function ImageAdminStylesTest::testFlushUserInterface

Tests flush user interface.

File

core/modules/image/tests/src/Functional/ImageAdminStylesTest.php, line 431

Class

ImageAdminStylesTest

Tests creation, deletion, and editing of image styles and effects.

Namespace

Code

public function testFlushUserInterface() : void {
    $admin_path = 'admin/config/media/image-styles';
    // Create a new style.
    $style_name = $this->randomMachineName(10);
    $style = ImageStyle::create([
        'name' => $style_name,
        'label' => $this->randomString(),
    ]);
    $style->save();
    // Create an image to make sure it gets flushed.
    $files = $this->drupalGetTestFiles('image');
    $image_uri = $files[0]->uri;
    $derivative_uri = $style->buildUri($image_uri);
    $this->assertTrue($style->createDerivative($image_uri, $derivative_uri));
    $this->assertEquals(1, $this->getImageCount($style));
    // Go to image styles list page and check if the flush operation link
    // exists.
    $this->drupalGet($admin_path);
    $flush_path = $admin_path . '/manage/' . $style_name . '/flush';
    $this->assertSession()
        ->linkByHrefExists($flush_path);
    // Flush the image style derivatives using the user interface.
    $this->drupalGet($flush_path);
    $this->submitForm([], 'Flush');
    // The derivative image file should have been deleted.
    $this->assertEquals(0, $this->getImageCount($style));
}