diff --git a/tests/Typography/TextBlockTest.php b/tests/Typography/TextBlockTest.php
index a97f95a0..6f95d212 100644
--- a/tests/Typography/TextBlockTest.php
+++ b/tests/Typography/TextBlockTest.php
@@ -3,8 +3,11 @@
 namespace Intervention\Image\Tests\Typography;
 
 use Intervention\Image\Geometry\Point;
+use Intervention\Image\Geometry\Polygon;
+use Intervention\Image\Interfaces\FontInterface;
 use Intervention\Image\Tests\TestCase;
 use Intervention\Image\Typography\TextBlock;
+use Mockery;
 
 class TextBlockTest extends TestCase
 {
@@ -37,4 +40,40 @@ class TextBlockTest extends TestCase
         $this->assertEquals('FooBar', $block->getLine(1));
         $this->assertEquals('bar', $block->getLine(2));
     }
+
+    public function testLongestLine(): void
+    {
+        $block = $this->getTestBlock();
+        $result = $block->longestLine();
+        $this->assertEquals('FooBar', (string) $result);
+    }
+
+    public function testGetBoundingBox(): void
+    {
+        $block = $this->getTestBlock();
+        $font = Mockery::mock(FontInterface::class)
+                ->shouldAllowMockingProtectedMethods()
+                ->makePartial();
+
+        $font->shouldReceive('getBoxSize')->andReturn(
+            new Polygon([
+                new Point(0, 0),
+                new Point(300, 0),
+                new Point(300, 150),
+                new Point(0, 150),
+            ])
+        );
+
+        $font->shouldReceive('leadingInPixels')->andReturn(30);
+        $font->shouldReceive('getAlign')->andReturn('left');
+        $font->shouldReceive('getValign')->andReturn('bottom');
+        $font->shouldReceive('getAngle')->andReturn(0);
+        $font->shouldReceive('capHeight')->andReturn(22);
+
+        $box = $block->getBoundingBox($font, new Point(10, 15));
+        $this->assertEquals(300, $box->width());
+        $this->assertEquals(82, $box->height());
+        $this->assertEquals(10, $box->getPivotPoint()->getX());
+        $this->assertEquals(15, $box->getPivotPoint()->getY());
+    }
 }