1 files changed, 44 insertions, 0 deletions
diff --git a/devtools/client/webaudioeditor/test/browser_wa_properties-view-edit-02.js b/devtools/client/webaudioeditor/test/browser_wa_properties-view-edit-02.js
new file mode 100644
index 000000000..d7c54822d
--- /dev/null
+++ b/devtools/client/webaudioeditor/test/browser_wa_properties-view-edit-02.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that properties are not updated when modifying the VariablesView.
+ */
+
+add_task(function* () {
+  let { target, panel } = yield initWebAudioEditor(COMPLEX_CONTEXT_URL);
+  let { panelWin } = panel;
+  let { gFront, $, $$, EVENTS, PropertiesView } = panelWin;
+  let gVars = PropertiesView._propsView;
+
+  let started = once(gFront, "start-context");
+
+  let events = Promise.all([
+    getN(gFront, "create-node", 8),
+    waitForGraphRendered(panelWin, 8, 8)
+  ]);
+  reload(target);
+  let [actors] = yield events;
+  let nodeIds = actors.map(actor => actor.actorID);
+
+  click(panelWin, findGraphNode(panelWin, nodeIds[3]));
+  // Wait for the node to be set as well as the inspector to come fully into the view
+  yield Promise.all([
+    waitForInspectorRender(panelWin, EVENTS),
+    once(panelWin, EVENTS.UI_INSPECTOR_TOGGLED),
+  ]);
+
+  let errorEvent = once(panelWin, EVENTS.UI_SET_PARAM_ERROR);
+
+  try {
+    yield modifyVariableView(panelWin, gVars, 0, "bufferSize", 2048);
+  } catch (e) {
+    // we except modifyVariableView to fail here, because bufferSize is not writable
+  }
+
+  yield errorEvent;
+
+  checkVariableView(gVars, 0, {bufferSize: 4096}, "check that unwritable variable is not updated");
+
+  yield teardown(target);
+});