test: start adding capability smoke tests (#784)

test/assets/wasm/table2.html

@@ -0,0 +1,9 @@
+<script>
+async function loadTable() {
+  const tbl = new WebAssembly.Table({ initial: 2, element: 'anyfunc' });
+  const response = await fetch('table2.wasm');
+  const body = await response.arrayBuffer();
+  await WebAssembly.instantiate(body, { js: { tbl: tbl } });
+  return `${tbl.get(0)()}, ${tbl.get(1)()}`;
+}
+</script>

test/capabilities.spec.js

@@ -0,0 +1,31 @@
+/**
+ * Copyright Microsoft Corporation. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const utils = require('./utils');
+const { waitEvent } = utils;
+
+module.exports.describe = function({testRunner, expect}) {
+  const {describe, xdescribe, fdescribe} = testRunner;
+  const {it, fit, xit, dit} = testRunner;
+  const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
+
+  describe('Capabilities', function() {
+    it('Web Assembly should work', async function({page, server}) {
+      await page.goto(server.PREFIX + '/wasm/table2.html');
+      expect(await page.evaluate(() => loadTable())).toBe('42, 83');
+    });
+  });
+};

test/playwright.spec.js

@@ -171,6 +171,7 @@ module.exports.describe = ({testRunner, product, playwrightPath}) => {
       testRunner.loadTests(require('./interception.spec.js'), testOptions);
       testRunner.loadTests(require('./geolocation.spec.js'), testOptions);
       testRunner.loadTests(require('./workers.spec.js'), testOptions);
+      testRunner.loadTests(require('./capabilities.spec.js'), testOptions);
 
       if (CHROMIUM) {
         testRunner.loadTests(require('./chromium/chromium.spec.js'), testOptions);