Default zoom was never read from chrome://settings

chrome/browser/browser_commands_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_page_zoom.h"
 #include "chrome/browser/ui/browser_command_controller.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/browser/ui/zoom/chrome_zoom_level_prefs.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/test/bookmark_test_helpers.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
 
@@ skipping 310 matching lines @@
   tab_strip_model->ActivateTabAt(1, true);
   EXPECT_TRUE(tab_strip_model->IsTabSelected(1));
   chrome_page_zoom::Zoom(contents2, content::PAGE_ZOOM_OUT);
 
   zoom_controller = ZoomController::FromWebContents(contents2);
   EXPECT_EQ(zoom_controller->GetZoomPercent(), 90.0f);
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_PLUS));
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_NORMAL));
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_MINUS));
 }
+
+TEST_F(BrowserCommandsTest, OnDefaultZoomLevelChanged) {
+  TabStripModel* tab_strip_model = browser()->tab_strip_model();
+  GURL url("http://code.google.com");
+  AddTab(browser(), url);
+  content::WebContents* contents = tab_strip_model->GetWebContentsAt(0);
+  ZoomController* zoom_controller = ZoomController::FromWebContents(contents);
+
+  // Set the default zoom level to 125.
+  profile()->GetZoomLevelPrefs()->SetDefaultZoomLevelPref(
+        content::ZoomFactorToZoomLevel(1.25));
+  EXPECT_EQ(zoom_controller->GetZoomPercent(), 125);

[sky, 2014/11/24 15:46:57]

Format for assertions in tests is 'expected, actual.' I think you have it
backwards throughout this test.

+
+  // Actual Size from context menu should be disabled now.
+  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_PLUS));
+  EXPECT_FALSE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_NORMAL));
+  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_MINUS));
+
+  // Change the zoom level.
+  chrome_page_zoom::Zoom(contents, content::PAGE_ZOOM_IN);
+
+  EXPECT_EQ(zoom_controller->GetZoomPercent(), 150);
+
+  // Tab no longer at default zoom hence Actual size should be enabled.
+  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_PLUS));
+  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_NORMAL));
+  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_ZOOM_MINUS));
+}
+