Update web-platform-tests to revision 9ca57e052ba1b19fa3dd46c6aa656e8d529469a8

tests/wpt/web-platform-tests/webcodecs/utils.js

@@ -0,0 +1,126 @@
+function makeImageBitmap(width, height) {
+  let canvas = new OffscreenCanvas(width, height);
+
+  let ctx = canvas.getContext('2d');
+  ctx.fillStyle = 'rgba(50, 100, 150, 255)';
+  ctx.fillRect(0, 0, width, height);
+
+  return canvas.transferToImageBitmap();
+}
+
+// Gives a chance to pending output and error callbacks to complete before
+// resolving.
+function endAfterEventLoopTurn() {
+  return new Promise(resolve => step_timeout(resolve, 0));
+}
+
+// Returns a codec initialization with callbacks that expected to not be called.
+function getDefaultCodecInit(test) {
+  return {
+    output: test.unreached_func("unexpected output"),
+    error: test.unreached_func("unexpected error"),
+  }
+}
+
+// Checks that codec can be configured, reset, reconfigured, and that incomplete
+// or invalid configs throw errors immediately.
+function testConfigurations(codec, validCondig, invalidCodecs) {
+  assert_equals(codec.state, "unconfigured");
+
+  const requiredConfigPairs = validCondig;
+  let incrementalConfig = {};
+
+  for (let key in requiredConfigPairs) {
+    // Configure should fail while required keys are missing.
+    assert_throws_js(TypeError, () => { codec.configure(incrementalConfig); });
+    incrementalConfig[key] = requiredConfigPairs[key];
+    assert_equals(codec.state, "unconfigured");
+  }
+
+  // Configure should pass once incrementalConfig meets all requirements.
+  codec.configure(incrementalConfig);
+  assert_equals(codec.state, "configured");
+
+  // We should be able to reconfigure the codec.
+  codec.configure(incrementalConfig);
+  assert_equals(codec.state, "configured");
+
+  let config = incrementalConfig;
+
+  invalidCodecs.forEach(badCodec => {
+    // Invalid codecs should fail.
+    config.codec = badCodec;
+    assert_throws_js(TypeError, () => { codec.configure(config); }, badCodec);
+  })
+
+  // The failed configures should not affect the current config.
+  assert_equals(codec.state, "configured");
+
+  // Test we can configure after a reset.
+  codec.reset()
+  assert_equals(codec.state, "unconfigured");
+
+  codec.configure(validCondig);
+  assert_equals(codec.state, "configured");
+}
+
+// Performs an encode or decode with the provided input, depending on whether
+// the passed codec is an encoder or a decoder.
+function encodeOrDecodeShouldThrow(codec, input) {
+  // We are testing encode/decode on codecs in invalid states.
+  assert_not_equals(codec.state, "configured");
+
+  if (codec.decode) {
+    assert_throws_dom("InvalidStateError",
+                      () => codec.decode(input),
+                      "decode");
+  } else if (codec.encode) {
+    // Encoders consume frames, so clone it to be safe.
+    assert_throws_dom("InvalidStateError",
+                  () => codec.encode(input.clone()),
+                  "encode");
+
+  } else {
+    assert_unreached("Codec should have encode or decode function");
+  }
+}
+
+// Makes sure that we cannot close, configure, reset, flush, decode or encode a
+// closed codec.
+function testClosedCodec(test, codec, validconfig, codecInput) {
+  assert_equals(codec.state, "unconfigured");
+
+  codec.close();
+  assert_equals(codec.state, "closed");
+
+  assert_throws_dom("InvalidStateError",
+                    () => codec.configure(validconfig),
+                    "configure");
+  assert_throws_dom("InvalidStateError",
+                    () => codec.reset(),
+                    "reset");
+  assert_throws_dom("InvalidStateError",
+                    () => codec.close(),
+                    "close");
+
+  encodeOrDecodeShouldThrow(codec, codecInput);
+
+  return promise_rejects_dom(test, 'InvalidStateError', codec.flush(), 'flush');
+}
+
+// Makes sure we cannot flush, encode or decode with an unconfigured coded, and
+// that reset is a valid no-op.
+function testUnconfiguredCodec(test, codec, codecInput) {
+  assert_equals(codec.state, "unconfigured");
+
+  // Configure() and Close() are valid operations that would transition us into
+  // a different state.
+
+  // Resetting an unconfigured encoder is a no-op.
+  codec.reset();
+  assert_equals(codec.state, "unconfigured");
+
+  encodeOrDecodeShouldThrow(codec, codecInput);
+
+  return promise_rejects_dom(test, 'InvalidStateError', codec.flush(), 'flush');
+}