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  <?php
namespace Drupal\Tests\Core\Extension;
use Drupal\Component\Version\Constraint;
use Drupal\Core\Extension\Dependency;
use Drupal\Tests\UnitTestCase;
class DependencyTest extends UnitTestCase {
  
  public function testCreateFromString($string, $expected_name, $expected_project, $expected_constraint) {
    $dependency = Dependency::createFromString($string);
    $this
      ->assertSame($expected_name, $dependency
      ->getName());
    $this
      ->assertSame($expected_project, $dependency
      ->getProject());
    $this
      ->assertSame($expected_constraint, $dependency
      ->getConstraintString());
  }
  
  public function providerCreateFromString() {
    $tests = [];
    $tests['module_name_only'] = [
      'views',
      'views',
      '',
      '',
    ];
    $tests['module_and_project_names'] = [
      'drupal:views',
      'views',
      'drupal',
      '',
    ];
    $tests['module_and_constraint'] = [
      'views (<8.x-3.1)',
      'views',
      '',
      '<8.x-3.1',
    ];
    $tests['module_and_project_names_and_constraint'] = [
      'drupal:views (>8.x-1.1)',
      'views',
      'drupal',
      '>8.x-1.1',
    ];
    return $tests;
  }
  
  public function testIsCompatible() {
    $dependency = new Dependency('paragraphs_demo', 'paragraphs', '>8.x-1.1');
    $this
      ->assertFalse($dependency
      ->isCompatible('1.1'));
    $this
      ->assertTrue($dependency
      ->isCompatible('1.2'));
  }
  
  public function testSerialization() {
    $dependency = new Dependency('paragraphs_demo', 'paragraphs', '>8.x-1.1');
    $this
      ->assertTrue($dependency
      ->isCompatible('1.2'));
    $reflected_constraint = (new \ReflectionObject($dependency))
      ->getProperty('constraint');
    $reflected_constraint
      ->setAccessible(TRUE);
    $constraint = $reflected_constraint
      ->getValue($dependency);
    $this
      ->assertInstanceOf(Constraint::class, $constraint);
    $dependency = unserialize(serialize($dependency));
    $reflected_constraint = (new \ReflectionObject($dependency))
      ->getProperty('constraint');
    $reflected_constraint
      ->setAccessible(TRUE);
    $constraint = $reflected_constraint
      ->getValue($dependency);
    $this
      ->assertNull($constraint);
    $this
      ->assertTrue($dependency
      ->isCompatible('1.2'));
    $constraint = $reflected_constraint
      ->getValue($dependency);
    $this
      ->assertInstanceOf(Constraint::class, $constraint);
  }
}