diff --git a/tests/Unit/Drivers/Gd/FontProcessorTest.php b/tests/Unit/Drivers/Gd/FontProcessorTest.php
index a5bcaa47..977146b5 100644
--- a/tests/Unit/Drivers/Gd/FontProcessorTest.php
+++ b/tests/Unit/Drivers/Gd/FontProcessorTest.php
@@ -58,6 +58,15 @@ final class FontProcessorTest extends BaseTestCase
         $this->assertEquals(16, $size->height());
     }
 
+    public function testBoxSizeTtf(): void
+    {
+        $processor = new FontProcessor();
+        $size = $processor->boxSize('ABC', new Font($this->getTestResourcePath('test.ttf')));
+        $this->assertInstanceOf(SizeInterface::class, $size);
+        $this->assertEquals(17, $size->width());
+        $this->assertEquals(4, $size->height());
+    }
+
     public function testNativeFontSize(): void
     {
         $processor = new FontProcessor();
@@ -92,4 +101,44 @@ final class FontProcessorTest extends BaseTestCase
         $result = $processor->leading(new Font());
         $this->assertEquals(8, $result);
     }
+
+    public function testNativeFontSizeTtf(): void
+    {
+        $processor = new FontProcessor();
+        $size = $processor->nativeFontSize($this->testFont());
+        $this->assertEquals(9.12, $size);
+    }
+
+    public function testTextBlockTtf(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->textBlock('test', $this->testFont(), new Point(0, 0));
+        $this->assertInstanceOf(TextBlock::class, $result);
+    }
+
+    public function testTypographicalSizeTtf(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->typographicalSize($this->testFont());
+        $this->assertEquals(10, $result);
+    }
+
+    public function testCapHeightTtf(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->capHeight($this->testFont());
+        $this->assertEquals(10, $result);
+    }
+
+    public function testLeadingTtf(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->leading($this->testFont());
+        $this->assertEquals(10, $result);
+    }
+
+    private function testFont(): Font
+    {
+        return new Font($this->getTestResourcePath('test.ttf'));
+    }
 }
diff --git a/tests/Unit/Drivers/Imagick/FontProcessorTest.php b/tests/Unit/Drivers/Imagick/FontProcessorTest.php
index 7feb5c90..063dc973 100644
--- a/tests/Unit/Drivers/Imagick/FontProcessorTest.php
+++ b/tests/Unit/Drivers/Imagick/FontProcessorTest.php
@@ -5,11 +5,23 @@ declare(strict_types=1);
 namespace Intervention\Image\Tests\Unit\Drivers\Imagick;
 
 use Intervention\Image\Drivers\Imagick\FontProcessor;
+use Intervention\Image\Geometry\Point;
+use Intervention\Image\Interfaces\SizeInterface;
 use Intervention\Image\Tests\BaseTestCase;
 use Intervention\Image\Typography\Font;
+use Intervention\Image\Typography\TextBlock;
 
 final class FontProcessorTest extends BaseTestCase
 {
+    public function testBoxSizeTtf(): void
+    {
+        $processor = new FontProcessor();
+        $size = $processor->boxSize('ABC', $this->testFont());
+        $this->assertInstanceOf(SizeInterface::class, $size);
+        $this->assertEquals(16, $size->width());
+        $this->assertEquals(7, $size->height());
+    }
+
     public function testNativeFontSize(): void
     {
         $processor = new FontProcessor();
@@ -18,4 +30,41 @@ final class FontProcessorTest extends BaseTestCase
         $size = $processor->nativeFontSize($font);
         $this->assertEquals(14.2, $size);
     }
+
+    public function testTextBlock(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->textBlock(
+            'test',
+            $this->testFont(),
+            new Point(0, 0),
+        );
+        $this->assertInstanceOf(TextBlock::class, $result);
+    }
+
+    public function testTypographicalSize(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->typographicalSize($this->testFont());
+        $this->assertEquals(7, $result);
+    }
+
+    public function testCapHeight(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->capHeight($this->testFont());
+        $this->assertEquals(7, $result);
+    }
+
+    public function testLeading(): void
+    {
+        $processor = new FontProcessor();
+        $result = $processor->leading($this->testFont());
+        $this->assertEquals(9, $result);
+    }
+
+    private function testFont(): Font
+    {
+        return new Font($this->getTestResourcePath('test.ttf'));
+    }
 }
diff --git a/tests/resources/test.ttf b/tests/resources/test.ttf
new file mode 100644
index 00000000..330e9198
Binary files /dev/null and b/tests/resources/test.ttf differ