class ExplodeTest

class ExplodeTest extends MigrateProcessTestCase {
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    $configuration = [
      'delimiter' => ',',
    ];
    $this->plugin = new Explode($configuration, 'map', []);
    parent::setUp();
  }
  
  /**
   * Tests explode transform process works.
   */
  public function testTransform() : void {
    $value = $this->plugin
      ->transform('foo,bar,tik', $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame([
      'foo',
      'bar',
      'tik',
    ], $value);
  }
  
  /**
   * Tests explode transform process works with a limit.
   */
  public function testTransformLimit() : void {
    $plugin = new Explode([
      'delimiter' => '_',
      'limit' => 2,
    ], 'map', []);
    $value = $plugin->transform('foo_bar_tik', $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame([
      'foo',
      'bar_tik',
    ], $value);
  }
  
  /**
   * Tests if the explode process can be chained with handles_multiple process.
   */
  public function testChainedTransform() : void {
    $exploded = $this->plugin
      ->transform('One,Two,Three', $this->migrateExecutable, $this->row, 'destination_property');
    $concat = new Concat([], 'map', []);
    $concatenated = $concat->transform($exploded, $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame('OneTwoThree', $concatenated);
  }
  
  /**
   * Tests explode fails properly on non-strings.
   */
  public function testExplodeWithNonString() : void {
    $this->expectException(MigrateException::class);
    $this->expectExceptionMessage('is not a string');
    $this->plugin
      ->transform([
      'foo',
    ], $this->migrateExecutable, $this->row, 'destination_property');
  }
  
  /**
   * Tests that explode works on non-strings but with strict set to FALSE.
   *
   * @dataProvider providerExplodeWithNonStrictAndEmptySource
   */
  public function testExplodeWithNonStrictAndEmptySource($value, $expected) : void {
    $plugin = new Explode([
      'delimiter' => '|',
      'strict' => FALSE,
    ], 'map', []);
    $processed = $plugin->transform($value, $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame($expected, $processed);
  }
  
  /**
   * Data provider for ::testExplodeWithNonStrictAndEmptySource().
   */
  public static function providerExplodeWithNonStrictAndEmptySource() {
    return [
      'normal_string' => [
        'a|b|c',
        [
          'a',
          'b',
          'c',
        ],
      ],
      'integer_cast_to_string' => [
        123,
        [
          '123',
        ],
      ],
      'zero_integer_cast_to_string' => [
        0,
        [
          '0',
        ],
      ],
      'true_cast_to_string' => [
        TRUE,
        [
          '1',
        ],
      ],
      'null_empty_array' => [
        NULL,
        [],
      ],
      'false_empty_array' => [
        FALSE,
        [],
      ],
      'empty_string_empty_array' => [
        '',
        [],
      ],
    ];
  }
  
  /**
   * Tests Explode exception handling when string-cast fails.
   */
  public function testExplodeWithNonStrictAndNonCastable() : void {
    $plugin = new Explode([
      'delimiter' => '|',
      'strict' => FALSE,
    ], 'map', []);
    $this->expectException(MigrateException::class);
    $this->expectExceptionMessage('cannot be casted to a string');
    $processed = $plugin->transform([
      'foo',
    ], $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame([
      'foo',
    ], $processed);
  }
  
  /**
   * Tests Explode return values with an empty string and strict check.
   */
  public function testExplodeWithStrictAndEmptyString() : void {
    $plugin = new Explode([
      'delimiter' => '|',
    ], 'map', []);
    $processed = $plugin->transform('', $this->migrateExecutable, $this->row, 'destination_property');
    $this->assertSame([
      '',
    ], $processed);
  }
  
  /**
   * Tests explode fails with empty delimiter.
   */
  public function testExplodeWithEmptyDelimiter() : void {
    $this->expectException(MigrateException::class);
    $this->expectExceptionMessage('delimiter is empty');
    $plugin = new Explode([
      'delimiter' => '',
    ], 'map', []);
    $plugin->transform('foo,bar', $this->migrateExecutable, $this->row, 'destination_property');
  }

}