@Test
public void shouldSupportDelimiter() throws Exception {
// Given
IStringCalculator sut = initSut();
// When
int result = sut.add("//;\\n1;2");
// Then
assertThat(result).isEqualTo(3);
}
@Test
public void shouldSumMultipleNumbers() throws Exception {
// Given
IStringCalculator sut = initSut();
// When
int result = sut.add("1,2,4,1");
// Then
assertThat(result).isEqualTo(8);
}
@Test
public void shouldHandleLineBreaks() throws Exception {
// Given
IStringCalculator sut = initSut();
// When
int result = sut.add("1\n2,3");
// Then
assertThat(result).isEqualTo(6);
}
@Test
public void shouldReturnThree() throws Exception {
// Given
IStringCalculator sut = initSut();
// When
int result = sut.add("1,2");
// Then
assertThat(result).isEqualTo(3);
}
@Test
public void shouldThrowExceptionWithNegativeNumbers() throws Exception {
// Given
IStringCalculator sut = initSut();
// When
try {
int result = sut.add("-1,2,-3");
fail("Exception expected ");
} catch (Exception e) {
// Then
assertThat(e).hasMessage("Negatives not allowed:[-1, -3]");
}
}