test of method getJsonRawBody() when body is empty

tests/unit/Http/Request/GetJsonRawBodyCest.php

@@ -61,4 +61,28 @@ public function httpRequestGetJsonRawBody(UnitTester $I)
 
         stream_wrapper_restore('php');
     }
+
+    public function httpRequestGetJsonRawBodyWhenBodyIsEmpty(UnitTester $I)
+    {
+        $I->wantToTest('Http\Request - getJsonRawBody() when Body is Empty');
+
+        $request = new Request();
+
+        stream_wrapper_unregister('php');
+        stream_wrapper_register('php', PhpStream::class);
+
+        $input = json_encode(new \stdClass());
+
+        file_put_contents('php://input', $input);
+
+        $expected = json_decode($input);
+        $actual = $request->getJsonRawBody();
+
+        $I->assertEquals($expected, $actual);
+
+        //and not null
+        $I->assertNotNull($actual);
+
+        stream_wrapper_restore('php');
+    }
 }