| // Copyright 2018 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 "base/base_switches.h" |
| #include "base/command_line.h" |
| #include "base/macros.h" |
| #include "base/run_loop.h" |
| #include "build/build_config.h" |
| #include "chrome/browser/ui/browser.h" |
| #include "chrome/browser/ui/tabs/tab_strip_model.h" |
| #include "chrome/test/base/in_process_browser_test.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace { |
| |
| class RunLoopUntilNonEmptyPaint : public content::WebContentsObserver { |
| public: |
| explicit RunLoopUntilNonEmptyPaint(content::WebContents* web_contents) |
| : content::WebContentsObserver(web_contents) {} |
| |
| ~RunLoopUntilNonEmptyPaint() override = default; |
| |
| // Runs a RunLoop on the main thread until the first non-empty frame is |
| // painted for the WebContents provided to the constructor. |
| void RunUntilNonEmptyPaint() { |
| if (web_contents()->CompletedFirstVisuallyNonEmptyPaint()) |
| return; |
| run_loop_.Run(); |
| } |
| |
| private: |
| // content::WebContentsObserver: |
| void DidFirstVisuallyNonEmptyPaint() override { run_loop_.Quit(); } |
| |
| base::RunLoop run_loop_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RunLoopUntilNonEmptyPaint); |
| }; |
| |
| class NoBackgroundTasksTest : public InProcessBrowserTest { |
| protected: |
| NoBackgroundTasksTest() = default; |
| ~NoBackgroundTasksTest() override = default; |
| |
| private: |
| void SetUpCommandLine(base::CommandLine* command_line) override { |
| command_line->AppendSwitch(switches::kDisableBackgroundTasks); |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(NoBackgroundTasksTest); |
| }; |
| |
| } // namespace |
| |
| // Verify that it is possible to get the first non-empty paint without running |
| // background tasks. |
| // |
| // TODO(fdoray): Enable on ChromeOS once all dependencies on background tasks to |
| // produce the first non-empty paint have been removed. https://crbug.com/831835 |
| // This test is flaky on Mac: https://crbug.com/833989 |
| // TODO(http://crbug.com/876184 Command line is too long for win-asan. |
| #if defined(OS_CHROMEOS) || defined(OS_MACOSX) || \ |
| (defined(OS_WIN) && defined(ADDRESS_SANITIZER)) |
| #define MAYBE_FirstNonEmptyPaintWithoutBackgroundTasks \ |
| DISABLED_FirstNonEmptyPaintWithoutBackgroundTasks |
| #else |
| #define MAYBE_FirstNonEmptyPaintWithoutBackgroundTasks \ |
| FirstNonEmptyPaintWithoutBackgroundTasks |
| #endif |
| IN_PROC_BROWSER_TEST_F(NoBackgroundTasksTest, |
| MAYBE_FirstNonEmptyPaintWithoutBackgroundTasks) { |
| RunLoopUntilNonEmptyPaint run_loop_until_non_empty_paint( |
| browser()->tab_strip_model()->GetActiveWebContents()); |
| run_loop_until_non_empty_paint.RunUntilNonEmptyPaint(); |
| } |