diff --git a/test/Voice/VoiceObjects/AdvancedMachineDetectionTest.php b/test/Voice/VoiceObjects/AdvancedMachineDetectionTest.php
new file mode 100644
index 00000000..25ad2d4d
--- /dev/null
+++ b/test/Voice/VoiceObjects/AdvancedMachineDetectionTest.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace VonageTest\Voice\VoiceObjects;
+
+use InvalidArgumentException;
+use OutOfBoundsException;
+use PHPUnit\Framework\TestCase;
+use Vonage\Voice\VoiceObjects\AdvancedMachineDetection;
+
+class AdvancedMachineDetectionTest extends TestCase
+{
+    public function testValidConstructor()
+    {
+        $amd = new AdvancedMachineDetection('continue', 60, 'detect');
+        $this->assertInstanceOf(AdvancedMachineDetection::class, $amd);
+    }
+
+    public function testInvalidBehaviour()
+    {
+        $this->expectException(InvalidArgumentException::class);
+        new AdvancedMachineDetection('invalid_behaviour', 60, 'detect');
+    }
+
+    public function testInvalidMode()
+    {
+        $this->expectException(InvalidArgumentException::class);
+        new AdvancedMachineDetection('continue', 60, 'invalid_mode');
+    }
+
+    public function testInvalidBeepTimeout()
+    {
+        $this->expectException(OutOfBoundsException::class);
+        new AdvancedMachineDetection('continue', 150, 'detect');
+    }
+
+    public function testValidBeepTimeoutRange()
+    {
+        $amd = new AdvancedMachineDetection('hangup', 100, 'detect_beep');
+        $this->assertEquals(100, $amd->toArray()['beep_timeout']);
+    }
+
+    public function testWillRenderDefault()
+    {
+        $amd = new AdvancedMachineDetection('hangup', 100, 'default');
+        $this->assertEquals('default', $amd->toArray()['default']);
+    }
+
+    public function testToArray()
+    {
+        $amd = new AdvancedMachineDetection('continue', 45, 'detect');
+        $expected = [
+            'behavior' => 'continue',
+            'mode' => 'detect',
+            'beep_timeout' => 45
+        ];
+
+        $this->assertEquals($expected, $amd->toArray());
+    }
+
+    public function testFromArrayValid()
+    {
+        $data = [
+            'behaviour' => 'hangup',
+            'mode' => 'detect_beep',
+            'beep_timeout' => 60
+        ];
+
+        $amd = (new AdvancedMachineDetection('continue', 45))->fromArray($data);
+        $this->assertEquals('hangup', $amd->toArray()['behavior']);
+        $this->assertEquals('detect_beep', $amd->toArray()['mode']);
+        $this->assertEquals(60, $amd->toArray()['beep_timeout']);
+    }
+
+    public function testFromArrayInvalidData()
+    {
+        $this->expectException(InvalidArgumentException::class);
+
+        $data = [
+            'behaviour' => 'invalid_behaviour',
+            'mode' => 'detect',
+            'beep_timeout' => 60
+        ];
+
+        (new AdvancedMachineDetection('continue', 45))->fromArray($data);
+    }
+}