Implement deterministic simulation spine

tests/SideScrollerGame.Sim.Tests/SimulationConfigTests.cs

@@ -0,0 +1,19 @@
+using SideScrollerGame.Sim.Verification;
+
+namespace SideScrollerGame.Sim.Tests;
+
+public sealed class SimulationConfigTests
+{
+    [Fact]
+    public void Default_UsesRepositoryDefaults()
+    {
+        Assert.Equal(SimulationDefaults.DefaultTicksPerSecond, SimulationConfig.Default.TicksPerSecond);
+        Assert.Equal(VerificationMode.None, SimulationConfig.Default.VerificationMode);
+    }
+
+    [Fact]
+    public void Constructor_RejectsNonPositiveTicksPerSecond()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() => new SimulationConfig(0, VerificationMode.None));
+    }
+}