function DiffEngineTest::testDiffInfiniteLoop

Tests that two files can be successfully diffed.

@covers ::diff

File

core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php, line 119

Class

DiffEngineTest

Test DiffEngine class.

Namespace

Code

public function testDiffInfiniteLoop() : void {
    $this->expectDeprecation('Drupal\\Component\\Diff\\Engine\\DiffEngine is deprecated in drupal:10.1.0 and is removed from drupal:11.0.0. Use sebastianbergmann/diff instead. See https://www.drupal.org/node/3337942');
    $from = explode("\n", file_get_contents(__DIR__ . '/fixtures/file1.txt'));
    $to = explode("\n", file_get_contents(__DIR__ . '/fixtures/file2.txt'));
    $diff_engine = new DiffEngine();
    $diff = $diff_engine->diff($from, $to);
    $this->assertCount(4, $diff);
    $this->assertEquals($diff[0], new DiffOpDelete([
        '    - image.style.max_650x650',
    ]));
    $this->assertEquals($diff[1], new DiffOpCopy([
        '    - image.style.max_325x325',
    ]));
    $this->assertEquals($diff[2], new DiffOpAdd([
        '    - image.style.max_650x650',
        '_core:',
        '  default_config_hash: random_hash_string_here',
    ]));
    $this->assertEquals($diff[3], new DiffOpCopy([
        'fallback_image_style: max_325x325',
        '',
    ]));
}