diff --git a/tests/files/WrongFile.mp4 b/tests/files/WrongFile.mp4
new file mode 100644
index 0000000..17e5e5f
Binary files /dev/null and b/tests/files/WrongFile.mp4 differ
diff --git a/tests/src/FFMpeg/FFMpegTest.php b/tests/src/FFMpeg/FFMpegTest.php
index 1920add..42d53a7 100644
--- a/tests/src/FFMpeg/FFMpegTest.php
+++ b/tests/src/FFMpeg/FFMpegTest.php
@@ -10,28 +10,80 @@ class FFMpegTest extends \PHPUnit_Framework_TestCase
      */
     protected $object;
 
+    /**
+     * @var FFProbe
+     */
+    protected $probe;
+
+    public function setUp()
+    {
+        $this->object = FFMpeg::load();
+        $this->probe = FFProbe::load();
+    }
+
+    /**
+     * @covers FFMpeg\FFMpeg::open
+     * @expectedException \InvalidArgumentException
+     */
+    public function testOpenInvalid()
+    {
+        $this->object->open(__DIR__ . '/invalid.files');
+    }
+
     /**
      * @covers FFMpeg\FFMpeg::open
-     * @todo Implement testOpen().
      */
     public function testOpen()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $this->object->open(__DIR__ . '/../../files/Test.ogv');
     }
 
     /**
      * @covers FFMpeg\FFMpeg::extractImage
-     * @todo Implement testExtractImage().
      */
     public function testExtractImage()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $dest = __DIR__ . '/../../files/extract_Test.jpg';
+
+        $this->object->open(__DIR__ . '/../../files/Test.ogv');
+        $this->object->extractImage(2, $dest, 200, 200);
+
+        $this->probe->probeFormat($dest);
+
+        unlink($dest);
+    }
+
+
+    /**
+     * @covers FFMpeg\FFMpeg::extractImage
+     * @expectedException \RuntimeException
+     */
+    public function testExtractImageNoMovie()
+    {
+        $this->object->extractImage(2, 'Path', 200, 200);
+    }
+
+    /**
+     * @covers FFMpeg\FFMpeg::encode
+     * @expectedException \RuntimeException
+     */
+    public function testEncode()
+    {
+        $this->object->encode(new Format\WebM(32, 32), './invalid.file');
+    }
+
+    /**
+     * @covers FFMpeg\FFMpeg::encode
+     * @expectedException \RuntimeException
+     */
+    public function testWrongBinary()
+    {
+        $logger = new \Monolog\Logger('test');
+        $logger->pushHandler(new \Monolog\Handler\NullHandler());
+
+        $ffmpeg = new FFMpeg('wrongbinary', $logger);
+        $ffmpeg->open(__DIR__ . '/../../files/Test.ogv');
+        $ffmpeg->encode(new Format\WebM(32, 32), './invalid.file');
     }
 
     /**
@@ -39,15 +91,12 @@ class FFMpegTest extends \PHPUnit_Framework_TestCase
      */
     public function testEncodeWebm()
     {
-        $ffprobe = FFProbe::load();
-
         $dest = __DIR__ . '/../../files/encode_test.webm';
 
-        $ffmpeg = FFMpeg::load(new \Monolog\Logger('test'));
-        $ffmpeg->open(__DIR__ . '/../../files/Test.ogv');
-        $ffmpeg->encode(new Format\WebM(32, 32), $dest);
+        $this->object->open(__DIR__ . '/../../files/Test.ogv');
+        $this->object->encode(new Format\WebM(32, 32), $dest);
 
-        $ffprobe->probeFormat($dest);
+        $this->probe->probeFormat($dest);
 
         unlink($dest);
     }
@@ -57,15 +106,12 @@ class FFMpegTest extends \PHPUnit_Framework_TestCase
      */
     public function testEncodeOgg()
     {
-        $ffprobe = FFProbe::load();
-
         $dest = __DIR__ . '/../../files/encode_test.ogv';
 
-        $ffmpeg = FFMpeg::load(new \Monolog\Logger('test'));
-        $ffmpeg->open(__DIR__ . '/../../files/Test.ogv');
-        $ffmpeg->encode(new Format\Ogg(32, 32), $dest);
+        $this->object->open(__DIR__ . '/../../files/Test.ogv');
+        $this->object->encode(new Format\Ogg(32, 32), $dest);
 
-        $ffprobe->probeFormat($dest);
+        $this->probe->probeFormat($dest);
 
         unlink($dest);
     }
@@ -75,16 +121,12 @@ class FFMpegTest extends \PHPUnit_Framework_TestCase
      */
     public function testEncodeX264()
     {
-
-        $ffprobe = FFProbe::load();
-
         $dest = __DIR__ . '/../../files/encode_test.mp4';
 
-        $ffmpeg = FFMpeg::load(new \Monolog\Logger('test'));
-        $ffmpeg->open(__DIR__ . '/../../files/Test.ogv');
-        $ffmpeg->encode(new Format\X264(32, 32), $dest);
+        $this->object->open(__DIR__ . '/../../files/Test.ogv');
+        $this->object->encode(new Format\X264(32, 32), $dest);
 
-        $ffprobe->probeFormat($dest);
+        $this->probe->probeFormat($dest);
 
         unlink($dest);
     }
diff --git a/tests/src/FFMpeg/FFProbeTest.php b/tests/src/FFMpeg/FFProbeTest.php
index 617f182..76e4d42 100644
--- a/tests/src/FFMpeg/FFProbeTest.php
+++ b/tests/src/FFMpeg/FFProbeTest.php
@@ -6,63 +6,65 @@ class FFProbeTest extends \PHPUnit_Framework_TestCase
 {
 
     /**
-     * @covers FFMpeg\FFProbe::probeFormat
-     * @todo Implement testProbeFormat().
+     *
+     * @var FFProbe
      */
-    public function testProbeFormat()
+    protected $object;
+
+    public function setUp()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $this->object = FFProbe::load();
+    }
+
+    /**
+     * @covers FFMpeg\FFProbe::probeFormat
+     * @covers FFMpeg\FFProbe::probeStreams
+     * @covers FFMpeg\FFProbe::executeProbe
+     */
+    public function testProbe()
+    {
+        $this->object->probeFormat(__DIR__ . '/../../files/Test.ogv');
+        $this->object->probeStreams(__DIR__ . '/../../files/Test.ogv');
+    }
+
+    /**
+     * @covers FFMpeg\FFProbe::probeFormat
+     * @covers FFMpeg\FFProbe::executeProbe
+     * @expectedException \RuntimeException
+     */
+    public function testProbeInvalidFile()
+    {
+        $this->object->probeFormat(__DIR__ . '/../../files/WrongFile.mp4');
     }
 
     /**
      * @covers FFMpeg\FFProbe::probeStreams
-     * @todo Implement testProbeStreams().
+     * @covers FFMpeg\FFProbe::executeProbe
+     * @expectedException \RuntimeException
      */
-    public function testProbeStreams()
+    public function testProbeStreamsInvalidFile()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $this->object->probeStreams(__DIR__ . '/../../files/WrongFile.mp4');
     }
 
     /**
-     * @covers FFMpeg\FFProbe::probeFrames
-     * @todo Implement testProbeFrames().
+     * @covers FFMpeg\FFProbe::probeStreams
+     * @covers FFMpeg\FFProbe::executeProbe
+     * @expectedException \InvalidArgumentException
      */
-    public function testProbeFrames()
+    public function testProbeStreamsInvalidPathFile()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $this->object->probeStreams(__DIR__ . '/../../files/unknown.file');
     }
 
     /**
-     * @covers FFMpeg\FFProbe::probePackets
-     * @todo Implement testProbePackets().
+     * @covers FFMpeg\FFProbe::probeFormat
+     * @covers FFMpeg\FFProbe::executeProbe
+     * @expectedException \InvalidArgumentException
      */
-    public function testProbePackets()
+    public function testProbeFormatInvalidPathFile()
     {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
-    }
-
-    /**
-     * @covers FFMpeg\FFProbe::probeErrors
-     * @todo Implement testProbeErrors().
-     */
-    public function testProbeErrors()
-    {
-        // Remove the following lines when you implement this test.
-        $this->markTestIncomplete(
-          'This test has not been implemented yet.'
-        );
+        $this->object->probeFormat(__DIR__ . '/../../files/unknown.file');
     }
 
 }