class UuidTest

class UuidTest extends TestCase {
    
    /**
     * Tests generating valid UUIDs.
     *
     * @dataProvider providerUuidInstances
     */
    public function testGenerateUuid(UuidInterface $instance) {
        $this->assertTrue(Uuid::isValid($instance->generate()), sprintf('UUID generation for %s works.', get_class($instance)));
    }
    
    /**
     * Tests that generated UUIDs are unique.
     *
     * @dataProvider providerUuidInstances
     */
    public function testUuidIsUnique(UuidInterface $instance) {
        $this->assertNotEquals($instance->generate(), $instance->generate(), sprintf('Same UUID was not generated twice with %s.', get_class($instance)));
    }
    
    /**
     * Data provider for UUID instance tests.
     *
     * @return array
     */
    public function providerUuidInstances() {
        $instances = [];
        $instances[][] = new Php();
        // If valid PECL extensions exists add to list.
        if (function_exists('uuid_create') && !function_exists('uuid_make')) {
            $instances[][] = new Pecl();
        }
        // If we are on Windows add the com implementation as well.
        if (function_exists('com_create_guid')) {
            $instances[][] = new Com();
        }
        return $instances;
    }
    
    /**
     * Tests UUID validation.
     *
     * @param string $uuid
     *   The uuid to check against.
     * @param bool $is_valid
     *   Whether the uuid is valid or not.
     * @param string $message
     *   The message to display on failure.
     *
     * @dataProvider providerTestValidation
     */
    public function testValidation($uuid, $is_valid, $message) {
        $this->assertSame($is_valid, Uuid::isValid($uuid), $message);
    }
    
    /**
     * Data provider for UUID instance tests.
     *
     * @return array
     *   An array of arrays containing
     *   - The Uuid to check against.
     *   - (bool) Whether or not the Uuid is valid.
     *   - Failure message.
     */
    public function providerTestValidation() {
        return [
            // These valid UUIDs.
[
                '6ba7b810-9dad-11d1-80b4-00c04fd430c8',
                TRUE,
                'Basic FQDN UUID did not validate',
            ],
            [
                '00000000-0000-0000-0000-000000000000',
                TRUE,
                'Minimum UUID did not validate',
            ],
            [
                'ffffffff-ffff-ffff-ffff-ffffffffffff',
                TRUE,
                'Maximum UUID did not validate',
            ],
            // These are invalid UUIDs.
[
                '0ab26e6b-f074-4e44-9da-601205fa0e976',
                FALSE,
                'Invalid format was validated',
            ],
            [
                '0ab26e6b-f074-4e44-9daf-1205fa0e9761f',
                FALSE,
                'Invalid length was validated',
            ],
        ];
    }

}