public void TestIsContrain5() { int[] arr1 = new int[] { 1, 2, 3, 4, 5 }; bool rs1 = Program2.IsContrain5(arr1); Assert.AreEqual(true, rs1); int[] arr2 = new int[] { 1, 2, 3, 4, 6 }; bool rs2 = Program2.IsContrain5(arr2); Assert.AreEqual(false, rs2); }