Start of foreign fetch implementation.

third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/register-foreign-fetch-errors-worker.js

Index: third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/register-foreign-fetch-errors-worker.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/register-foreign-fetch-errors-worker.js b/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/register-foreign-fetch-errors-worker.js
new file mode 100644
index 0000000000000000000000000000000000000000..fcbb266fef4247d6438a04dd205c87e3503b285f
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/register-foreign-fetch-errors-worker.js
@@ -0,0 +1,65 @@
+self.addEventListener('install', function(event) {
+    var scope = registration.scope;
+    var scope_url = new URL(scope);
+
+    test(function() {
+        assert_throws(new TypeError(), function() {
+            event.registerForeignFetchScopes(scope);
+          });
+      }, 'Not an array');
+
+    test(function() {
+        assert_throws(new TypeError(), function() {
+            event.registerForeignFetchScopes([{}]);
+          });
+      }, 'Not a string in array');
+
+    test(function() {
+        assert_throws(new TypeError(), function() {
+            event.registerForeignFetchScopes(['/foo']);
+          });
+      }, 'Relative url not under scope');
+
+    test(function() {
+        var url = new URL(scope_url);
+        url.host = 'example.com';
+        assert_throws(new TypeError(), function() {
+            event.registerForeignFetchScopes([url.href]);
+          });
+      }, 'Absolute url not under scope');
+
+    async_test(function(t) {
+        self.setTimeout(t.step_func(function() {
+            assert_throws('InvalidStateError', function() {
+                event.registerForeignFetchScopes([scope]);
+              });
+            t.done();
+          }), 1);
+      }, 'Call after event returned');
+
+    test(function() {
+        event.registerForeignFetchScopes([]);
+      }, 'Empty array');
+
+    test(function() {
+        event.registerForeignFetchScopes([scope, scope + '/foo']);
+      }, 'Absolute urls');
+
+    test(function() {
+        // Figure out scope relative to location of this script:
+        var local_dir = location.pathname;
+        local_dir = local_dir.substr(0, local_dir.lastIndexOf('/'));
+        assert_true(scope_url.pathname.startsWith(local_dir));
+        var relative_scope = scope_url.pathname.substr(local_dir.length + 1);
+
+        event.registerForeignFetchScopes([
+          scope_url.pathname,
+          relative_scope,
+          './' + relative_scope,
+          relative_scope + '/foo']);
+      }, 'Relative urls');
+  });
+
+// Import testharness after install handler to make sure our install handler
+// runs first. Otherwise only one test will run.
+importScripts('../../resources/testharness.js');