✅ Add ReflectionTests

X10D.Tests/src/ReflectionTests.cs

@@ -0,0 +1,70 @@
+namespace X10D.Tests
+{
+    using System;
+    using System.ComponentModel;
+    using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+    /// <summary>
+    /// Tests for <see cref="ReflectionExtensions"/>.
+    /// </summary>
+    [TestClass]
+    public class ReflectionTests
+    {
+        /// <summary>
+        /// Test for <see cref="ReflectionExtensions.GetDefaultValue{T}(System.Reflection.MemberInfo)"/>.
+        /// </summary>
+        [TestMethod]
+        public void GetDefaultValue()
+        {
+            var klass = new TestClass();
+
+            foreach (var property in klass.GetType().GetProperties())
+            {
+                Assert.AreEqual("Foo", property.GetDefaultValue<string>());
+            }
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReflectionExtensions.GetDescription(System.Reflection.MemberInfo)"/>.
+        /// </summary>
+        [TestMethod]
+        public void GetDescription()
+        {
+            var klass = new TestClass();
+
+            foreach (var property in klass.GetType().GetProperties())
+            {
+                Assert.AreEqual("Test description", property.GetDescription());
+            }
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReflectionExtensions.GetDescription(System.Reflection.MemberInfo)"/>.
+        /// </summary>
+        [TestMethod]
+        public void SelectFromCustomAttribute()
+        {
+            var klass = new TestClass();
+
+            foreach (var property in klass.GetType().GetProperties())
+            {
+                var value = property.SelectFromCustomAttribute<TestAttribute, string>(a => a.TestValue);
+                Assert.AreEqual("Bar", value);
+            }
+        }
+
+        [AttributeUsage(AttributeTargets.Property)]
+        private sealed class TestAttribute : Attribute
+        {
+            public string TestValue { get; set; }
+        }
+
+        private sealed class TestClass
+        {
+            [System.ComponentModel.Description("Test description")]
+            [DefaultValue("Foo")]
+            [Test(TestValue = "Bar")]
+            public string TestProperty { get; set; }
+        }
+    }
+}