Add CulturedConditionalFactAttribute and CulturedConditionalTheoryAttribute to XUnitV3Extensions

src/Microsoft.DotNet.XUnitV3Extensions/src/CulturedConditionalFactAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.DotNet.XUnitExtensions;
+
+namespace Xunit
+{
+    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
+    public sealed class CulturedConditionalFactAttribute : CulturedFactAttribute
+    {
+        [DynamicallyAccessedMembers(StaticReflectionConstants.ConditionalMemberKinds)]
+        public Type CalleeType { get; private set; }
+        public string[] ConditionMemberNames { get; private set; }
+
+        public CulturedConditionalFactAttribute(
+            string[] cultures,
+            [DynamicallyAccessedMembers(StaticReflectionConstants.ConditionalMemberKinds)]
+            Type calleeType,
+            params string[] conditionMemberNames)
+            : base(cultures)
+        {
+            CalleeType = calleeType;
+            ConditionMemberNames = conditionMemberNames;
+            string skipReason = ConditionalTestDiscoverer.EvaluateSkipConditions(calleeType, conditionMemberNames);
+            if (skipReason != null)
+            {
+                Skip = skipReason;
+            }
+        }
+    }
+}

src/Microsoft.DotNet.XUnitV3Extensions/src/CulturedConditionalTheoryAttribute.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.DotNet.XUnitExtensions;
+
+namespace Xunit
+{
+    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
+    public sealed class CulturedConditionalTheoryAttribute : CulturedTheoryAttribute
+    {
+        [DynamicallyAccessedMembers(StaticReflectionConstants.ConditionalMemberKinds)]
+        public Type CalleeType { get; private set; }
+        public string[] ConditionMemberNames { get; private set; }
+
+        public CulturedConditionalTheoryAttribute(
+            string[] cultures,
+            [DynamicallyAccessedMembers(StaticReflectionConstants.ConditionalMemberKinds)]
+            Type calleeType,
+            params string[] conditionMemberNames)
+            : base(cultures)
+        {
+            CalleeType = calleeType;
+            ConditionMemberNames = conditionMemberNames;
+            string skipReason = ConditionalTestDiscoverer.EvaluateSkipConditions(calleeType, conditionMemberNames);
+            if (skipReason != null)
+            {
+                Skip = skipReason;
+            }
+        }
+    }
+}

src/Microsoft.DotNet.XUnitV3Extensions/tests/CulturedConditionalAttributeTests.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Collections.Generic;
+using System.Globalization;
+using System.Reflection;
+using Xunit;
+
+namespace Microsoft.DotNet.XUnitExtensions.Tests
+{
+    public class CulturedConditionalAttributeTests
+    {
+        // These tests validate the xunit v3 cultured conditional attributes without relying on
+        // execution order, which the v3 runner does not guarantee for this scenario.
+
+        private static readonly string[] s_cultures = new[] { "en-US", "fr-FR" };
+
+        public static bool AlwaysTrue => true;
+        public static bool AlwaysFalse => false;
+
+        [CulturedConditionalFact(new[] { "en-US", "fr-FR" }, typeof(CulturedConditionalAttributeTests), nameof(AlwaysTrue))]
+        public void CulturedConditionalFactTrue()
+        {
+            // The current culture must be one of the requested cultures when the test runs.
+            Assert.Contains(CultureInfo.CurrentCulture.Name, s_cultures);
+        }
+
+        [CulturedConditionalFact(new[] { "en-US", "fr-FR" }, typeof(CulturedConditionalAttributeTests), nameof(AlwaysFalse))]
+        public void CulturedConditionalFactFalse()
+        {
+            Assert.Fail("This test should have been skipped.");
+        }
+
+        [CulturedConditionalTheory(new[] { "en-US", "fr-FR" }, typeof(CulturedConditionalAttributeTests), nameof(AlwaysTrue))]
+        [InlineData(1, "one")]
+        [InlineData(2, "two")]
+        public void CulturedConditionalTheoryTrue(int number, string name)
+        {
+            // Verify the arguments were actually passed through and the culture was set.
+            Assert.True(number > 0);
+            Assert.False(string.IsNullOrEmpty(name));
+            Assert.Contains(CultureInfo.CurrentCulture.Name, s_cultures);
+        }
+
+        [CulturedConditionalTheory(new[] { "en-US", "fr-FR" }, typeof(CulturedConditionalAttributeTests), nameof(AlwaysFalse))]
+        [InlineData(1)]
+        [InlineData(2)]
+#pragma warning disable xUnit1026 // Theory methods should use all of their parameters
+        public void CulturedConditionalTheoryFalse(int value)
+#pragma warning restore xUnit1026
+        {
+            Assert.Fail($"This test should have been skipped, but ran with value {value}.");
+        }
+
+        [Fact]
+        public void ValidateCulturedConditionalFactSkipState()
+        {
+            Assert.Null(GetCulturedConditionalFactAttribute(nameof(CulturedConditionalFactTrue)).Skip);
+            Assert.Equal("Condition(s) not met: \"AlwaysFalse\"", GetCulturedConditionalFactAttribute(nameof(CulturedConditionalFactFalse)).Skip);
+        }
+
+        [Fact]
+        public void ValidateCulturedConditionalTheorySkipState()
+        {
+            Assert.Null(GetCulturedConditionalTheoryAttribute(nameof(CulturedConditionalTheoryTrue)).Skip);
+            Assert.Equal("Condition(s) not met: \"AlwaysFalse\"", GetCulturedConditionalTheoryAttribute(nameof(CulturedConditionalTheoryFalse)).Skip);
+        }
+
+        [Fact]
+        public void ValidateCulturedConditionalFactProperties()
+        {
+            CulturedConditionalFactAttribute attribute = GetCulturedConditionalFactAttribute(nameof(CulturedConditionalFactTrue));
+            Assert.Equal(typeof(CulturedConditionalAttributeTests), attribute.CalleeType);
+            Assert.Equal(new[] { nameof(AlwaysTrue) }, attribute.ConditionMemberNames);
+            Assert.Equal(s_cultures, attribute.Cultures);
+        }
+
+        [Fact]
+        public void ValidateCulturedConditionalTheoryProperties()
+        {
+            CulturedConditionalTheoryAttribute attribute = GetCulturedConditionalTheoryAttribute(nameof(CulturedConditionalTheoryTrue));
+            Assert.Equal(typeof(CulturedConditionalAttributeTests), attribute.CalleeType);
+            Assert.Equal(new[] { nameof(AlwaysTrue) }, attribute.ConditionMemberNames);
+            Assert.Equal(s_cultures, attribute.Cultures);
+        }
+
+        private static CulturedConditionalFactAttribute GetCulturedConditionalFactAttribute(string methodName)
+        {
+            return (CulturedConditionalFactAttribute)typeof(CulturedConditionalAttributeTests)
+                .GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public)!
+                .GetCustomAttribute(typeof(CulturedConditionalFactAttribute), inherit: false)!;
+        }
+
+        private static CulturedConditionalTheoryAttribute GetCulturedConditionalTheoryAttribute(string methodName)
+        {
+            return (CulturedConditionalTheoryAttribute)typeof(CulturedConditionalAttributeTests)
+                .GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public)!
+                .GetCustomAttribute(typeof(CulturedConditionalTheoryAttribute), inherit: false)!;
+        }
+    }
+}