GetAlignedInterval nun in UTC und Local unterschieden (Local beachtet Sommer-/Winterzeit); UnitTests begonnen

AMWD.Common.Tests/Extensions/EnumExtensionsTests.cs

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+using System;
+using System.Linq;
+using AMWD.Common.Tests.Utils;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using DescriptionAttribute = System.ComponentModel.DescriptionAttribute;
+
+namespace AMWD.Common.Tests.Extensions
+{
+	[TestClass]
+	public class EnumExtensionsTests
+	{
+		[TestMethod]
+		public void ShouldReturnEmptyList()
+		{
+			// arrange
+			var enumValue = TestEnum.Two;
+
+			// act
+			var customList = enumValue.GetAttributes<CustomMultipleAttribute>();
+			var descriptionList = enumValue.GetAttributes<DescriptionAttribute>();
+
+			// assert
+			Assert.IsNotNull(customList);
+			Assert.IsFalse(customList.Any());
+			Assert.IsNotNull(descriptionList);
+			Assert.IsFalse(descriptionList.Any());
+		}
+
+		[TestMethod]
+		public void ShouldReturnList()
+		{
+			// arrange
+			var enumValue = TestEnum.Zero;
+
+			// act
+			var customList = enumValue.GetAttributes<CustomMultipleAttribute>();
+			var descriptionList = enumValue.GetAttributes<DescriptionAttribute>();
+
+			// assert
+			Assert.IsNotNull(customList);
+			Assert.IsTrue(customList.Any());
+			Assert.AreEqual(2, customList.Count());
+			Assert.IsNotNull(descriptionList);
+			Assert.IsTrue(descriptionList.Any());
+			Assert.AreEqual(1, descriptionList.Count());
+		}
+
+		[TestMethod]
+		public void ShouldReturnNothing()
+		{
+			// arrange
+			var enumValue = TestEnum.Two;
+
+			// act
+			var customAttribute = enumValue.GetAttribute<CustomMultipleAttribute>();
+			var descriptionAttribute = enumValue.GetAttribute<DescriptionAttribute>();
+
+			// assert
+			Assert.IsNull(customAttribute);
+			Assert.IsNull(descriptionAttribute);
+		}
+
+		[TestMethod]
+		public void ShouldReturnFirstAttribute()
+		{
+			// arrange
+			var enumValue = TestEnum.Zero;
+
+			// act
+			var customAttribute = enumValue.GetAttribute<CustomMultipleAttribute>();
+			var descriptionAttribute = enumValue.GetAttribute<DescriptionAttribute>();
+
+			// assert
+			Assert.IsNotNull(customAttribute);
+			Assert.AreEqual("nix", customAttribute.Name);
+			Assert.IsNotNull(descriptionAttribute);
+			Assert.AreEqual("Null", descriptionAttribute.Description);
+		}
+
+		[TestMethod]
+		public void ShouldReturnDescriptionOrStringRepresentation()
+		{
+			// arrange
+			var enumWithDescription = TestEnum.One;
+			var enumWithoutDescripton = TestEnum.Two;
+
+			// act
+			string description = enumWithDescription.GetDescription();
+			string noDescription = enumWithoutDescripton.GetDescription();
+
+			// assert
+			Assert.AreEqual("Eins", description);
+			Assert.AreEqual(enumWithoutDescripton.ToString(), noDescription);
+		}
+
+		internal enum TestEnum
+		{
+			[CustomMultiple("nix")]
+			[CustomMultiple("Null")]
+			[Description("Null")]
+			Zero,
+			[Description("Eins")]
+			One,
+			Two,
+		}
+	}
+}