1 files changed, 60 insertions, 0 deletions
diff --git a/devtools/shared/tests/unit/test_invisible_loader.js b/devtools/shared/tests/unit/test_invisible_loader.js
new file mode 100644
index 000000000..96a68abc4
--- /dev/null
+++ b/devtools/shared/tests/unit/test_invisible_loader.js
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { addDebuggerToGlobal } = Cu.import("resource://gre/modules/jsdebugger.jsm", {});
+addDebuggerToGlobal(this);
+
+/**
+ * Ensure that sandboxes created via the Dev Tools loader respect the
+ * invisibleToDebugger flag.
+ */
+function run_test() {
+  visible_loader();
+  invisible_loader();
+}
+
+function visible_loader() {
+  let loader = new DevToolsLoader();
+  loader.invisibleToDebugger = false;
+  loader.require("devtools/shared/indentation");
+
+  let dbg = new Debugger();
+  let sandbox = loader._provider.loader.sharedGlobalSandbox;
+
+  try {
+    dbg.addDebuggee(sandbox);
+    do_check_true(true);
+  } catch (e) {
+    do_throw("debugger could not add visible value");
+  }
+
+  // Check that for common loader used for tabs, promise modules is Promise.jsm
+  // Which is required to support unhandled promises rejection in mochitests
+  const promise = Cu.import("resource://gre/modules/Promise.jsm", {}).Promise;
+  do_check_eq(loader.require("promise"), promise);
+}
+
+function invisible_loader() {
+  let loader = new DevToolsLoader();
+  loader.invisibleToDebugger = true;
+  loader.require("devtools/shared/indentation");
+
+  let dbg = new Debugger();
+  let sandbox = loader._provider.loader.sharedGlobalSandbox;
+
+  try {
+    dbg.addDebuggee(sandbox);
+    do_throw("debugger added invisible value");
+  } catch (e) {
+    do_check_true(true);
+  }
+
+  // But for browser toolbox loader, promise is loaded as a regular modules out
+  // of Promise-backend.js, that to be invisible to the debugger and not step
+  // into it.
+  const promise = loader.require("promise");
+  const promiseModule = loader._provider.loader.modules["resource://gre/modules/Promise-backend.js"];
+  do_check_eq(promise, promiseModule.exports);
+}