diff -r 000000000000 -r 6474c204b198 browser/devtools/scratchpad/test/browser_scratchpad_confirm_close.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/scratchpad/test/browser_scratchpad_confirm_close.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,228 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* Bug 653427 */
+
+let tempScope = {};
+Cu.import("resource://gre/modules/NetUtil.jsm", tempScope);
+Cu.import("resource://gre/modules/FileUtils.jsm", tempScope);
+let NetUtil = tempScope.NetUtil;
+let FileUtils = tempScope.FileUtils;
+
+// only finish() when correct number of tests are done
+const expected = 9;
+var count = 0;
+function done()
+{
+  if (++count == expected) {
+    cleanup();
+    finish();
+  }
+}
+
+var gFile;
+
+var oldPrompt = Services.prompt;
+var promptButton = -1;
+
+function test()
+{
+  waitForExplicitFinish();
+
+  gFile = createTempFile("fileForBug653427.tmp");
+  writeFile(gFile, "text", testUnsaved.call(this));
+
+  Services.prompt = {
+    confirmEx: function() {
+      return promptButton;
+    }
+  };
+
+  testNew();
+  testSavedFile();
+
+  gBrowser.selectedTab = gBrowser.addTab();
+  content.location = "data:text/html,<p>test scratchpad save file prompt on closing";
+}
+
+function testNew()
+{
+  openScratchpad(function(win) {
+    win.Scratchpad.close(function() {
+      ok(win.closed, "new scratchpad window should close without prompting")
+      done();
+    });
+  }, {noFocus: true});
+}
+
+function testSavedFile()
+{
+  openScratchpad(function(win) {
+    win.Scratchpad.filename = "test.js";
+    win.Scratchpad.editor.dirty = false;
+    win.Scratchpad.close(function() {
+      ok(win.closed, "scratchpad from file with no changes should close")
+      done();
+    });
+  }, {noFocus: true});
+}
+
+function testUnsaved()
+{
+  function setFilename(aScratchpad, aFile) {
+    aScratchpad.setFilename(aFile);
+  }
+
+  testUnsavedFileCancel(setFilename);
+  testUnsavedFileSave(setFilename);
+  testUnsavedFileDontSave(setFilename);
+  testCancelAfterLoad();
+
+  function mockSaveFile(aScratchpad) {
+    let SaveFileStub = function (aCallback) {
+      /*
+       * An argument for aCallback must pass Components.isSuccessCode
+       *
+       * A version of isSuccessCode in JavaScript:
+       *  function isSuccessCode(returnCode) {
+       *    return (returnCode & 0x80000000) == 0;
+       *  }
+       */
+      aCallback(1);
+    };
+
+    aScratchpad.saveFile = SaveFileStub;
+  }
+
+  // Run these tests again but this time without setting a filename to
+  // test that Scratchpad always asks for confirmation on dirty editor.
+  testUnsavedFileCancel(mockSaveFile);
+  testUnsavedFileSave(mockSaveFile);
+  testUnsavedFileDontSave();
+}
+
+function testUnsavedFileCancel(aCallback=function () {})
+{
+  openScratchpad(function(win) {
+    aCallback(win.Scratchpad, "test.js");
+    win.Scratchpad.editor.dirty = true;
+
+    promptButton = win.BUTTON_POSITION_CANCEL;
+
+    win.Scratchpad.close(function() {
+      ok(!win.closed, "cancelling dialog shouldn't close scratchpad");
+      win.close();
+      done();
+    });
+  }, {noFocus: true});
+}
+
+// Test a regression where our confirmation dialog wasn't appearing
+// after openFile calls. See bug 801982.
+function testCancelAfterLoad()
+{
+  openScratchpad(function(win) {
+    win.Scratchpad.setRecentFile(gFile);
+    win.Scratchpad.openFile(0);
+    win.Scratchpad.editor.dirty = true;
+    promptButton = win.BUTTON_POSITION_CANCEL;
+
+    let EventStub = {
+      called: false,
+      preventDefault: function() {
+        EventStub.called = true;
+      }
+    };
+
+    win.Scratchpad.onClose(EventStub, function() {
+      ok(!win.closed, "cancelling dialog shouldn't close scratchpad");
+      ok(EventStub.called, "aEvent.preventDefault was called");
+
+      win.Scratchpad.editor.dirty = false;
+      win.close();
+      done();
+    });
+  }, {noFocus: true});
+}
+
+function testUnsavedFileSave(aCallback=function () {})
+{
+  openScratchpad(function(win) {
+    win.Scratchpad.importFromFile(gFile, true, function(status, content) {
+      aCallback(win.Scratchpad, gFile.path);
+
+      let text = "new text";
+      win.Scratchpad.setText(text);
+
+      promptButton = win.BUTTON_POSITION_SAVE;
+
+      win.Scratchpad.close(function() {
+        ok(win.closed, 'pressing "Save" in dialog should close scratchpad');
+        readFile(gFile, function(savedContent) {
+          is(savedContent, text, 'prompted "Save" worked when closing scratchpad');
+          done();
+        });
+      });
+    });
+  }, {noFocus: true});
+}
+
+function testUnsavedFileDontSave(aCallback=function () {})
+{
+  openScratchpad(function(win) {
+    aCallback(win.Scratchpad, gFile.path);
+    win.Scratchpad.editor.dirty = true;
+
+    promptButton = win.BUTTON_POSITION_DONT_SAVE;
+
+    win.Scratchpad.close(function() {
+      ok(win.closed, 'pressing "Don\'t Save" in dialog should close scratchpad');
+      done();
+    });
+  }, {noFocus: true});
+}
+
+function cleanup()
+{
+  Services.prompt = oldPrompt;
+  gFile.remove(false);
+  gFile = null;
+}
+
+function createTempFile(name)
+{
+  let file = FileUtils.getFile("TmpD", [name]);
+  file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
+  file.QueryInterface(Ci.nsILocalFile)
+  return file;
+}
+
+function writeFile(file, content, callback)
+{
+  let fout = Cc["@mozilla.org/network/file-output-stream;1"].
+             createInstance(Ci.nsIFileOutputStream);
+  fout.init(file.QueryInterface(Ci.nsILocalFile), 0x02 | 0x08 | 0x20,
+            0644, fout.DEFER_OPEN);
+
+  let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
+                  createInstance(Ci.nsIScriptableUnicodeConverter);
+  converter.charset = "UTF-8";
+  let fileContentStream = converter.convertToInputStream(content);
+
+  NetUtil.asyncCopy(fileContentStream, fout, callback);
+}
+
+function readFile(file, callback)
+{
+  let channel = NetUtil.newChannel(file);
+  channel.contentType = "application/javascript";
+
+  NetUtil.asyncFetch(channel, function(inputStream, status) {
+    ok(Components.isSuccessCode(status),
+       "file was read successfully");
+
+    let content = NetUtil.readInputStreamToString(inputStream,
+                                                  inputStream.available());
+    callback(content);
+  });
+}