public function testReadReturnsCache()
{
$file = $this->getFile();
$signature = new Signature(PHP_VERSION, '2.0', true, array('foo', 'bar'));
$cache = new Cache($signature);
file_put_contents($file, $cache->toJson());
$handler = new FileHandler($file);
$cached = $handler->read();
$this->assertInstanceOf('PhpCsFixer\\Cache\\CacheInterface', $cached);
$this->assertTrue($cached->getSignature()->equals($signature));
}
public function read()
{
if (!file_exists($this->file)) {
return;
}
$content = file_get_contents($this->file);
try {
$cache = Cache::fromJson($content);
} catch (\InvalidArgumentException $exception) {
return;
}
return $cache;
}
public function testCanConvertToAndFromJson()
{
$signature = new Signature(PHP_VERSION, '2.0', true, array('foo', 'bar'));
$cache = new Cache($signature);
$file = 'test.php';
$hash = crc32('hello');
$cache->set($file, $hash);
/* @var Cache $cached */
$cached = Cache::fromJson($cache->toJson());
$this->assertTrue($cached->getSignature()->equals($signature));
$this->assertTrue($cached->has($file));
$this->assertSame($hash, $cached->get($file));
}