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<?php |
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namespace JVelasco\CircuitBreaker\Adapters; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\Handler\MockHandler; |
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use GuzzleHttp\Psr7\Request; |
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use GuzzleHttp\Psr7\Response; |
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use JVelasco\CircuitBreaker\CircuitBreaker; |
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use PHPUnit\Framework\TestCase; |
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final class GuzzleMiddlewareTest extends TestCase |
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{ |
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const RESOLVED_SERVICE_NAME = "service_8080"; |
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/** @test */ |
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public function it_delegates_on_next_handler() |
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{ |
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$handlerResponse = new Response(200); |
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$circuitBreaker = $this->prophesize(CircuitBreaker::class); |
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$middleware = new GuzzleMiddleware( |
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$circuitBreaker->reveal(), |
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new MockHandler([$handlerResponse]) |
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); |
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$client = new Client(['handler' => $middleware]); |
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$circuitBreaker->isAvailable(self::RESOLVED_SERVICE_NAME)->willReturn(true); |
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$circuitBreaker->reportSuccess(self::RESOLVED_SERVICE_NAME)->willReturn(null); |
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$this->assertSame( |
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$handlerResponse, |
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$client->send($this->aRequestToAService()), |
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"Delegates on handler" |
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); |
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} |
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/** @test */ |
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public function it_reports_successes() |
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{ |
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$handlerResponse = new Response(200); |
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$circuitBreaker = $this->prophesize(CircuitBreaker::class); |
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$middleware = new GuzzleMiddleware( |
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$circuitBreaker->reveal(), |
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new MockHandler([$handlerResponse]) |
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); |
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$client = new Client(['handler' => $middleware]); |
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$circuitBreaker->isAvailable(self::RESOLVED_SERVICE_NAME)->willReturn(true); |
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$circuitBreaker->reportSuccess(self::RESOLVED_SERVICE_NAME) |
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->shouldBeCalledTimes(1); |
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$client->send($this->aRequestToAService()); |
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} |
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/** @test */ |
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public function it_reports_failed_request() |
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{ |
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$handlerResponse = new Response(500); |
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$circuitBreaker = $this->prophesize(CircuitBreaker::class); |
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$middleware = new GuzzleMiddleware( |
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$circuitBreaker->reveal(), |
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new MockHandler([$handlerResponse]) |
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); |
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$client = new Client(['handler' => $middleware]); |
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$circuitBreaker->isAvailable(self::RESOLVED_SERVICE_NAME)->willReturn(true); |
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$circuitBreaker->reportFailure(self::RESOLVED_SERVICE_NAME) |
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->shouldBeCalledTimes(1); |
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$client->send($this->aRequestToAService()); |
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} |
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/** @test */ |
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public function it_return_server_error_response_when_service_is_not_available() |
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{ |
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$handlerResponse = new Response(200); |
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$circuitBreaker = $this->prophesize(CircuitBreaker::class); |
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$middleware = new GuzzleMiddleware( |
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$circuitBreaker->reveal(), |
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new MockHandler([$handlerResponse]) |
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); |
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$client = new Client(['handler' => $middleware]); |
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$circuitBreaker->isAvailable(self::RESOLVED_SERVICE_NAME)->willReturn(false); |
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$response = $client->send($this->aRequestToAService()); |
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$this->assertEquals(503, $response->getStatusCode()); |
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$this->assertEquals("Circuit for service service_8080 is open", $response->getReasonPhrase()); |
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} |
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private function aRequestToAService(): Request |
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{ |
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return new Request("GET", "http://service:8080/some/path"); |
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} |
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} |
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j-velasco /
php-circuit-breaker
