1 files changed, 49 insertions, 0 deletions
diff --git a/devtools/server/tests/unit/test_symbols-02.js b/devtools/server/tests/unit/test_symbols-02.js
new file mode 100644
index 000000000..f80dc3322
--- /dev/null
+++ b/devtools/server/tests/unit/test_symbols-02.js
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test that we don't run debuggee code when getting symbol names.
+ */
+
+const URL = "foo.js";
+
+function run_test() {
+  initTestDebuggerServer();
+  const debuggee = addTestGlobal("test-symbols");
+  const client = new DebuggerClient(DebuggerServer.connectPipe());
+
+  client.connect().then(function () {
+    attachTestTabAndResume(client, "test-symbols", function (response, tabClient, threadClient) {
+      add_task(testSymbols.bind(null, client, debuggee));
+      run_next_test();
+    });
+  });
+
+  do_test_pending();
+}
+
+function* testSymbols(client, debuggee) {
+  const evalCode = () => {
+    Components.utils.evalInSandbox(
+      "(" + function () {
+        Symbol.prototype.toString = () => {
+          throw new Error("lololol");
+        };
+        var sym = Symbol("le troll");
+        debugger;
+      } + "())",
+      debuggee,
+      "1.8",
+      URL,
+      1
+    );
+  };
+
+  const packet = yield executeOnNextTickAndWaitForPause(evalCode, client);
+  const { sym } = packet.frame.environment.bindings.variables;
+
+  equal(sym.value.type, "symbol");
+  equal(sym.value.name, "le troll");
+
+  finishClient(client);
+}