diff --git a/tests/Drivers/Gd/CoreTest.php b/tests/Drivers/Gd/CoreTest.php
new file mode 100644
index 00000000..25f07842
--- /dev/null
+++ b/tests/Drivers/Gd/CoreTest.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Intervention\Image\Tests\Drivers\Gd;
+
+use GdImage;
+use Intervention\Image\Drivers\Gd\Core;
+use Intervention\Image\Drivers\Gd\Frame;
+use Intervention\Image\Tests\TestCase;
+
+class CoreTest extends TestCase
+{
+    public function testNative(): void
+    {
+        $core = new Core([
+            new Frame(imagecreatetruecolor(3, 2))
+        ]);
+        $this->assertInstanceOf(GdImage::class, $core->native());
+    }
+
+    public function testSetNative(): void
+    {
+        $gd1 = imagecreatetruecolor(3, 2);
+        $gd2 = imagecreatetruecolor(3, 2);
+        $core = new Core([new Frame($gd1)]);
+        $this->assertEquals($gd1, $core->native());
+        $core->setNative($gd2);
+        $this->assertEquals($gd2, $core->native());
+    }
+
+    public function testFrame(): void
+    {
+        $core = new Core([
+            new Frame(imagecreatetruecolor(3, 2)),
+            new Frame(imagecreatetruecolor(3, 2)),
+        ]);
+        $this->assertInstanceOf(Frame::class, $core->frame(0));
+        $this->assertInstanceOf(Frame::class, $core->frame(1));
+    }
+
+    public function testSetGetLoops(): void
+    {
+        $core = new Core([
+            new Frame(imagecreatetruecolor(3, 2))
+        ]);
+
+        $this->assertEquals(0, $core->loops());
+        $result = $core->setLoops(12);
+        $this->assertInstanceOf(Core::class, $result);
+        $this->assertEquals(12, $core->loops());
+    }
+}
diff --git a/tests/Drivers/Imagick/CoreTest.php b/tests/Drivers/Imagick/CoreTest.php
new file mode 100644
index 00000000..8ea2101b
--- /dev/null
+++ b/tests/Drivers/Imagick/CoreTest.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace Intervention\Image\Tests\Drivers\Imagick;
+
+use Imagick;
+use ImagickPixel;
+use Intervention\Image\Drivers\Imagick\Core;
+use Intervention\Image\Drivers\Imagick\Frame;
+use Intervention\Image\Tests\TestCase;
+
+class CoreTest extends TestCase
+{
+    public function testConstructor(): void
+    {
+        $imagick = new Imagick();
+        $core = new Core($imagick);
+        $this->assertInstanceOf(Core::class, $core);
+    }
+
+    public function testCount(): void
+    {
+        $imagick = new Imagick();
+        $imagick->newImage(100, 100, new ImagickPixel('red'));
+        $imagick->addImage(clone $imagick);
+        $core = new Core($imagick);
+        $this->assertEquals(2, $core->count());
+    }
+
+    public function testIterator(): void
+    {
+        $imagick = new Imagick();
+        $imagick->newImage(100, 100, new ImagickPixel('red'));
+        $imagick->addImage(clone $imagick);
+        $core = new Core($imagick);
+        foreach ($core as $frame) {
+            $this->assertInstanceOf(Frame::class, $frame);
+        }
+    }
+
+    public function testNative(): void
+    {
+        $imagick = new Imagick();
+        $imagick->newImage(100, 100, new ImagickPixel('red'));
+        $core = new Core($imagick);
+        $this->assertInstanceOf(Imagick::class, $core->native());
+    }
+
+    public function testSetGetLoops(): void
+    {
+        $imagick = new Imagick();
+        $imagick->newImage(100, 100, new ImagickPixel('red'));
+        $core = new Core($imagick);
+        $this->assertEquals(0, $core->loops());
+        $result = $core->setLoops(12);
+        $this->assertEquals(12, $core->loops());
+        $this->assertInstanceOf(Core::class, $result);
+    }
+}