|
public static createFromFile ( string $filename ) : |
||
| $filename | string | eg: __DIR__ . '/../../configuration.json' |
| return | an instance of JSON with the data read from the file | |
public static function createFromFile($filename)
{
if (!file_exists($filename)) {
throw new Exception(sprintf('Failed to load json from file %s. The file does not exist', $filename), Exception::BAD_LOADERDATA);
}
//suppres warning with @ operator. we are explicitely testing the return value.
$json = @file_get_contents($filename);
if (false === $json) {
throw new Exception(sprintf('Failed to read json data from file %s. Unknown error (permissions?)', $filename), Exception::BAD_LOADERDATA);
}
return new static($json);
} /**
* @test
*/
public function shouldThrowExceptionForNoMachineData()
{
$machine = new StateMachine(new Context(new Identifier('json-test', 'json-machine')));
$loader = JSON::createFromFile(__DIR__ . '/fixture-no-machines.json');
try {
$loader->load($machine);
$this->fail('should not come here');
} catch (Exception $e) {
$this->assertEquals(Exception::BAD_LOADERDATA, $e->getCode());
$this->assertContains('no machine data', $e->getMessage());
}
}
