public function DiffEngineTest::testDiff 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::testDiff()

Tests whether op classes returned by DiffEngine::diff() match expectations.

@covers ::diff @dataProvider provideTestDiff

File

core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php, line 78

Class

DiffEngineTest

Test DiffEngine class.

Namespace

Drupal\Tests\Component\Diff\Engine

Code

public function testDiff($expected, $from, $to) {
  $diff_engine = new DiffEngine();
  $diff = $diff_engine
    ->diff($from, $to);

  // Make sure we have the same number of results as expected.
  $this
    ->assertSameSize($expected, $diff);

  // Make sure the diff objects match our expectations.
  foreach ($expected as $index => $op_class) {
    $this
      ->assertEquals($op_class, get_class($diff[$index]));
  }
}