Initial commit.

PerfectNumbers.Core.Tests/GpuKernelPoolTests.cs

@@ -0,0 +1,39 @@
+using FluentAssertions;
+using PerfectNumbers.Core.Gpu;
+using Xunit;
+
+namespace PerfectNumbers.Core.Tests;
+
+[Collection("GpuNtt")]
+public class GpuKernelPoolTests
+{
+    [Fact]
+    [Trait("Category", "Fast")]
+    public void EnsureSmallCyclesOnDevice_returns_same_view_on_subsequent_calls()
+    {
+        using var lease = GpuContextPool.RentPreferred(preferCpu: true);
+        var accelerator = lease.Accelerator;
+
+        var first = GpuKernelPool.EnsureSmallCyclesOnDevice(accelerator);
+        var second = GpuKernelPool.EnsureSmallCyclesOnDevice(accelerator);
+
+        second.Equals(first).Should().BeTrue();
+        second.Length.Should().Be(MersenneDivisorCycles.SmallDivisorsMax + 1);
+    }
+
+    [Fact]
+    [Trait("Category", "Fast")]
+    public void Run_provides_accelerator_and_stream()
+    {
+        bool executed = false;
+
+        GpuKernelPool.Run((acc, stream) =>
+        {
+            acc.Should().NotBeNull();
+            stream.Should().NotBeNull();
+            executed = true;
+        });
+
+        executed.Should().BeTrue();
+    }
+}