import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/client/framework/test/browser_toolbox_zoom.js

@@ -0,0 +1,67 @@
+/* -*- 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/ */
+
+"use strict";
+
+var toolbox;
+
+const {LocalizationHelper} = require("devtools/shared/l10n");
+const L10N = new LocalizationHelper("devtools/client/locales/toolbox.properties");
+
+function test() {
+  addTab("about:blank").then(openToolbox);
+}
+
+function openToolbox() {
+  let target = TargetFactory.forTab(gBrowser.selectedTab);
+
+  gDevTools.showToolbox(target).then((aToolbox) => {
+    toolbox = aToolbox;
+    toolbox.selectTool("styleeditor").then(testZoom);
+  });
+}
+
+function testZoom() {
+  info("testing zoom keys");
+
+  testZoomLevel("In", 2, 1.2);
+  testZoomLevel("Out", 3, 0.9);
+  testZoomLevel("Reset", 1, 1);
+
+  tidyUp();
+}
+
+function testZoomLevel(type, times, expected) {
+  sendZoomKey("toolbox.zoom" + type + ".key", times);
+
+  let zoom = getCurrentZoom(toolbox);
+  is(zoom.toFixed(2), expected, "zoom level correct after zoom " + type);
+
+  let savedZoom = parseFloat(Services.prefs.getCharPref(
+    "devtools.toolbox.zoomValue"));
+  is(savedZoom.toFixed(2), expected,
+     "saved zoom level is correct after zoom " + type);
+}
+
+function sendZoomKey(shortcut, times) {
+  for (let i = 0; i < times; i++) {
+    synthesizeKeyShortcut(L10N.getStr(shortcut));
+  }
+}
+
+function getCurrentZoom() {
+  let windowUtils = toolbox.win.QueryInterface(Ci.nsIInterfaceRequestor)
+    .getInterface(Ci.nsIDOMWindowUtils);
+  return windowUtils.fullZoom;
+}
+
+function tidyUp() {
+  toolbox.destroy().then(function () {
+    gBrowser.removeCurrentTab();
+
+    toolbox = null;
+    finish();
+  });
+}