Disabled "Print" option in wrench menu for a crashed page.

chrome/browser/ui/browser_unittest.cc

 // Copyright 2013 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/browser/ui/browser.h"
 
 #include "base/macros.h"
+#include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/ui/browser_command_controller.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/browser_with_test_window_test.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/web_contents_tester.h"
 
 using content::SiteInstance;
 using content::WebContents;
 using content::WebContentsTester;
@@ skipping 38 matching lines @@
   contents2->SetIsCrashed(base::TERMINATION_STATUS_PROCESS_CRASHED, -1);
   EXPECT_TRUE(contents2->IsCrashed());
 
   // Selecting the second tab does not cause a load or clear the crash.
   tab_strip_model->ActivateTabAt(1, true);
   EXPECT_TRUE(tab_strip_model->IsTabSelected(1));
   EXPECT_FALSE(contents2->IsLoading());
   EXPECT_TRUE(contents2->IsCrashed());
 }
 
+// Ensure the print command gets disabled when a tab crashes.
+TEST_F(BrowserUnitTest, DisablePrintOnCrashedTab) {
+  TabStripModel* tab_strip_model = browser()->tab_strip_model();
+
+  WebContents* contents = CreateTestWebContents();
+  tab_strip_model->AppendWebContents(contents, true);
+  WebContentsTester::For(contents)->NavigateAndCommit(GURL("about:blank"));
+
+  CommandUpdater* command_updater =
+      browser()->command_controller()->command_updater();
+
+  EXPECT_TRUE(command_updater->IsCommandEnabled(IDC_PRINT));
+  EXPECT_TRUE(chrome::CanPrint(browser()));
+  EXPECT_FALSE(contents->IsCrashed());

[Peter Kasting, 2016/03/31 21:59:05]

Nit: Move the IsCrashed() check to the top of each of these blocks of checks, as
that "determines" the print state and thus we would want to know first if that
changed.

+
+  contents->SetIsCrashed(base::TERMINATION_STATUS_PROCESS_CRASHED, -1);
+
+  EXPECT_FALSE(command_updater->IsCommandEnabled(IDC_PRINT));
+  EXPECT_FALSE(chrome::CanPrint(browser()));
+  EXPECT_TRUE(contents->IsCrashed());
+}
+
 class BrowserBookmarkBarTest : public BrowserWithTestWindowTest {
  public:
   BrowserBookmarkBarTest() {}
   ~BrowserBookmarkBarTest() override {}
 
  protected:
   BookmarkBar::State window_bookmark_bar_state() const {
     return static_cast<BookmarkBarStateTestBrowserWindow*>(
         browser()->window())->bookmark_bar_state();
   }
@@ skipping 86 matching lines @@
   // Activate the 1st tab which is NTP.
   browser()->tab_strip_model()->ActivateTabAt(0, true);
   EXPECT_EQ(BookmarkBar::SHOW, browser()->bookmark_bar_state());
   EXPECT_EQ(BookmarkBar::SHOW, window_bookmark_bar_state());
 
   // Activate the 2nd tab which is non-NTP.
   browser()->tab_strip_model()->ActivateTabAt(1, true);
   EXPECT_EQ(BookmarkBar::SHOW, browser()->bookmark_bar_state());
   EXPECT_EQ(BookmarkBar::SHOW, window_bookmark_bar_state());
 }