public function getReturnsContentOfTheCorrectCacheFile()
{
$mockCache = $this->createMock(AbstractFrontend::class);
$mockCache->expects($this->atLeastOnce())->method('getIdentifier')->will($this->returnValue('UnitTestCache'));
$mockEnvironmentConfiguration = $this->createEnvironmentConfigurationMock([__DIR__ . '~Testing', 'vfs://Foo/', 255]);
$backend = $this->getMockBuilder(FileBackend::class)->setMethods(['setTag'])->disableOriginalConstructor()->getMock();
$this->inject($backend, 'environmentConfiguration', $mockEnvironmentConfiguration);
$backend->setCache($mockCache);
$entryIdentifier = 'BackendFileTest';
$data = 'some data' . microtime();
$backend->set($entryIdentifier, $data, [], 500);
$data = 'some other data' . microtime();
$backend->set($entryIdentifier, $data, [], 100);
$loadedData = $backend->get($entryIdentifier);
$this->assertEquals($data, $loadedData);
}