getInstalledRelatedApps: Add browser-side Mojo service (stub).

third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html

Index: third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html
diff --git a/third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html b/third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html
index 4c13b6cebb012ce83d41a30d4dab96c36b0873a9..66fedf26de334107207b4cd3d1ddc8acd9f5cf25 100644
--- a/third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html
+++ b/third_party/WebKit/LayoutTests/installedapp/getinstalledrelatedapps.html
@@ -2,19 +2,56 @@
 <link rel="manifest" href="resources/manifest.json">
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
+<script src="../resources/mojo-helpers.js"></script>
 <script src="resources/installedapp-test-helper.js"></script>
 <script>
 
-promise_test(() => {
-  // The manifest for this file has two related apps, but for now we can only
-  // expect to see an empty list in response (since we do not check whether any
-  // of the apps are installed).
+installedapp_test((t, mock) => {
+  // The expected input to the Mojo method FilterInstalledRelatedApps is the
+  // list of related_applications from this page's manifest. The mock service
+  // returns the empty list, implying that none are installed.
+  mock.pushExpectedCall(
+      [{platform: 'play', url: null, id: 'com.test'},
+       {platform: 'itunes', url: 'https://itunes.apple.com/', id: null}],
+      []);
   return navigator.getInstalledRelatedApps().then(result => {
     assert_array_relatedapplication_equals(result, []);
   });
 }, 'getInstalledRelatedApps with related apps, none installed');
 
-// TODO(mgiuca): Add another test for when the browser returns a non-empty list
-// of installed apps.
+installedapp_test((t, mock) => {
+  // The expected input to the Mojo method FilterInstalledRelatedApps is the
+  // list of related_applications from this page's manifest. The mock service
+  // returns just the 'play' entry. Expect that result to be returned by
+  // getInstalledRelatedApps.
+  mock.pushExpectedCall(
+      [{platform: 'play', url: null, id: 'com.test'},
+       {platform: 'itunes', url: 'https://itunes.apple.com/', id: null}],
+      [{platform: 'play', url: null, id: 'com.test'}]);
+  // TODO(mgiuca): The |url| field should be omitted from the result, not ''.
+  return navigator.getInstalledRelatedApps().then(result => {
+    assert_array_relatedapplication_equals(
+        result, [{platform: 'play', url: '', id: 'com.test'}]);
+  });
+}, 'getInstalledRelatedApps with related and installed apps (no url)');
+
+installedapp_test((t, mock) => {
+  // The expected input to the Mojo method FilterInstalledRelatedApps is the
+  // list of related_applications from this page's manifest. The mock service
+  // returns both entries. Expect that result to be returned by
+  // getInstalledRelatedApps.
+  mock.pushExpectedCall(
+      [{platform: 'play', url: null, id: 'com.test'},
+       {platform: 'itunes', url: 'https://itunes.apple.com/', id: null}],
+      [{platform: 'play', url: null, id: 'com.test'},
+       {platform: 'itunes', url: 'https://itunes.apple.com/', id: null}]);
+  // TODO(mgiuca): The null fields should be omitted from the result, not ''.
+  return navigator.getInstalledRelatedApps().then(result => {
+    assert_array_relatedapplication_equals(
+        result,
+        [{platform: 'play', url: '', id: 'com.test'},
+         {platform: 'itunes', url: 'https://itunes.apple.com/', id: ''}]);
+  });
+}, 'getInstalledRelatedApps with multiple related and installed apps');
 
 </script>