diff --git a/src/test/java/test/OTPTest.java b/src/test/java/test/OTPTest.java
index cbbdf18..59a1c1b 100644
--- a/src/test/java/test/OTPTest.java
+++ b/src/test/java/test/OTPTest.java
@@ -108,6 +108,13 @@ public class OTPTest {
 			OTP testOTP1 = OTP.createNewOTP(OTPType.HOTP, secret, OTPAlgorithm.MD5, 12, 0, 1, true);
 			assertDoesNotThrow(() -> testOTP1.getPin());
 			
+			OTP testOTP2 = OTP.createNewOTP(OTPType.TOTP, secret, OTPAlgorithm.MD5, 12, 0, 1, true);
+			for(int i = 0; i < 1000; i++) {
+				assertDoesNotThrow(() -> testOTP2.getPin());
+				testOTP2.incrementCounter();
+			}
+			
+			
 			//OTP testOTP2 = OTP.createNewOTP(OTPType.HOTP, Base32.encode(hexStr2Bytes(secret)), OTPAlgorithm.MD5, 12, 0, 1, true);
 			//assertDoesNotThrow(() -> testOTP2.getPin());
 		});