然后再来看我做的一个类型约束泛型的单元测试代码。
写一个类似栈的需测试的类：
| public class StackNum<T> where T : struct { List<T> array = null; public StackNum() { this.array = new List<T>(); } public void Push(T value) { array.Add(value); } public T Pop() { T val = array[this.Length - 1]; this.array.Remove(val); return val; } public int Length { get { return this.array.Count; } } } |
StackNum
在测试项目编写一个测试帮助类
| class StackTestHelper { public static void LengthTest<T>() where T : struct { var stack = GetStackInstance<T>(); Assert.AreEqual(stack.Length, 0); } public static void PushTest<T>() where T : struct { var stack = GetStackInstance<T>(); stack.Push(default(T)); Assert.AreEqual(stack.Length, 1); } public static void PopTest<T>(params T[] values) where T : struct { var stack = GetStackInstance<T>(); if (values == null) { return; } int pushLength = 0; foreach (T val in values) { stack.Push(val); Assert.AreEqual(stack.Length, ++pushLength); } for (int i = stack.Length - 1; i >= 0; i--) { Assert.AreEqual<T>(stack.Pop(), values[i]); Assert.AreEqual(stack.Length, i); } } public static StackNum<T> GetStackInstance<T>() where T : struct { return new StackNum<T>(); } } |
