Initial commit

PetsAndFleas/DateTimeProvider.cs

@@ -0,0 +1,19 @@
+namespace PetsAndFleas;
+
+/// <summary>
+///     Provides the current time
+/// </summary>
+public sealed class DateTimeProvider
+{
+    private DateTime? _overriddenDateTime;
+
+    /// <summary>
+    ///     Gets the current time.
+    ///     Can be set to a specific value which will then be returned in the future.
+    /// </summary>
+    public DateTime Now
+    {
+        get => _overriddenDateTime ?? DateTime.Now;
+        set => _overriddenDateTime = value;
+    }
+}