chore: import upstream snapshot with attribution

2026-07-13 13:21:23 +08:00
commit b957a53def
5423 changed files with 863745 additions and 0 deletions
@@ -0,0 +1,83 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Reflection;
+using System.Text.RegularExpressions;
+using Xunit;
+
+namespace VectorData.ConformanceTests;
+
+/// <summary>
+/// A test that ensures that all base test suites are implemented (or explicitly ignored) in provider implementations.
+/// Used to make sure that test coverage is complete.
+/// </summary>
+public abstract class TestSuiteImplementationTests
+{
+    protected virtual ICollection<Type> IgnoredTestBases { get; } = [];
+
+    [Fact]
+    public virtual void All_test_bases_must_be_implemented()
+    {
+        var concreteTests
+            = this.GetType().Assembly.GetTypes()
+                .Where(c => c.BaseType != typeof(object) && !c.IsAbstract && (c.IsPublic || c.IsNestedPublic))
+                .ToList();
+
+        var nonImplementedBases
+            = this.GetBaseTestClasses()
+                .Where(t => !this.IgnoredTestBases.Contains(t) && !concreteTests.Any(c => Implements(c, t)))
+                .Select(t => t.FullName)
+                .ToList();
+
+        Assert.False(
+            nonImplementedBases.Count > 0,
+            "\r\n-- Missing derived classes for --\r\n" + string.Join(Environment.NewLine, nonImplementedBases));
+    }
+
+    // Filter for abstract base types which end with Tests and possibly generic arity (e.g. FooTests`2)
+    protected virtual IEnumerable<Type> GetBaseTestClasses()
+        => typeof(TestSuiteImplementationTests).Assembly.ExportedTypes
+            .Where(t => Regex.IsMatch(t.Name, """Tests(`\d+)?$""") && t.IsAbstract && !t.IsSealed && !t.IsInterface);
+
+    private static bool Implements(Type type, Type interfaceOrBaseType)
+        => (type.IsPublic || type.IsNestedPublic) && interfaceOrBaseType.IsGenericTypeDefinition
+            ? GetGenericTypeImplementations(type, interfaceOrBaseType).Any()
+            : interfaceOrBaseType.IsAssignableFrom(type);
+
+    private static IEnumerable<Type> GetGenericTypeImplementations(Type type, Type interfaceOrBaseType)
+    {
+        var typeInfo = type.GetTypeInfo();
+
+        if (!typeInfo.IsGenericTypeDefinition)
+        {
+            var baseTypes = interfaceOrBaseType.IsInterface
+                ? typeInfo.ImplementedInterfaces
+                : GetBaseTypes(type);
+            foreach (var baseType in baseTypes)
+            {
+                if (baseType.IsGenericType
+                    && baseType.GetGenericTypeDefinition() == interfaceOrBaseType)
+                {
+                    yield return baseType;
+                }
+            }
+
+            if (type.IsGenericType
+                && type.GetGenericTypeDefinition() == interfaceOrBaseType)
+            {
+                yield return type;
+            }
+        }
+    }
+
+    private static IEnumerable<Type> GetBaseTypes(Type type)
+    {
+        var t = type.BaseType;
+
+        while (t != null)
+        {
+            yield return t;
+
+            t = t.BaseType;
+        }
+    }
+}