1 files changed, 47 insertions, 0 deletions
diff --git a/toolkit/devtools/webaudioeditor/test/browser_audionode-actor-get-param-flags.js b/toolkit/devtools/webaudioeditor/test/browser_audionode-actor-get-param-flags.js
new file mode 100644
index 000000000..c7ba798af
--- /dev/null
+++ b/toolkit/devtools/webaudioeditor/test/browser_audionode-actor-get-param-flags.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test AudioNode#getParamFlags()
+ */
+
+add_task(function*() {
+  let { target, front } = yield initBackend(SIMPLE_NODES_URL);
+  let [_, nodes] = yield Promise.all([
+    front.setup({ reload: true }),
+    getN(front, "create-node", 15)
+  ]);
+
+  let allNodeParams = yield Promise.all(nodes.map(node => node.getParams()));
+  let nodeTypes = [
+    "AudioDestinationNode",
+    "AudioBufferSourceNode", "ScriptProcessorNode", "AnalyserNode", "GainNode",
+    "DelayNode", "BiquadFilterNode", "WaveShaperNode", "PannerNode", "ConvolverNode",
+    "ChannelSplitterNode", "ChannelMergerNode", "DynamicsCompressorNode", "OscillatorNode",
+    "StereoPannerNode"
+  ];
+
+  // For some reason nodeTypes.forEach and params.forEach fail here so we use
+  // simple for loops.
+  for (let i = 0; i < nodeTypes.length; i++) {
+    let type = nodeTypes[i];
+    let params = allNodeParams[i];
+
+    for (let {param, value, flags} of params) {
+      let testFlags = yield nodes[i].getParamFlags(param);
+      ok(typeof testFlags === "object", type + " has flags from #getParamFlags(" + param + ")");
+
+      if (param === "buffer") {
+        is(flags.Buffer, true, "`buffer` params have Buffer flag");
+      }
+      else if (param === "bufferSize" || param === "frequencyBinCount") {
+        is(flags.readonly, true, param + " is readonly");
+      }
+      else if (param === "curve") {
+        is(flags["Float32Array"], true, "`curve` param has Float32Array flag");
+      }
+    }
+  }
+
+  yield removeTab(target.tab);
+});