public void SampleTest()
 {
     Assert.AreEqual(new int[] { 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2 }, new int[] { 1 }));
     Assert.AreEqual(new int[] { 2, 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { 1 }));
     Assert.AreEqual(new int[] { 1 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { 2 }));
     Assert.AreEqual(new int[] { 1, 2, 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { }));
     Assert.AreEqual(new int[] { }, KataArrayDiff.ArrayDiff(new int[] { }, new int[] { 1, 2 }));
 }
 public void TestArrayDiff()
 {
     //此单元测试无法通过,但是网站上的单元测试没问题,原因不明!!!
     //需要使用CollectionAssert代替Assert
     CollectionAssert.AreEqual(new int[] { 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2 }, new int[] { 1 }));
     CollectionAssert.AreEqual(new int[] { 2, 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { 1 }));
     CollectionAssert.AreEqual(new int[] { 1 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { 2 }));
     CollectionAssert.AreEqual(new int[] { 1, 2, 2 }, KataArrayDiff.ArrayDiff(new int[] { 1, 2, 2 }, new int[] { }));
     CollectionAssert.AreEqual(new int[] { }, KataArrayDiff.ArrayDiff(new int[] { }, new int[] { 1, 2 }));
 }