Convert simple CPU tests to xUnit

src/Ryujinx.Tests/Cpu/Arm64CodeGenCommonTests.cs

@@ -1,5 +1,5 @@
 using ARMeilleure.CodeGen.Arm64;
-using NUnit.Framework;
+using Xunit;
 
 namespace Ryujinx.Tests.Cpu
 {
@@ -14,7 +14,7 @@ namespace Ryujinx.Tests.Cpu
             public int ImmR;
         }
 
-        public static readonly TestCase[] TestCases =
+        private static readonly TestCase[] _testCases =
         {
             new() { Value = 0, Valid = false, ImmN = 0, ImmS = 0, ImmR = 0 },
             new() { Value = 0x970977f35f848714, Valid = false, ImmN = 0, ImmS = 0, ImmR = 0 },
@@ -32,15 +32,18 @@ namespace Ryujinx.Tests.Cpu
             new() { Value = 0x000000000ffff800, Valid = true, ImmN = 1, ImmS = 0x10, ImmR = 53 },
         };
 
-        [Test]
-        public void BitImmTests([ValueSource(nameof(TestCases))] TestCase test)
+        public static readonly EnumerableTheoryData<TestCase> TestData = new(_testCases);
+
+        [Theory]
+        [MemberData(nameof(TestData))]
+        public void BitImmTests(TestCase test)
         {
             bool valid = CodeGenCommon.TryEncodeBitMask(test.Value, out int immN, out int immS, out int immR);
 
-            Assert.That(valid, Is.EqualTo(test.Valid));
-            Assert.That(immN, Is.EqualTo(test.ImmN));
-            Assert.That(immS, Is.EqualTo(test.ImmS));
-            Assert.That(immR, Is.EqualTo(test.ImmR));
+            Assert.Equal(test.Valid, valid);
+            Assert.Equal(test.ImmN, immN);
+            Assert.Equal(test.ImmS, immS);
+            Assert.Equal(test.ImmR, immR);
         }
     }
 }

src/Ryujinx.Tests/Cpu/EnvironmentTests.cs

@@ -1,14 +1,14 @@
 using ARMeilleure.Translation;
-using NUnit.Framework;
 using Ryujinx.Cpu.Jit;
 using Ryujinx.Tests.Memory;
 using System;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using Xunit;
 
 namespace Ryujinx.Tests.Cpu
 {
-    internal class EnvironmentTests
+    public class EnvironmentTests
     {
 #pragma warning disable IDE0052 // Remove unread private member
         private static Translator _translator;
@@ -36,14 +36,14 @@ namespace Ryujinx.Tests.Cpu
         /// This test ensures that managed methods do not reset floating point control flags.
         /// This is used to avoid changing control flags when running methods that don't require it, such as SVC calls, software memory...
         /// </summary>
-        [Test]
+        [Fact]
         public void FpFlagsPInvoke()
         {
             EnsureTranslator();
 
             // Subnormal results are not flushed to zero by default.
             // This operation should not be allowed to do constant propagation, hence the methods that explicitly disallow inlining.
-            Assert.AreNotEqual(GetDenormal() + GetZero(), 0f);
+            Assert.NotEqual(0f, GetDenormal() + GetZero());
 
             bool methodCalled = false;
             bool isFz = false;
@@ -56,7 +56,7 @@ namespace Ryujinx.Tests.Cpu
             int result = method(Marshal.GetFunctionPointerForDelegate(ManagedMethod));
 
             // Subnormal results are not flushed to zero by default, which we should have returned to exiting the method.
-            Assert.AreNotEqual(GetDenormal() + GetZero(), 0f);
+            Assert.NotEqual(0f, GetDenormal() + GetZero());
 
             Assert.True(result == 0);
             Assert.True(methodCalled);