1 files changed, 66 insertions, 0 deletions
diff --git a/devtools/shared/tests/xpcshell/head_devtools.js b/devtools/shared/tests/xpcshell/head_devtools.js
new file mode 100644
index 0000000000..cee2218a2a
--- /dev/null
+++ b/devtools/shared/tests/xpcshell/head_devtools.js
@@ -0,0 +1,66 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* exported DevToolsUtils, DevToolsLoader */
+
+"use strict";
+
+const { require, DevToolsLoader } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/Loader.sys.mjs"
+);
+const DevToolsUtils = require("resource://devtools/shared/DevToolsUtils.js");
+
+Services.prefs.setBoolPref("devtools.testing", true);
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("devtools.testing");
+});
+
+// Register a console listener, so console messages don't just disappear
+// into the ether.
+
+// If for whatever reason the test needs to post console errors that aren't
+// failures, set this to true.
+var ALLOW_CONSOLE_ERRORS = false;
+
+// XXX This listener is broken, see bug 1456634, for now turn off no-undef here,
+// this needs turning back on!
+/* eslint-disable no-undef */
+var listener = {
+  observe(message) {
+    let string;
+    try {
+      message.QueryInterface(Ci.nsIScriptError);
+      dump(
+        message.sourceName +
+          ":" +
+          message.lineNumber +
+          ": " +
+          scriptErrorFlagsToKind(message.flags) +
+          ": " +
+          message.errorMessage +
+          "\n"
+      );
+      string = message.errorMessage;
+    } catch (ex) {
+      // Be a little paranoid with message, as the whole goal here is to lose
+      // no information.
+      try {
+        string = "" + message.message;
+      } catch (e) {
+        string = "<error converting error message to string>";
+      }
+    }
+
+    // Make sure we exit all nested event loops so that the test can finish.
+    while (DevToolsServer.xpcInspector.eventLoopNestLevel > 0) {
+      DevToolsServer.xpcInspector.exitNestedEventLoop();
+    }
+
+    if (!ALLOW_CONSOLE_ERRORS) {
+      do_throw("head_devtools.js got console message: " + string + "\n");
+    }
+  },
+};
+/* eslint-enable no-undef */
+
+Services.console.registerListener(listener);