| <!doctype html> |
| <title>Test processor port assignment on processor callback function construction</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script> |
| // https://webaudio.github.io/web-audio-api/#AudioWorkletProcessor-instantiation |
| |
| const get_context_for_node_name = async (node_name) => { |
| const context = new AudioContext(); |
| const filePath = `processors/construction-port-${node_name}.js`; |
| await context.audioWorklet.addModule(filePath); |
| return context; |
| } |
| |
| const test_throws = async ({node_name, thrower} = {}) => { |
| const context = await get_context_for_node_name(node_name); |
| const node = new AudioWorkletNode(context, node_name); |
| const event = await new Promise((resolve) => { |
| node.port.onmessage = resolve; |
| }); |
| assert_true(event.data.threw, `${thrower} should throw`); |
| assert_equals(event.data.errorName, "TypeError"); |
| assert_true(event.data.isTypeError, "exception should be TypeError"); |
| }; |
| |
| const throw_tests = [ |
| { |
| test_name: 'super() after new AudioWorkletProcessor()', |
| node_name: 'super-after-new', |
| thrower: 'super()' |
| }, |
| { |
| test_name: 'new AudioWorkletProcessor() after super()', |
| node_name: 'new-after-super', |
| thrower: 'new AudioWorkletProcessor()' |
| }, |
| { |
| test_name: 'new AudioWorkletProcessor() after new AudioWorkletProcessor()', |
| node_name: 'new-after-new', |
| thrower: 'new AudioWorkletProcessor()' |
| } |
| ]; |
| for (const test_info of throw_tests) { |
| promise_test(async () => test_throws(test_info), test_info.test_name); |
| } |
| |
| promise_test(async (t) => { |
| const node_name = 'singleton'; |
| const context = await get_context_for_node_name(node_name); |
| const node1 = new AudioWorkletNode(context, node_name); |
| const node2 = new AudioWorkletNode(context, node_name); |
| node2.onmessage = t.unreached_func("node2 should not receive a message"); |
| let count = 0; |
| await new Promise((resolve) => { |
| node1.port.onmessage = t.step_func((event) => { |
| assert_less_than(count, 2, "message count"); |
| if (++count == 2) { resolve(); }; |
| }); |
| }); |
| }, 'Singleton AudioWorkletProcessor'); |
| </script> |
