public static void TestIsDigit(char c) { Assert.True(CL.IsDigit(c)); }
public static void TestSum() { Assert.Equal(7, CL.Sum(3, 4)); }
public static void TestLeaveOnlyNumbers() { Assert.Equal("2342", CL.LeaveOnlyNumbers("asdfasd2342")); Assert.Equal("2342a", CL.LeaveOnlyNumbers("asdfasd2342")); Assert.Equal("1342", CL.LeaveOnlyNumbers("1s3sda4sdf2")); }