public function DiffEngineTest::testDiffInfiniteLoop in Drupal 9

Same name and namespace in other branches

1. 8 core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php \Drupal\Tests\Component\Diff\Engine\DiffEngineTest::testDiffInfiniteLoop()
2. 10 core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php \Drupal\Tests\Component\Diff\Engine\DiffEngineTest::testDiffInfiniteLoop()

Tests that two files can be successfully diffed.

@covers ::diff

File

core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php, line 94

Class

DiffEngineTest

Test DiffEngine class.

Namespace

Drupal\Tests\Component\Diff\Engine

Code

public function testDiffInfiniteLoop() {
  $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: 3mjM9p-kQ8syzH7N8T0L9OnCJDSPvHAZoi3q6jcXJKM',
  ]));
  $this
    ->assertEquals($diff[3], new DiffOpCopy([
    'fallback_image_style: max_325x325',
    '',
  ]));
}