1 files changed, 26 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_destroy-before-ready.js b/devtools/client/inspector/test/browser_inspector_destroy-before-ready.js
new file mode 100644
index 0000000000..4df83e3a46
--- /dev/null
+++ b/devtools/client/inspector/test/browser_inspector_destroy-before-ready.js
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that switching to the inspector panel and not waiting for it to be fully
+// loaded doesn't fail the test with unhandled rejected promises.
+
+add_task(async function () {
+  // At least one assertion is needed to avoid failing the test, but really,
+  // what we're interested in is just having the test pass when switching to the
+  // inspector.
+  ok(true);
+
+  await addTab("data:text/html;charset=utf-8,test inspector destroy");
+
+  info("Open the toolbox on the debugger panel");
+  const toolbox = await gDevTools.showToolboxForTab(gBrowser.selectedTab, {
+    toolId: "jsdebugger",
+  });
+
+  info("Switch to the inspector panel and immediately end the test");
+  const onInspectorSelected = toolbox.once("inspector-selected");
+  toolbox.selectTool("inspector");
+  await onInspectorSelected;
+});