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<?php
use Jasny\Router\Middleware\ErrorHandler;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;
class ErrorHandlerTest extends PHPUnit_Framework_TestCase
{
/**
* Test invoke with invalid 'next' param
*/
public function testInvokeInvalidNext()
{
$middleware = new ErrorHandler();
list($request, $response) = $this->getRequests();
$this->expectException(\InvalidArgumentException::class);
$result = $middleware($request, $response, 'not_callable');
}
/**
* Test that exception in 'next' callback is caught
*/
public function testInvokeCatchError()
{
$middleware = new ErrorHandler();
list($request, $response) = $this->getRequests();
$this->expectCatchError($response);
$result = $middleware($request, $response, function($request, $response) {
throw new Exception('Test exception');
});
$this->assertEquals(get_class($response), get_class($result), "Middleware should return response object");
}
/**
* Test case when there is no error
*/
public function testInvokeNoError()
{
$middleware = new ErrorHandler();
list($request, $response) = $this->getRequests();
$result = $middleware($request, $response, function($request, $response) {
$response->nextCalled = true;
return $response;
});
$this->assertEquals(get_class($response), get_class($result), "Middleware should return response object");
$this->assertTrue($result->nextCalled, "'next' was not called");
}
/**
* Get requests for testing
*
* @return array
*/
public function getRequests()
{
$request = $this->createMock(ServerRequestInterface::class);
$response = $this->createMock(ResponseInterface::class);
return [$request, $response];
}
/**
* Expect for error
*
* @param ResponseInterface $response
*/
public function expectCatchError($response)
{
$stream = $this->createMock(StreamInterface::class);
$stream->expects($this->once())->method('rewind');
$stream->expects($this->once())->method('write')->with($this->equalTo('Unexpected error'));
$response->method('getBody')->will($this->returnValue($stream));
$response->expects($this->once())->method('withBody')->with($this->equalTo($stream))->will($this->returnSelf());
$response->expects($this->once())->method('withStatus')->with($this->equalTo(500), $this->equalTo('Internal Server Error'))->will($this->returnSelf());
}
}
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