Bug 1611855 - Worklet must be part of the same parent's agentCluster - part 4 - tests, r=padenot

Differential Revision: https://phabricator.services.mozilla.com/D61137 --HG-- extra : moz-landing-system : lando
2020-02-05 22:08:41 +00:00 · 2020-02-05 22:08:41 +00:00 · f8ed0cd543
--- a/dom/worklet/tests/mochitest.ini
+++ b/dom/worklet/tests/mochitest.ini
@ -23,3 +23,5 @@ support-files=worklet_exception.js
 [test_paintWorklet.html]
 scheme = http
 support-files=worklet_paintWorklet.js
+[test_audioWorklet_WASM.html]
+support-files=worklet_audioWorklet_WASM.js
--- a/dom/worklet/tests/test_audioWorklet_WASM.html
+++ b/dom/worklet/tests/test_audioWorklet_WASM.html
@ -0,0 +1,73 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for AudioWorklet + WASM</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript" src="common.js"></script>
+</head>
+<body>
+
+<script type="application/javascript">
+
+function configureTest() {
+  return SpecialPowers.pushPrefEnv(
+    {"set": [["dom.audioworklet.enabled", true],
+             ["dom.worklet.enabled", true],
+             ["dom.postMessage.sharedArrayBuffer.bypassCOOP_COEP.insecure.enabled", true],
+    ]});
+}
+
+function create_wasmModule() {
+  return new Promise(resolve => {
+    info("Checking if we can play with WebAssembly...");
+
+    if (!SpecialPowers.Cu.getJSTestingFunctions().wasmIsSupported()) {
+      resolve(null);
+      return;
+    }
+
+    ok(WebAssembly, "WebAssembly object should exist");
+    ok(WebAssembly.compile, "WebAssembly.compile function should exist");
+
+    const wasmTextToBinary = SpecialPowers.unwrap(SpecialPowers.Cu.getJSTestingFunctions().wasmTextToBinary);
+    const fooModuleCode = wasmTextToBinary(`(module
+      (func $foo (result i32) (i32.const 42))
+      (export "foo" $foo)
+    )`);
+
+    WebAssembly.compile(fooModuleCode).then(m => {
+      ok(m instanceof WebAssembly.Module, "The WasmModule has been compiled.");
+      resolve(m);
+    }, () => {
+      ok(false, "The compilation of the wasmModule failed.");
+      resolve(null);
+    });
+  });
+}
+
+function runTestInIframe() {
+  let audioContext = new AudioContext();
+  audioContext.audioWorklet.addModule("worklet_audioWorklet_WASM.js")
+  .then(() => create_wasmModule())
+  .then(wasmModule => {
+    const node = new AudioWorkletNode(audioContext, 'wasm');
+    let msgId = 0;
+    node.port.onmessage = e => {
+      if (msgId++ == 0) {
+        ok(e.data.wasmModule instanceof WebAssembly.Module, "WasmModule received");
+      } else {
+        ok(e.data.sab instanceof SharedArrayBuffer, "SAB received");
+        SimpleTest.finish();
+      }
+    }
+
+    node.port.postMessage({wasmModule});
+    node.port.postMessage({sab: new SharedArrayBuffer(1024)});
+    node.connect(audioContext.destination);
+  });
+}
+</script>
+
+</body>
+</html>
--- a/dom/worklet/tests/worklet_audioWorklet_WASM.js
+++ b/dom/worklet/tests/worklet_audioWorklet_WASM.js
@ -0,0 +1,16 @@
+class WasmProcessWorkletProcessor extends AudioWorkletProcessor {
+  constructor(...args) {
+    super(...args);
+    this.port.onmessage = e => {
+      // Let's send it back.
+      this.port.postMessage(e.data);
+    };
+  }
+
+  process(inputs, outputs, parameters) {
+    // Do nothing, output silence
+    return true;
+  }
+}
+
+registerProcessor("wasm", WasmProcessWorkletProcessor);