_PORT]);
+  assert_equals(return_value, 42);
+}
+
+// Opens a new WebSocket connection and then close it.
+async function openThenCloseWebSocket(remoteContextHelper) {
+  let return_value = await remoteContextHelper.executeScript((domain) => {
+    return new Promise((resolve) => {
+      var testWebSocket = new WebSocket(domain + '/echo');
+      testWebSocket.onopen = () => { testWebSocket.close() };
+      testWebSocket.onclose = () => { resolve(42) };
+    });
+  }, [SCHEME_DOMAIN_PORT]);
+  assert_equals(return_value, 42);
+}

webtransport/back-forward-cache-with-closed-webtransport-connection.https.window.js

@@ -0,0 +1,20 @@
+// META: title=Testing BFCache support for page with closed WebTransport connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=resources/webtransport-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openThenCloseWebTransport(rc1);
+  // The page should be eligible for BFCache because the WebTransport connection is closed.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ true);
+});

webtransport/back-forward-cache-with-open-webtransport-connection.https.window.js

@@ -0,0 +1,21 @@
+// META: title=Testing BFCache support for page with open WebTransport connection.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=resources/webtransport-test-helpers.sub.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ { features: 'noopener' });
+  await openWebTransport(rc1);
+  // The page should not be eligible for BFCache because of open WebTransport connection.
+  await assertBFCacheEligibility(rc1, /*shouldRestoreFromBFCache=*/ false);
+  await assertNotRestoredFromBFCache(rc1, ['WebTransport']);
+});

webtransport/resources/webtransport-test-helpers.sub.js

@@ -110,3 +110,23 @@ async function readInto(reader, buffer) {
 
   return buffer;
 }
+
+// Opens a new WebTransport connection.
+async function openWebTransport(remoteContextHelper) {
+  const url = webtransport_url('custom-response.py?:status=200');
+  await remoteContextHelper.executeScript((url) => {
+    const testWebTransport = new WebTransport(url);
+    return testWebTransport.ready;
+  }, [url]);
+}
+
+// Opens a new WebTransport connection and then close it.
+async function openThenCloseWebTransport(remoteContextHelper) {
+  const url = webtransport_url('custom-response.py?:status=200');
+  await remoteContextHelper.executeScript((url) => {
+    const testWebTransport = new WebTransport(url);
+    return testWebTransport.ready.then(() => {
+      testWebTransport.close();
+    });
+  }, [url]);
+}