public void Check_four_leeter_that_is_not_palindrone()
{
Palindrone palindrone = new Palindrone("abcd");
Assert.False(palindrone.IsValid());
}
public void Check_one_letter_that_is_palindrone()
{
Palindrone palindrone = new Palindrone("a");
Assert.True(palindrone.IsValid());
}
public void Check_three_letter_that_is_not_palindrone()
{
Palindrone palindrone = new Palindrone("abc");
Assert.False(palindrone.IsValid());
}