1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_framearguments-01.js b/devtools/server/tests/xpcshell/test_framearguments-01.js
new file mode 100644
index 0000000000..1cdb8d0717
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_framearguments-01.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check a frame actor's arguments property.
+ */
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    const packet = await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    const args = packet.frame.arguments;
+    Assert.equal(args.length, 6);
+    Assert.equal(args[0], 42);
+    Assert.equal(args[1], true);
+    Assert.equal(args[2], "nasu");
+    Assert.equal(args[3].type, "null");
+    Assert.equal(args[4].type, "undefined");
+    Assert.equal(args[5].type, "object");
+    Assert.equal(args[5].class, "Object");
+    Assert.ok(!!args[5].actor);
+
+    await threadFront.resume();
+  })
+);
+
+function evalCode(debuggee) {
+  debuggee.eval(
+    "(" +
+      function() {
+        function stopMe(number, bool, string, null_, undef, object) {
+          debugger;
+        }
+        stopMe(42, true, "nasu", null, undefined, { foo: "bar" });
+      } +
+      ")()"
+  );
+}