ServiceWorker: Add new WPT tests to make sure to update a registration

with different script type and identical script content.

These tests check that a registration is updated correctly with
different script type. At first Service Worker is registered as
classic script type, then it is re-registered as module script type,
and vice versa. A main script is identical.

Bug: 824647
Change-Id: I2a3f87da1013f84c6e9495f362899dfe6ab97b45

service-workers/service-worker/resources/classic-worker.js

@@ -0,0 +1 @@
+importScripts('./imported-classic-script.js');

service-workers/service-worker/resources/module-worker.js

@@ -0,0 +1 @@
+import * as module from './imported-module-script.js';

service-workers/service-worker/update-registration-with-type.https.html

@@ -7,8 +7,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/test-helpers.sub.js"></script>
 <script>
-// These tests check that a registration is updated correctly with
-// different script type. At first Service Worker is register as
+// The following two tests check that a registration is updated correctly
+// with different script type. At first Service Worker is registered as
 // classic script type, then it is re-registered as module script type,
 // and vice versa. A main script is also updated at the same time.
 promise_test(async t => {
@@ -70,5 +70,135 @@
   assert_equals(msgEvent.data, 'A classic script.');
   assert_equals(firstRegistration, secondRegistration);
 }, 'Update the registration with a different script type (module => classic).');
+
+// The following two tests change the script type while keeping
+// the script identical.
+promise_test(async t => {
+  const script = 'resources/empty-worker.js';
+  const scope = 'resources/update-registration-with-type';
+  await service_worker_unregister(t, scope);
+  t.add_cleanup(() => service_worker_unregister(t, scope));
+
+  // Register with classic script type.
+  const firstRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'classic'
+  });
+  await wait_for_state(t, firstRegistration.installing, 'activated');
+  const firstActiveWorker = firstRegistration.active;
+
+  // Re-register with module script type.
+  const secondRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  });
+  await wait_for_state(t, secondRegistration.installing, 'activated');
+  const secondActiveWorker = secondRegistration.active;
+
+  assert_not_equals(firstActiveWorker, secondActiveWorker);
+  assert_equals(firstRegistration, secondRegistration);
+}, 'Update the registration with a different script type (classic => module) '
+    + 'and with a same main script.');
+
+promise_test(async t => {
+  const script = 'resources/empty-worker.js';
+  const scope = 'resources/update-registration-with-type';
+  await service_worker_unregister(t, scope);
+  t.add_cleanup(() => service_worker_unregister(t, scope));
+
+  // Register with module script type.
+  const firstRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  });
+  await wait_for_state(t, firstRegistration.installing, 'activated');
+  const firstActiveWorker = firstRegistration.active;
+
+  // Re-register with classic script type.
+  const secondRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'classic'
+  });
+  await wait_for_state(t, secondRegistration.installing, 'activated');
+  const secondActiveWorker = secondRegistration.active;
+
+  assert_not_equals(firstActiveWorker, secondActiveWorker);
+  assert_equals(firstRegistration, secondRegistration);
+}, 'Update the registration with a different script type (module => classic) '
+    + 'and with a same main script.');
+
+// This test checks that a registration is not updated with the same script
+// type and the same main script.
+promise_test(async t => {
+  const script = 'resources/empty-worker.js';
+  const scope = 'resources/update-registration-with-type';
+  await service_worker_unregister(t, scope);
+  t.add_cleanup(() => service_worker_unregister(t, scope));
+
+  // Register with module script type.
+  const firstRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  });
+  await wait_for_state(t, firstRegistration.installing, 'activated');
+
+  // Re-register with module script type.
+  const secondRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  });
+  assert_equals(secondRegistration.installing, null);
+
+  assert_equals(firstRegistration, secondRegistration);
+}, 'Does not update the registration with the same script type and '
+    + 'the same main script.');
+
+// In the case (classic => module), a worker script contains importScripts()
+// that is disallowed on module scripts, so the second registration is
+// expected to fail script evaluation.
+promise_test(async t => {
+  const script = 'resources/classic-worker.js';
+  const scope = 'resources/update-registration-with-type';
+  await service_worker_unregister(t, scope);
+  t.add_cleanup(() => service_worker_unregister(t, scope));
+
+  // Register with classic script type.
+  const firstRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'classic'
+  });
+  assert_not_equals(firstRegistration.installing, null);
+
+  // Re-register with module script type and expect TypeError.
+  return promise_rejects(t, new TypeError, navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  }), 'Registering with invalid evaluation should be failed.');
+}, 'Update the registration with a different script type (classic => module) '
+    + 'and with a same main script. Expect evaluation failed.');
+
+// In the case (module => classic), a worker script contains static-import
+// that is disallowed on classic scripts, so the second registration is
+// expected to fail script evaluation.
+promise_test(async t => {
+  const script = 'resources/module-worker.js';
+  const scope = 'resources/update-registration-with-type';
+  await service_worker_unregister(t, scope);
+  t.add_cleanup(() => service_worker_unregister(t, scope));
+
+  // Register with module script type.
+  const firstRegistration = await navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'module'
+  });
+  assert_not_equals(firstRegistration.installing, null);
+
+  // Re-register with classic script type and expect TypeError.
+  return promise_rejects(t, new TypeError, navigator.serviceWorker.register(script, {
+    scope: scope,
+    type: 'classic'
+  }), 'Registering with invalid evaluation should be failed.');
+}, 'Update the registration with a different script type (module => classic) '
+    + 'and with a same main script. Expect evaluation failed.');
 </script>
 </body>