1 files changed, 47 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
new file mode 100644
index 0000000000..e4a5dc39ba
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
@@ -0,0 +1,47 @@
+/**
+ * @class InvalidParamArrayProcessor
+ * @extends AudioWorkletProcessor
+ *
+ * This processor intentionally returns an array with an invalid size when the
+ * processor's getter is queried.
+ */
+let singleton = undefined;
+let secondFetch = false;
+let useDescriptor = false;
+let processCounter = 0;
+
+class InvalidParamArrayProcessor extends AudioWorkletProcessor {
+  static get parameterDescriptors() {
+    if (useDescriptor)
+      return [{name: 'invalidParam'}];
+    useDescriptor = true;
+    return [];
+  }
+
+  constructor() {
+    super();
+    if (singleton === undefined)
+      singleton = this;
+    return singleton;
+  }
+
+  process(inputs, outputs, parameters) {
+    const output = outputs[0];
+    for (let channel = 0; channel < output.length; ++channel)
+      output[channel].fill(1);
+    return false;
+  }
+}
+
+// This overridden getter is invoked under the hood before process() gets
+// called. After this gets called, process() method above will be invalidated,
+// and mark the worklet node non-functional. (i.e. in an error state)
+Object.defineProperty(Object.prototype, 'invalidParam', {'get': () => {
+  if (secondFetch)
+    return new Float32Array(256);
+  secondFetch = true;
+  return new Float32Array(128);
+}});
+
+registerProcessor('invalid-param-array-1', InvalidParamArrayProcessor);
+registerProcessor('invalid-param-array-2', InvalidParamArrayProcessor);