getBaselineFile example

public function testBaselineGenerationEmptyFile()
    {
        $filename = $this->createFile();
        $configuration = Configuration::fromUrlEncodedString('generateBaseline=true&baselineFile='.urlencode($filename));
        $this->assertTrue($configuration->isGeneratingBaseline());
        $trace = debug_backtrace();
        $this->assertTrue($configuration->isBaselineDeprecation(new Deprecation('Test message 1', $trace, '')));
        $this->assertTrue($configuration->isBaselineDeprecation(new Deprecation('Test message 2', $trace, '')));
        $this->assertTrue($configuration->isBaselineDeprecation(new Deprecation('Test message 1', $trace, '')));
        $configuration->writeBaseline();
        $this->assertEquals($filename, $configuration->getBaselineFile());
        $expected = [
            [
                'location' => 'Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler\ConfigurationTest::runTest',
                'message' => 'Test message 1',
                'count' => 2,
            ],
            [
                'location' => 'Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler\ConfigurationTest::runTest',
                'message' => 'Test message 2',
                'count' => 1,
            ],
        ];