public void should_return_correct_value_for_very_large_number()
{
int start = int.MaxValue;
int end = int.MaxValue;
string expectedString = $"{start} * {end} = 4611686014132420609 " + Environment.NewLine;
Assert.Equal(expectedString, Mutiplication.MutiplicationTable(start, end));
}
public void should_return_empty_string_when_start_bigger_than_end()
{
int start = 2;
int end = 1;
string expectedString = "";
Assert.Equal(expectedString, Mutiplication.MutiplicationTable(start, end));
}
public void should_return_one_row_when_start_equals_end()
{
int start = 1;
int end = 1;
string expectedString = "1 * 1 = 1 " + Environment.NewLine;
Assert.Equal(expectedString, Mutiplication.MutiplicationTable(start, end));
}
public void should_return_more_rows_when_start_less_than_end()
{
int start = 2;
int end = 5;
string expectedString =
"2 * 2 = 4 " + Environment.NewLine +
"2 * 3 = 6 3 * 3 = 9 " + Environment.NewLine +
"2 * 4 = 8 3 * 4 = 12 4 * 4 = 16 " + Environment.NewLine +
"2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25 " + Environment.NewLine;
Assert.Equal(expectedString, Mutiplication.MutiplicationTable(start, end));
}