Comparator example

use PHPUnit\Framework\TestCase;
use Symfony\Component\Finder\Comparator\Comparator;

class ComparatorTest extends TestCase
{
    public function testInvalidOperator()
    {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('Invalid operator "foo".');

        new Comparator('some target', 'foo');
    }

    /** * @dataProvider provideMatches */
    public function testTestSucceeds(string $operator, string $target, string $testedValue)
    {
        $c = new Comparator($target, $operator);

        $this->assertSame($target, $c->getTarget());
        $this->assertSame($operator, $c->getOperator());

        

private function createSchemaManager(): AbstractSchemaManager
    {
        return method_exists($this->driverConnection, 'createSchemaManager')
            ? $this->driverConnection->createSchemaManager()
            : $this->driverConnection->getSchemaManager();
    }

    private function createComparator(AbstractSchemaManager $schemaManager): Comparator
    {
        return method_exists($schemaManager, 'createComparator')
            ? $schemaManager->createComparator()
            : new Comparator();
    }

    private function compareSchemas(Comparator $comparator, Schema $from, Schema $to): SchemaDiff
    {
        return method_exists($comparator, 'compareSchemas') || method_exists($comparator, 'doCompareSchemas')
            ? $comparator->compareSchemas($from, $to)
            : $comparator->compare($from, $to);
    }
}