3 files changed, 111 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webrtc-priority/META.yml b/testing/web-platform/tests/webrtc-priority/META.yml
new file mode 100644
index 0000000000..a422e81447
--- /dev/null
+++ b/testing/web-platform/tests/webrtc-priority/META.yml
@@ -0,0 +1 @@
+spec: https://w3c.github.io/webrtc-priority/
diff --git a/testing/web-platform/tests/webrtc-priority/RTCPeerConnection-ondatachannel.html b/testing/web-platform/tests/webrtc-priority/RTCPeerConnection-ondatachannel.html
new file mode 100644
index 0000000000..e4b1e8d58a
--- /dev/null
+++ b/testing/web-platform/tests/webrtc-priority/RTCPeerConnection-ondatachannel.html
@@ -0,0 +1,66 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>RTCPeerConnection.prototype.ondatachannel</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script>
+'use strict';
+
+promise_test(async (t) => {
+  const resolver = new Resolver();
+  const pc1 = new RTCPeerConnection();
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  t.add_cleanup(() => pc2.close());
+
+  const dc1 = pc1.createDataChannel('test', {
+    ordered: false,
+    maxRetransmits: 1,
+    protocol: 'custom',
+    priority: 'high'
+  });
+
+  assert_equals(dc1.priority, 'high');
+
+  pc2.ondatachannel = t.step_func((event) => {
+    const dc2 = event.channel;
+
+    assert_equals(dc2.priority, 'high');
+
+    resolver.resolve();
+  });
+
+  exchangeIceCandidates(pc1, pc2);
+  await exchangeOfferAnswer(pc1, pc2);
+
+  await resolver;
+}, 'In-band negotiated channel created on remote peer should match the same configuration as local ' +
+  'peer');
+
+promise_test(async (t) => {
+  const resolver = new Resolver();
+  const pc1 = new RTCPeerConnection();
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  t.add_cleanup(() => pc2.close());
+
+  const dc1 = pc1.createDataChannel('');
+
+  assert_equals(dc1.priority, 'low');
+
+  pc2.ondatachannel = t.step_func((event) => {
+    const dc2 = event.channel;
+    assert_equals(dc2.priority, 'low');
+
+    resolver.resolve();
+  });
+
+  exchangeIceCandidates(pc1, pc2);
+  await exchangeOfferAnswer(pc1, pc2);
+
+  await resolver;
+}, 'In-band negotiated channel created on remote peer should match the same (default) ' +
+  'configuration as local peer');
+
+</script>
diff --git a/testing/web-platform/tests/webrtc-priority/RTCRtpParameters-encodings.html b/testing/web-platform/tests/webrtc-priority/RTCRtpParameters-encodings.html
new file mode 100644
index 0000000000..1519ee84f7
--- /dev/null
+++ b/testing/web-platform/tests/webrtc-priority/RTCRtpParameters-encodings.html
@@ -0,0 +1,44 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>RTCRtpParameters encodings</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../webrtc/dictionary-helper.js"></script>
+<script src="../webrtc/RTCRtpParameters-helper.js"></script>
+<script>
+  'use strict';
+
+  promise_test(async t => {
+    const pc = new RTCPeerConnection();
+    t.add_cleanup(() => pc.close());
+    const { sender } = pc.addTransceiver('video', {
+      sendEncodings: [{
+        active: false,
+        priority: 'low',
+        networkPriority: 'low',
+        maxBitrate: 8,
+        maxFramerate: 25,
+        rid: 'foo'
+      }]
+    });
+    await doOfferAnswerExchange(t, pc);
+
+    const param = sender.getParameters();
+    validateSenderRtpParameters(param);
+    const encoding = param.encodings[0];
+
+    assert_equals(encoding.active, false);
+    assert_equals(encoding.priority, 'low');
+    assert_equals(encoding.networkPriority, 'low');
+  }, `sender.getParameters() should return sendEncodings set by addTransceiver()`);
+
+  test_modified_encoding('audio', 'active', false, true,
+    'setParameters() with modified encoding.active should succeed');
+
+  test_modified_encoding('audio', 'priority', 'very-low', 'high',
+    'setParameters() with modified encoding.priority should succeed');
+
+  test_modified_encoding('audio', 'networkPriority', 'very-low', 'high',
+    'setParameters() with modified encoding.networkPriority should succeed');
+
+</script>