1 files changed, 43 insertions, 0 deletions
diff --git a/Timeline.Tests/Helpers/TestClock.cs b/Timeline.Tests/Helpers/TestClock.cs
new file mode 100644
index 00000000..de7d0eb7
--- /dev/null
+++ b/Timeline.Tests/Helpers/TestClock.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Timeline.Services;
+
+namespace Timeline.Tests.Helpers
+{
+    public class TestClock : IClock
+    {
+        private DateTime? _currentTime = null;
+
+        public DateTime GetCurrentTime()
+        {
+            return _currentTime ?? DateTime.Now;
+        }
+
+        public void SetCurrentTime(DateTime? mockTime)
+        {
+            _currentTime = mockTime;
+        }
+
+        public DateTime SetMockCurrentTime()
+        {
+            var time = new DateTime(2000, 1, 1, 1, 1, 1);
+            _currentTime = time;
+            return time;
+        }
+
+        public DateTime ForwardCurrentTime()
+        {
+            return ForwardCurrentTime(TimeSpan.FromDays(1));
+        }
+
+        public DateTime ForwardCurrentTime(TimeSpan timeSpan)
+        {
+            if (_currentTime == null)
+                return SetMockCurrentTime();
+            _currentTime.Value.Add(timeSpan);
+            return _currentTime.Value;
+        }
+    }
+}