1 files changed, 87 insertions, 0 deletions
diff --git a/TwoStepsAuthenticator.UnitTests/TimeAuthenticatorTests.cs b/TwoStepsAuthenticator.UnitTests/TimeAuthenticatorTests.cs
new file mode 100644
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+++ b/TwoStepsAuthenticator.UnitTests/TimeAuthenticatorTests.cs
@@ -0,0 +1,87 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NUnit.Framework;
+
+namespace TwoStepsAuthenticator.UnitTests
+{
+
+    [TestFixture]
+    public class TimeAuthenticatorTests
+    {
+        private MockUsedCodesManager mockUsedCodesManager { get; set; }
+
+        [SetUp]
+        public void SetUp()
+        {
+            this.mockUsedCodesManager = new MockUsedCodesManager();
+        }
+
+        [Test]
+        public void CreateKey()
+        {
+            var authenticator = new TimeAuthenticator(mockUsedCodesManager);
+            var secret = Authenticator.GenerateKey();
+            var code = authenticator.GetCode(secret);
+
+            Assert.IsTrue(authenticator.CheckCode(secret, code), "Generated Code doesn't verify");
+        }
+
+        [Test]
+        public void Uses_usedCodesManager()
+        {
+            var date = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+            var authenticator = new TimeAuthenticator(mockUsedCodesManager, () => date);
+            var secret = Authenticator.GenerateKey();
+            var code = authenticator.GetCode(secret);
+
+            authenticator.CheckCode(secret, code);
+
+            Assert.AreEqual(mockUsedCodesManager.LastChallenge, 0uL);
+            Assert.AreEqual(mockUsedCodesManager.LastCode, code);
+        }
+
+        [Test]
+        public void Prevent_code_reuse() {
+            var date = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+            var usedCodesManager = new UsedCodesManager();
+            var authenticator = new TimeAuthenticator(() => date, usedCodeManager: usedCodesManager);
+            var secret = Authenticator.GenerateKey();
+            var code = authenticator.GetCode(secret);
+
+            Assert.IsTrue(authenticator.CheckCode(secret, code));
+            Assert.IsFalse(authenticator.CheckCode(secret, code));
+        }
+
+        // Test Vectors from http://tools.ietf.org/html/rfc6238#appendix-B have all length 8. We want a length of 6.
+        // This Test Vectors are from a Ruby implementation. They work with the Google Authentificator app.
+        [TestCase("DRMK64PPMMC7TDZF", "2013-12-04 18:33:01 +0100", "661188")]
+        [TestCase("EQOGSM3XZUH6SE2Y", "2013-12-04 18:34:56 +0100", "256804")]
+        [TestCase("4VU7EQACVDMFJSBG", "2013-12-04 18:36:16 +0100", "800872")]
+        public void VerifyKeys(string secret, string timeString, string code)
+        {
+            var date = DateTime.Parse(timeString);
+
+            var authenticator = new TimeAuthenticator(mockUsedCodesManager, () => date);
+            Assert.IsTrue(authenticator.CheckCode(secret, code));
+
+        }
+
+        [Test]
+        public void VerifyUsedTime()
+        {
+            var date = DateTime.Parse("2013-12-05 17:23:50 +0100");
+            var authenticator = new TimeAuthenticator(mockUsedCodesManager, () => date);
+
+            DateTime usedTime;
+
+            Assert.True(authenticator.CheckCode("H22Q7WAMQYFZOJ2Q", "696227", out usedTime));
+
+            // 17:23:50 - 30s
+            Assert.AreEqual(usedTime.Hour, 17);
+            Assert.AreEqual(usedTime.Minute, 23);
+            Assert.AreEqual(usedTime.Second, 20);
+        }
+    }
+}