public void Throw_argument_exception_when_given_query_with_invalid_amount_type()
{
var query = new GetPurchaseInfoQuery(1.0m, (AmountType)15, 0.1m);
var queryHandler = new GetPurchaseInfoQueryHandler();
Assert.ThrowsException <ArgumentException>(() => queryHandler.Handle(query));
}
public void Return_a_failed_result_with_descriptive_error_message_when_given_query_with_invalid_vat_rate()
{
var query = new GetPurchaseInfoQuery(1.0m, AmountType.Net, 12.1m);
var queryHandler = new GetPurchaseInfoQueryHandler();
var result = queryHandler.Handle(query);
Assert.IsTrue(result.IsFailure);
Assert.AreEqual(1, result.Errors.Count());
Assert.AreEqual("Invalid VAT rate. VAT rate must be higher than 0 and lower than 1.", result.Errors.First());
}
public void Return_a_failed_result_with_1_descriptive_error_message_when_given_query_with_invalid_amount()
{
var query = new GetPurchaseInfoQuery(-1.0m, AmountType.Net, 0.1m);
var queryHandler = new GetPurchaseInfoQueryHandler();
var result = queryHandler.Handle(query);
Assert.IsTrue(result.IsFailure);
Assert.AreEqual(1, result.Errors.Count());
Assert.AreEqual("Can't use a negative or zero amount for money within purchases.", result.Errors.First());
}
public void Return_a_succesful_result_with_valid_dto_given_a_query_with_valid_values()
{
var query = new GetPurchaseInfoQuery(1.0m, AmountType.Net, 0.1m);
var queryHandler = new GetPurchaseInfoQueryHandler();
var result = queryHandler.Handle(query);
Assert.IsTrue(result.Success);
Assert.AreEqual(1.0m, result.Value.NetAmount);
Assert.AreEqual(1.1m, result.Value.GrossAmount);
Assert.AreEqual(0.1m, result.Value.VatAmount);
Assert.AreEqual(0.1m, result.Value.VatRate);
}