class ExplodeTest

class ExplodeTest extends MigrateProcessTestCase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        $configuration = [
            'delimiter' => ',',
        ];
        $this->plugin = new Explode($configuration, 'map', []);
        parent::setUp();
    }
    
    /**
     * Test explode transform process works.
     */
    public function testTransform() {
        $value = $this->plugin
            ->transform('foo,bar,tik', $this->migrateExecutable, $this->row, 'destination_property');
        $this->assertSame([
            'foo',
            'bar',
            'tik',
        ], $value);
    }
    
    /**
     * Test explode transform process works with a limit.
     */
    public function testTransformLimit() {
        $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);
    }
    
    /**
     * Test if the explode process can be chained with a handles_multiple process.
     */
    public function testChainedTransform() {
        $exploded = $this->plugin
            ->transform('foo,bar,tik', $this->migrateExecutable, $this->row, 'destination_property');
        $concat = new Concat([], 'map', []);
        $concatenated = $concat->transform($exploded, $this->migrateExecutable, $this->row, 'destination_property');
        $this->assertSame('foobartik', $concatenated);
    }
    
    /**
     * Test explode fails properly on non-strings.
     */
    public function testExplodeWithNonString() {
        $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) {
        $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 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 that explode raises an exception when the value cannot be casted to
     * string.
     */
    public function testExplodeWithNonStrictAndNonCastable() {
        $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 that explode with an empty string and strict check returns a
     * non-empty array.
     */
    public function testExplodeWithStrictAndEmptyString() {
        $plugin = new Explode([
            'delimiter' => '|',
        ], 'map', []);
        $processed = $plugin->transform('', $this->migrateExecutable, $this->row, 'destination_property');
        $this->assertSame([
            '',
        ], $processed);
    }
    
    /**
     * Test explode fails with empty delimiter.
     */
    public function testExplodeWithEmptyDelimiter() {
        $this->expectException(MigrateException::class);
        $this->expectExceptionMessage('delimiter is empty');
        $plugin = new Explode([
            'delimiter' => '',
        ], 'map', []);
        $plugin->transform('foo,bar', $this->migrateExecutable, $this->row, 'destination_property');
    }

}