Add tests

Author: stringerbell

src/App/Validator/ValidateBody.php

@@ -14,6 +14,7 @@ public function __invoke(ServerRequestInterface $request, ResponseInterface $res
         if (!$body) {
             throw new InvalidArgumentException("Invalid Body");
         }
+
         return $next($request, $response);
     }
 }

test/AppTest/Validator/ValidateBodyTest.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace AppTest\Validator;
+
+use App\Validator\ValidateBody;
+use Psr\Http\Message\ServerRequestInterface;
+use Zend\Expressive\Container\Exception\InvalidArgumentException;
+use Zend\Stratigility\Http\ResponseInterface;
+
+class ValidateBodyTest extends \PHPUnit_Framework_TestCase
+{
+    private $validateBody;
+
+    public function setUp()
+    {
+        $this->validateBody = new ValidateBody();
+    }
+
+    /**
+     * @test
+     * * @expectedException InvalidArgumentException
+     */
+    public function itWillThrowAnExceptionWhenBodyIsInvalid()
+    {
+        /** @var ServerRequestInterface $request */
+        $request = $this->prophesize(ServerRequestInterface::class);
+        /** @var ResponseInterface $response */
+        $response = $this->prophesize(ResponseInterface::class);
+        $next     = function ($request, $response) {
+            return $response;
+        };
+        $request->getParsedBody()->shouldBeCalled()->willReturn([]);
+        $result   = $this->validateBody->__invoke($request->reveal(), $response->reveal(), $next);
+    }
+
+    /**
+     * @test
+     */
+    public function itWillNotThrowAnExceptionForValidBody()
+    {
+        /** @var ServerRequestInterface $request */
+        $request = $this->prophesize(ServerRequestInterface::class);
+        /** @var ResponseInterface $response */
+        $response = $this->prophesize(ResponseInterface::class);
+        $next     = function ($request, $response) {
+            return $response;
+        };
+        $request->getParsedBody()->shouldBeCalled()->willReturn(["foo" => "bar"]);
+        $result = $this->validateBody->__invoke($request->reveal(), $response->reveal(), $next);
+        $this->assertInstanceOf(ResponseInterface::class, $result);
+    }
+}