ServerRequest provides proper defaults and throws exception for bad parsed body

src/Message/ServerRequest.php

@@ -11,14 +11,14 @@ class ServerRequest extends Request implements ServerRequestInterface
     private $attributes;
     /** @var array */
     private $cookieParams;
-    /** @var array */
-    private $uploadedFiles;
+    /** @var mixed */
+    private $parsedBody;
     /** @var array */
     private $queryParams;
     /** @var array */
     private $serverParams;
-    /** @var mixed */
-    private $parsedBody;
+    /** @var array */
+    private $uploadedFiles;
 
     // ------------------------------------------------------------------------
 
@@ -26,6 +26,9 @@ class ServerRequest extends Request implements ServerRequestInterface
     {
         parent::__construct();
         $this->attributes = [];
+        $this->cookieParams = [];
+        $this->queryParams = [];
+        $this->serverParams = [];
         $this->uploadedFiles = [];
     }
 
@@ -224,6 +227,10 @@ class ServerRequest extends Request implements ServerRequestInterface
      */
     public function withParsedBody($data)
     {
+        if (!(is_null($data) || is_array($data) || is_object($data))) {
+            throw new \InvalidArgumentException("Parsed body must be null, array, or object.");
+        }
+
         $request = clone $this;
         $request->parsedBody = $data;
         return $request;

test/tests/unit/Message/ServerRequestTest.php

@@ -161,6 +161,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Server Params
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getServerParams
+     */
+    public function testServerParamsIsEmptyByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertEquals([], $request->getServerParams());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getServerParams
      * @depends testGetServerRequestReadsFromRequest
@@ -174,6 +183,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Cookies
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getCookieParams
+     */
+    public function testCookieParamsIsEmptyByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertEquals([], $request->getCookieParams());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getCookieParams
      * @depends testGetServerRequestReadsFromRequest
@@ -201,6 +219,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Query
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getQueryParams
+     */
+    public function testQueryParamsIsEmptyByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertEquals([], $request->getQueryParams());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getQueryParams
      * @depends testGetServerRequestReadsFromRequest
@@ -228,6 +255,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Uploaded Files
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getUploadedFiles
+     */
+    public function testUploadedFilesIsEmptyByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertEquals([], $request->getUploadedFiles());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getUploadedFiles
      * @preserveGlobalState disabled
@@ -384,6 +420,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Parsed Body
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getParsedBody
+     */
+    public function testParsedBodyIsNullByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertNull($request->getParsedBody());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getServerRequest
      * @covers WellRESTed\Message\ServerRequest::getParsedBody
@@ -431,6 +476,25 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals("Clyde", $body2["guinea_pig"]);
     }
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::withParsedBody
+     * @expectedException \InvalidArgumentException
+     * @dataProvider invalidParsedBodyProvider
+     */
+    public function testWithParsedBodyThrowsExceptionWithInvalidType($body)
+    {
+        $request = new ServerRequest();
+        $request->withParsedBody($body);
+    }
+
+    public function invalidParsedBodyProvider()
+    {
+        return [
+            [false],
+            [1]
+        ];
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::__clone
      */
@@ -450,6 +514,15 @@ class ServerRequestTest extends \PHPUnit_Framework_TestCase
     // ------------------------------------------------------------------------
     // Attributes
 
+    /**
+     * @covers WellRESTed\Message\ServerRequest::getAttributes
+     */
+    public function testAttributesIsEmptyByDefault()
+    {
+        $request = new ServerRequest();
+        $this->assertEquals([], $request->getAttributes());
+    }
+
     /**
      * @covers WellRESTed\Message\ServerRequest::getAttribute
      * @depends testGetServerRequestReadsFromRequest