[Media Session] Implement position state API

beccahughes · chromium-wpt-export-bot · commit b3624301279f · 2019-08-07T17:43:59.000-04:00
Implement the new setPositionState API in Blink. BUG=984620 Change-Id: I7a6eb1849f4e4afba2fb51771a6485aa58a7cdaf Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1730773 Reviewed-by: Daniel Cheng <dcheng@chromium.org> Reviewed-by: Mounir Lamouri <mlamouri@chromium.org> Commit-Queue: Becca Hughes <beccahughes@chromium.org> Cr-Commit-Position: refs/heads/master@{#684943}
diff --git a/mediasession/idlharness.window.js b/mediasession/idlharness.window.js
@@ -1,7 +1,7 @@
 // META: script=/resources/WebIDLParser.js
 // META: script=/resources/idlharness.js
 
-// https://wicg.github.io/mediasession/
+// https://w3c.github.io/mediasession/
 
 'use strict';
 
diff --git a/mediasession/positionstate.html b/mediasession/positionstate.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html>
+<title>MediaSession.setPositionState</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+test(() => {
+  window.navigator.mediaSession.setPositionState(null);
+}, 'Test setPositionState with a null value');
+
+test(() => {
+  window.navigator.mediaSession.setPositionState({
+    duration: 60.9,
+    position: 10.1,
+    playbackRate: 1.5
+  });
+}, 'Test setPositionState with a valid value for forward playback');
+
+test(() => {
+  window.navigator.mediaSession.setPositionState({
+    duration: 60.9,
+    playbackRate: 1.0
+  });
+}, 'Test setPositionState with optional position');
+
+test(() => {
+  window.navigator.mediaSession.setPositionState({
+    duration: 60.9,
+    position: 10.1
+  });
+}, 'Test setPositionState with optional playback rate');
+
+test(() => {
+  window.navigator.mediaSession.setPositionState({
+    duration: 60.9
+  });
+}, 'Test setPositionState with only duration');
+
+test(() => {
+  window.navigator.mediaSession.setPositionState({
+    duration: 0
+  });
+}, 'Test setPositionState with zero duration');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          duration: 60.9,
+          position: 10.1,
+          playbackRate: -2.0
+        });
+      });
+}, 'Test setPositionState throws a TypeError if playback rate is negative');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          duration: -1
+        });
+      });
+}, 'Test setPositionState throws a TypeError if duration is negative');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          duration: 10,
+          position: -1
+        });
+      });
+}, 'Test setPositionState throws a TypeError if position is negative');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          duration: 10,
+          position: 20
+        });
+      });
+}, 'Test setPositionState throws a TypeError if duration is less than position');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          duration: 60.9,
+          position: 10.1,
+          playbackRate: 0.0
+        });
+      });
+}, 'Test setPositionState throws a TypeError if playback rate is zero');
+
+test(() => {
+  assert_throws(
+      new TypeError,
+      _ => {
+        window.navigator.mediaSession.setPositionState({
+          position: 10.1,
+          playbackRate: 1.0
+        });
+      });
+}, 'Test setPositionState throws a TypeError if duration is not specified');
+</script>
