1 files changed, 42 insertions, 0 deletions
diff --git a/TwoStepsAuthenticator.UnitTests/CounterAuthenticatorTests.cs b/TwoStepsAuthenticator.UnitTests/CounterAuthenticatorTests.cs
new file mode 100644
index 0000000..ebe7493
--- /dev/null
+++ b/TwoStepsAuthenticator.UnitTests/CounterAuthenticatorTests.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NUnit.Framework;
+
+namespace TwoStepsAuthenticator.UnitTests {
+
+    [TestFixture]
+    public class CounterAuthenticatorTests {
+
+        [Test]
+        public void CreateKey() {
+            var authenticator = new CounterAuthenticator();
+            var secret = authenticator.GenerateKey();
+            var code = authenticator.GetCode(secret, 0L);
+
+            Assert.IsTrue(authenticator.CheckCode(secret, code, 0L), "Generated Code doesn't verify");
+        }
+
+        // Test Values from http://www.ietf.org/rfc/rfc4226.txt - Appendix D
+        [TestCase("12345678901234567890", 0L, "755224")]
+        [TestCase("12345678901234567890", 1L, "287082")]
+        [TestCase("12345678901234567890", 2L, "359152")]
+        [TestCase("12345678901234567890", 3L, "969429")]
+        [TestCase("12345678901234567890", 4L, "338314")]
+        [TestCase("12345678901234567890", 5L, "254676")]
+        [TestCase("12345678901234567890", 6L, "287922")]
+        [TestCase("12345678901234567890", 7L, "162583")]
+        [TestCase("12345678901234567890", 8L, "399871")]
+        [TestCase("12345678901234567890", 9L, "520489")]
+        public void VerifyKeys(string secret, long counter, string code) {
+            var authenticator = new CounterAuthenticator();
+            var base32Secret = Base32Encoding.ToString(Encoding.ASCII.GetBytes(secret));
+
+            Assert.IsTrue(authenticator.CheckCode(base32Secret, code, counter));
+
+        }
+
+    }
+}