diff --git a/test/acceptance/Stream/StreamWrapper/FopenAcceptanceTest.php b/test/acceptance/Stream/StreamWrapper/FopenAcceptanceTest.php
new file mode 100644
index 0000000..8f3f110
--- /dev/null
+++ b/test/acceptance/Stream/StreamWrapper/FopenAcceptanceTest.php
@@ -0,0 +1,119 @@
+<?php
+namespace Vfs\Stream\StreamWrapper;
+
+use Vfs\Test\AcceptanceTestCase;
+
+class FopenAcceptanceTest extends AcceptanceTestCase
+{
+    protected $tree = [
+        'foo' => [
+            'bar' => 'baz'
+        ]
+    ];
+
+    public function dataFopen()
+    {
+        return [
+            ['a' ], ['r' ], ['w' ], ['c' ],
+            ['ab'], ['rb'], ['wb'], ['cb'],
+            ['a+'], ['r+'], ['w+'], ['c+'],
+            ['at'], ['rt'], ['wt'], ['ct']
+        ];
+    }
+
+    public function dataFopenError()
+    {
+        return [
+            ['x'], ['xb'], ['x+'], ['xt']
+        ];
+    }
+
+    public function dataFopenMissing()
+    {
+        return [
+            ['a' ], ['w' ], ['c' ], ['x' ],
+            ['ab'], ['wb'], ['cb'], ['xb'],
+            ['a+'], ['w+'], ['c+'], ['x+'],
+            ['at'], ['wt'], ['ct'], ['xt']
+        ];
+    }
+
+    public function dataFopenMissingError()
+    {
+        return [
+            ['r'], ['rb'], ['r+'], ['rt']
+        ];
+    }
+
+    /**
+     * @dataProvider dataFopen
+     */
+    public function testFopenFile($mode)
+    {
+        $this->assertTrue(is_resource(fopen("$this->scheme://foo/bar", $mode)));
+    }
+
+    /**
+     * @dataProvider dataFopenError
+     */
+    public function testFopenFileError($mode)
+    {
+        $this->setExpectedException('PHPUnit_Framework_Error_Warning');
+
+        fopen("$this->scheme://foo/bar", $mode);
+    }
+
+    /**
+     * @dataProvider dataFopenMissing
+     */
+    public function testFopenMissingFile($mode)
+    {
+        $this->assertTrue(is_resource(fopen("$this->scheme://foo/baz", $mode)));
+    }
+
+    /**
+     * @dataProvider dataFopenMissingError
+     */
+    public function testFopenMissingFileError($mode)
+    {
+        $this->setExpectedException('PHPUnit_Framework_Error_Warning');
+
+        fopen("$this->scheme://foo/baz", $mode);
+    }
+
+    /**
+     * @dataProvider dataFopen
+     */
+    public function testFopenDirectory($mode)
+    {
+        $this->assertTrue(is_resource(fopen("$this->scheme://foo", $mode)));
+    }
+
+    /**
+     * @dataProvider dataFopenError
+     */
+    public function testFopenDirectoryError($mode)
+    {
+        $this->setExpectedException('PHPUnit_Framework_Error_Warning');
+
+        fopen("$this->scheme://foo", $mode);
+    }
+
+    /**
+     * @dataProvider dataFopenMissing
+     */
+    public function testFopenMissingDirectory($mode)
+    {
+        $this->assertTrue(is_resource(fopen("$this->scheme://baz", $mode)));
+    }
+
+    /**
+     * @dataProvider dataFopenMissingError
+     */
+    public function testFopenMissingDirectoryError($mode)
+    {
+        $this->setExpectedException('PHPUnit_Framework_Error_Warning');
+
+        fopen("$this->scheme://baz", $mode);
+    }
+}
diff --git a/test/acceptance/Stream/StreamWrapper/FreadAcceptanceTest.php b/test/acceptance/Stream/StreamWrapper/FreadAcceptanceTest.php
new file mode 100644
index 0000000..06a4865
--- /dev/null
+++ b/test/acceptance/Stream/StreamWrapper/FreadAcceptanceTest.php
@@ -0,0 +1,83 @@
+<?php
+namespace Vfs\Stream\StreamWrapper;
+
+use Vfs\Test\AcceptanceTestCase;
+
+class FreadAcceptanceTest extends AcceptanceTestCase
+{
+    protected $tree = [
+        'foo' => [
+            'bar' => 'baz'
+        ]
+    ];
+
+    public function dataFreadFile()
+    {
+        $b = 'bar';
+        return [
+            ['a',  $b, 1, '' ], ['a',  $b, 2, ''  ], ['a',  $b, 3, ''   ], ['a',  $b, 4, ''   ],
+            ['r',  $b, 1, 'b'], ['r',  $b, 2, 'ba'], ['r',  $b, 3, 'baz'], ['r',  $b, 4, 'baz'],
+            ['w',  $b, 1, '' ], ['w',  $b, 2, ''  ], ['w',  $b, 3, ''   ], ['w',  $b, 4, ''   ],
+            ['c',  $b, 1, '' ], ['c',  $b, 2, ''  ], ['c',  $b, 3, ''   ], ['c',  $b, 4, ''   ],
+            ['ab', $b, 1, '' ], ['ab', $b, 2, ''  ], ['ab', $b, 3, ''   ], ['ab', $b, 4, ''   ],
+            ['rb', $b, 1, 'b'], ['rb', $b, 2, 'ba'], ['rb', $b, 3, 'baz'], ['rb', $b, 4, 'baz'],
+            ['wb', $b, 1, '' ], ['wb', $b, 2, ''  ], ['wb', $b, 3, ''   ], ['wb', $b, 4, ''   ],
+            ['cb', $b, 1, '' ], ['cb', $b, 2, ''  ], ['cb', $b, 3, ''   ], ['cb', $b, 4, ''   ],
+            ['a+', $b, 1, '' ], ['a+', $b, 2, ''  ], ['a+', $b, 3, ''   ], ['a+', $b, 4, ''   ],
+            ['r+', $b, 1, 'b'], ['r+', $b, 2, 'ba'], ['r+', $b, 3, 'baz'], ['r+', $b, 4, 'baz'],
+            ['w+', $b, 1, '' ], ['w+', $b, 2, ''  ], ['w+', $b, 3, ''   ], ['w+', $b, 4, ''   ],
+            ['c+', $b, 1, 'b'], ['c+', $b, 2, 'ba'], ['c+', $b, 3, 'baz'], ['c+', $b, 4, 'baz'],
+            ['at', $b, 1, '' ], ['at', $b, 2, ''  ], ['at', $b, 3, ''   ], ['at', $b, 4, ''   ],
+            ['rt', $b, 1, 'b'], ['rt', $b, 2, 'ba'], ['rt', $b, 3, 'baz'], ['rt', $b, 4, 'baz'],
+            ['wt', $b, 1, '' ], ['wt', $b, 2, ''  ], ['wt', $b, 3, ''   ], ['wt', $b, 4, ''   ],
+            ['ct', $b, 1, '' ], ['ct', $b, 2, ''  ], ['ct', $b, 3, ''   ], ['ct', $b, 4, ''   ]
+        ];
+    }
+
+    public function dataFreadMissingFile()
+    {
+        $b = 'bar';
+        return [
+            ['a',  ''],
+            ['x',  ''],
+            ['w',  ''],
+            ['c',  ''],
+            ['ab', ''],
+            ['xb', ''],
+            ['wb', ''],
+            ['cb', ''],
+            ['a+', ''],
+            ['x+', ''],
+            ['w+', ''],
+            ['c+', ''],
+            ['at', ''],
+            ['xt', ''],
+            ['wt', ''],
+            ['ct', '']
+        ];
+    }
+
+    /**
+     * @dataProvider dataFreadFile
+     */
+    public function testFreadFile($mode, $content, $size, $expectation)
+    {
+        $resource = fopen("$this->scheme://foo/bar", $mode);
+
+        $this->assertEquals($expectation, fread($resource, $size));
+
+        fclose($resource);
+    }
+
+    /**
+     * @dataProvider dataFreadMissingFile
+     */
+    public function testFreadMissingFile($mode)
+    {
+        $resource = fopen("$this->scheme://bar", $mode);
+
+        $this->assertEquals('', fread($resource, 10));
+
+        fclose($resource);
+    }
+}