diff --git a/tests/Payu/PayuTest.php b/tests/Payu/PayuTest.php
index 1cef813..47a7919 100644
--- a/tests/Payu/PayuTest.php
+++ b/tests/Payu/PayuTest.php
@@ -8,6 +8,7 @@
 use App\Models\Order;
 use Tests\TestCase;
 use Payu\Events\PayuPaymentCreated;
+use Payu\Gateways\PayuPaymentGateway;
 
 /**
  * php artisan --env=testing migrate:fresh --seed
@@ -76,4 +77,80 @@ public function sandbox_payment_url()
 
 		$this->assertTrue(true);
 	}
+
+	/** @test */
+	public function convert_to_cents()
+	{
+		$g = new PayuPaymentGateway();
+
+		// Invalid
+
+		$this->expectException(\Exception::class);
+		$g->toCents('3.59');
+
+		$this->expectException(\Exception::class);
+		$g->toCents(0);
+
+		$this->expectException(\Exception::class);
+		$g->toCents(0.00);
+
+
+		$this->expectException(\Exception::class);
+		$g->toCents(.123);
+
+
+		$this->expectException(\Exception::class);
+		$g->toCents(10.123);
+
+		// Good
+
+		$this->assertTrue($g->toCents(1) == 100);
+		$this->assertTrue($g->toCents(2) == 200);
+		$this->assertTrue($g->toCents(3) == 300);
+		$this->assertTrue($g->toCents(4) == 400);
+		$this->assertTrue($g->toCents(5) == 500);
+
+		$this->assertTrue($g->toCents(.01) == 1);
+		$this->assertTrue($g->toCents(.1) == 10);
+		$this->assertTrue($g->toCents(.10) == 10);
+		$this->assertTrue($g->toCents(.11) == 11);
+		$this->assertTrue($g->toCents(.12) == 12);
+		$this->assertTrue($g->toCents(.13) == 13);
+		$this->assertTrue($g->toCents(.14) == 14);
+		$this->assertTrue($g->toCents(.15) == 15);
+		$this->assertTrue($g->toCents(.16) == 16);
+		$this->assertTrue($g->toCents(.17) == 17);
+		$this->assertTrue($g->toCents(.18) == 18);
+		$this->assertTrue($g->toCents(.19) == 19);
+		$this->assertTrue($g->toCents(.20) == 20);
+		$this->assertTrue($g->toCents(.21) == 21);
+
+		$this->assertTrue($g->toCents(01.10) == 110);
+		$this->assertTrue($g->toCents(01.11) == 111);
+		$this->assertTrue($g->toCents(01.12) == 112);
+		$this->assertTrue($g->toCents(01.13) == 113);
+		$this->assertTrue($g->toCents(01.14) == 114);
+		$this->assertTrue($g->toCents(01.15) == 115);
+		$this->assertTrue($g->toCents(01.16) == 116);
+		$this->assertTrue($g->toCents(01.17) == 117);
+		$this->assertTrue($g->toCents(01.18) == 118);
+		$this->assertTrue($g->toCents(01.19) == 119);
+		$this->assertTrue($g->toCents(01.20) == 120);
+		$this->assertTrue($g->toCents(01.21) == 121);
+
+		$this->assertTrue($g->toCents(10.11) == 1011);
+		$this->assertTrue($g->toCents(10.12) == 1012);
+		$this->assertTrue($g->toCents(10.13) == 1013);
+		$this->assertTrue($g->toCents(10.14) == 1014);
+		$this->assertTrue($g->toCents(10.15) == 1015);
+		$this->assertTrue($g->toCents(10.16) == 1016);
+		$this->assertTrue($g->toCents(10.17) == 1017);
+		$this->assertTrue($g->toCents(10.18) == 1018);
+		$this->assertTrue($g->toCents(10.19) == 1019);
+		$this->assertTrue($g->toCents(10.20) == 1020);
+		$this->assertTrue($g->toCents(10.21) == 1021);
+
+		$this->assertTrue($g->toCents(123.46) == 12346);
+		$this->assertTrue($g->toCents(123.56) == 12356);
+	}
 }