1 files changed, 33 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_console_error_expand_object.js b/devtools/client/webconsole/test/browser/browser_webconsole_console_error_expand_object.js
new file mode 100644
index 0000000000..56a797115d
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_console_error_expand_object.js
@@ -0,0 +1,33 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Check console.error calls with expandable object.
+const TEST_URI =
+  "data:text/html;charset=utf8,<!DOCTYPE html><h1>test console.error with objects</h1>";
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+
+  const onMessagesLogged = waitForMessageByType(
+    hud,
+    "myError",
+    ".console-api.error"
+  );
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
+    content.wrappedJSObject.console.error("myError", { a: "a", b: "b" });
+  });
+  const { node } = await onMessagesLogged;
+
+  const objectInspectors = [...node.querySelectorAll(".tree")];
+  is(
+    objectInspectors.length,
+    1,
+    "There is the expected number of object inspectors"
+  );
+  const [oi] = objectInspectors;
+  oi.querySelector(".node .arrow").click();
+  await waitFor(() => oi.querySelectorAll(".node").length > 1);
+  ok(true, "The object can be expanded");
+});