public void Test_Add1d()
{
//arrange
string direction = "HORIZAONTAL";
int row = 3;
int col = 2;
string word = "THANK";
int expect_len = 4;
//act
NewFile nf = new NewFile();
int act_len = nf.add_1dword(direction, row, col, word).Count;
//assert
Assert.AreEqual(expect_len, act_len, "The word is wrong insert");
}
