public void GenerateFavoriteNumber_Returns_Generated_Number()
{
// Arrange
var numberGeneratorMock = Substitute.For <INumberGenerator>();
numberGeneratorMock.GetRandom(Arg.Any <int>(), Arg.Any <int>()).Returns(13);
var subject = new LuckyNumberService(numberGeneratorMock);
// Act
var result = subject.GenerateFavoriteNumber();
// Assert
Assert.Equal(13, result);
}
public void GenerateFavoriteNumber_Throws_ArgumentOutOfRangeException_When_Min_Is_Less_Then_1()
{
// Arrange
var numberGeneratorMock = Substitute.For <INumberGenerator>();
var subject = new LuckyNumberService(numberGeneratorMock);
// Act
void Action()
{
subject.GenerateFavoriteNumber(-1);
}
// Assert
Assert.Throws <ArgumentOutOfRangeException>(() => Action());
}