1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/client/framework/test/browser_toolbox_zoom.js b/devtools/client/framework/test/browser_toolbox_zoom.js
new file mode 100644
index 0000000000..3f328d87a8
--- /dev/null
+++ b/devtools/client/framework/test/browser_toolbox_zoom.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { LocalizationHelper } = require("resource://devtools/shared/l10n.js");
+const { Toolbox } = require("resource://devtools/client/framework/toolbox.js");
+const L10N = new LocalizationHelper(
+  "devtools/client/locales/toolbox.properties"
+);
+
+add_task(async function () {
+  registerCleanupFunction(function () {
+    Services.prefs.clearUserPref("devtools.toolbox.zoomValue");
+  });
+
+  // This test assume that zoom value will be default value. i.e. x1.0.
+  Services.prefs.setCharPref("devtools.toolbox.zoomValue", "1.0");
+  await addTab("about:blank");
+  const toolbox = await gDevTools.showToolboxForTab(gBrowser.selectedTab, {
+    toolId: "styleeditor",
+    hostType: Toolbox.HostType.BOTTOM,
+  });
+
+  info("testing zoom keys");
+
+  testZoomLevel("In", 2, 1.2, toolbox);
+  testZoomLevel("Out", 3, 0.9, toolbox);
+  testZoomLevel("Reset", 1, 1, toolbox);
+
+  await toolbox.destroy();
+  gBrowser.removeCurrentTab();
+});
+
+function testZoomLevel(type, times, expected, toolbox) {
+  sendZoomKey("toolbox.zoom" + type + ".key", times);
+
+  const zoom = getCurrentZoom(toolbox);
+  is(
+    zoom.toFixed(1),
+    expected.toFixed(1),
+    "zoom level correct after zoom " + type
+  );
+
+  const savedZoom = parseFloat(
+    Services.prefs.getCharPref("devtools.toolbox.zoomValue")
+  );
+  is(
+    savedZoom.toFixed(1),
+    expected.toFixed(1),
+    "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(toolbox) {
+  return toolbox.win.browsingContext.fullZoom;
+}