test_assertions.py 文件源码

def test_screenshot_matches__raises_when_images_are_different_sizes(selenium, tmpdir):
    setup_selenium_session(selenium, tmpdir)

    screenshot_matches(selenium, 'testing-size')

    selenium.set_window_size(1200, 900)
    selenium.get('./tests/fixtures/page1-changed.html')
    selenium.find_element_by_tag_name('body').text.index("It has a second paragraph.")

    with pytest.raises(exceptions.ScreenshotMismatch):
        assert screenshot_matches(selenium, 'testing-size')

    captured_path = os.path.join(settings['PDIFF_PATH'], 'testing-size.captured.png')
    pdiff_path = os.path.join(settings['PDIFF_PATH'], 'testing-size.diff.png')

    assert os.path.exists(captured_path)
    assert os.path.exists(pdiff_path) is False