1 files changed, 89 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg_progress-listener-bug.js b/devtools/client/debugger/test/mochitest/browser_dbg_progress-listener-bug.js
new file mode 100644
index 000000000..e5aac615a
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg_progress-listener-bug.js
@@ -0,0 +1,89 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that the debugger does show up even if a progress listener reads the
+ * WebProgress argument's DOMWindow property in onStateChange() (bug 771655).
+ */
+
+var gTab, gPanel, gDebugger;
+var gOldListener;
+
+const TAB_URL = EXAMPLE_URL + "doc_inline-script.html";
+
+function test() {
+  installListener();
+
+  let options = {
+    source: TAB_URL,
+    line: 1
+  };
+  initDebugger(TAB_URL, options).then(([aTab,, aPanel]) => {
+    gTab = aTab;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+
+    is(!!gDebugger.DebuggerController._startup, true,
+      "Controller should be initialized after starting the test.");
+
+    testPause();
+  });
+}
+
+function testPause() {
+  let onCaretUpdated = waitForCaretUpdated(gPanel, 16);
+  callInTab(gTab, "runDebuggerStatement");
+  onCaretUpdated.then(() => {
+    is(gDebugger.gThreadClient.state, "paused",
+      "The debugger statement was reached.");
+
+    resumeDebuggerThenCloseAndFinish(gPanel);
+  });
+}
+
+// This is taken almost verbatim from bug 771655.
+function installListener() {
+  if ("_testPL" in window) {
+    gOldListener = _testPL;
+
+    Cc["@mozilla.org/docloaderservice;1"]
+      .getService(Ci.nsIWebProgress)
+      .removeProgressListener(_testPL);
+  }
+
+  window._testPL = {
+    START_DOC: Ci.nsIWebProgressListener.STATE_START |
+               Ci.nsIWebProgressListener.STATE_IS_DOCUMENT,
+    onStateChange: function (wp, req, stateFlags, status) {
+      if ((stateFlags & this.START_DOC) === this.START_DOC) {
+        // This DOMWindow access triggers the unload event.
+        wp.DOMWindow;
+      }
+    },
+    QueryInterface: function (iid) {
+      if (iid.equals(Ci.nsISupportsWeakReference) ||
+          iid.equals(Ci.nsIWebProgressListener))
+        return this;
+      throw Cr.NS_ERROR_NO_INTERFACE;
+    }
+  };
+
+  Cc["@mozilla.org/docloaderservice;1"]
+    .getService(Ci.nsIWebProgress)
+    .addProgressListener(_testPL, Ci.nsIWebProgress.NOTIFY_STATE_REQUEST);
+}
+
+registerCleanupFunction(function () {
+  if (gOldListener) {
+    window._testPL = gOldListener;
+  } else {
+    delete window._testPL;
+  }
+
+  gTab = null;
+  gPanel = null;
+  gDebugger = null;
+  gOldListener = null;
+});