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Rename Euros::from_cents to from_cents_as_i64

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The constructor takes a raw i64 count of cents. Naming the unit at the call
site keeps it distinct from the Decimal-based constructor added next, where
the argument is an amount in euros rather than a cent count.

Also fixes a typo in a test name.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Marcel Enguehard 2026-08-23 15:16:37 +02:00
parent 85b0836d6e
commit 4506231f02
2 changed files with 21 additions and 21 deletions
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20
crates/immo-core/src/euros.rs
View file

@ -8,7 +8,7 @@ pub struct Euros {
}
impl Euros {
pub const fn from_cents(value_as_cents: i64) -> Self {
pub const fn from_cents_as_i64(value_as_cents: i64) -> Self {
Euros { value_as_cents }
}
@ -33,13 +33,13 @@ mod tests {
#[test]
fn from_cents_to_euros_to_cents_stays_equals() {
let euros = Euros::from_cents(123_456_00);
let euros = Euros::from_cents_as_i64(123_456_00);
assert_eq!(euros.as_cents(), 123_456_00);
}
#[test]
fn from_positive_cents_to_decimal_has_scale_2_and_correct_mantissa() {
let euros = Euros::from_cents(123_456_78);
let euros = Euros::from_cents_as_i64(123_456_78);
assert_eq!(
euros.as_decimal().scale(),
2,
@ -54,7 +54,7 @@ mod tests {
#[test]
fn from_negative_cents_to_decimal_has_correct_scale_and_mantissa() {
let euros = Euros::from_cents(-123_456_78);
let euros = Euros::from_cents_as_i64(-123_456_78);
assert_eq!(
euros.as_decimal().scale(),
2,
@ -69,7 +69,7 @@ mod tests {
#[test]
fn from_max_i64_cents_to_decimal_has_correct_scale_and_mantissa() {
let euros = Euros::from_cents(i64::MAX);
let euros = Euros::from_cents_as_i64(i64::MAX);
assert_eq!(
euros.as_decimal().scale(),
2,
@ -84,26 +84,26 @@ mod tests {
#[test]
fn from_0_cents_to_decimal_stays_zero() {
let euros = Euros::from_cents(0);
let euros = Euros::from_cents_as_i64(0);
assert_eq!(euros.as_decimal().scale(), 2);
assert_eq!(euros.as_decimal(), Decimal::ZERO);
}
#[test]
fn standard_euros_prints_correctly() {
let euros = Euros::from_cents(123_45);
let euros = Euros::from_cents_as_i64(123_45);
assert_eq!(format!("{}", euros), "123.45 €");
}
#[test]
fn euros_without_cents_prints_with_trailing_zeros() {
let euros = Euros::from_cents(123_00);
let euros = Euros::from_cents_as_i64(123_00);
assert_eq!(format!("{}", euros), "123.00 €");
}
#[test]
fn euros_with_negative_amount_print_with_minus() {
let euros = Euros::from_cents(-123_00);
fn euros_with_negative_amount_prints_with_minus() {
let euros = Euros::from_cents_as_i64(-123_00);
assert_eq!(format!("{}", euros), "-123.00 €");
}
}

22
crates/immo-core/src/loan_offer.rs
View file

@ -30,7 +30,7 @@ impl LoanOffer {
Err(LoanOfferError::NegativeInterestRate(annual_rate_in_percent))
} else if loan_duration_in_months == 0 {
Err(LoanOfferError::ZeroLoanDuration)
} else if borrowed_capital <= Euros::from_cents(0) {
} else if borrowed_capital <= Euros::from_cents_as_i64(0) {
Err(LoanOfferError::NonPositiveBorrowedCapital(borrowed_capital))
} else {
Ok(LoanOffer {
@ -48,7 +48,7 @@ mod tests {
#[test]
fn creating_loan_offer_with_negative_interest_rate_returns_negative_interest_rate_error() {
let ret = LoanOffer::new(Euros::from_cents(123), Decimal::new(-45, 2), 5);
let ret = LoanOffer::new(Euros::from_cents_as_i64(123), Decimal::new(-45, 2), 5);
assert_eq!(
ret,
Err(LoanOfferError::NegativeInterestRate(Decimal::new(-45, 2)))
@ -57,18 +57,18 @@ mod tests {
#[test]
fn creating_loan_offer_with_null_loan_duration_returns_zero_loan_duration_error() {
let ret = LoanOffer::new(Euros::from_cents(123), Decimal::new(45, 2), 0);
let ret = LoanOffer::new(Euros::from_cents_as_i64(123), Decimal::new(45, 2), 0);
assert_eq!(ret, Err(LoanOfferError::ZeroLoanDuration));
}
#[test]
fn creating_loan_offer_with_negative_borrowed_capital_returns_non_positive_borrowed_capital_error()
{
let ret = LoanOffer::new(Euros::from_cents(-1), Decimal::new(45, 2), 15);
let ret = LoanOffer::new(Euros::from_cents_as_i64(-1), Decimal::new(45, 2), 15);
assert_eq!(
ret,
Err(LoanOfferError::NonPositiveBorrowedCapital(
Euros::from_cents(-1)
Euros::from_cents_as_i64(-1)
))
);
}
@ -76,22 +76,22 @@ mod tests {
#[test]
fn creating_loan_offer_with_null_borrowed_capital_returns_non_positive_borrowed_capital_error()
{
let ret = LoanOffer::new(Euros::from_cents(0), Decimal::new(45, 2), 15);
let ret = LoanOffer::new(Euros::from_cents_as_i64(0), Decimal::new(45, 2), 15);
assert_eq!(
ret,
Err(LoanOfferError::NonPositiveBorrowedCapital(
Euros::from_cents(0)
Euros::from_cents_as_i64(0)
))
);
}
#[test]
fn creating_loan_offer_with_correct_inputs_works() {
let ret = LoanOffer::new(Euros::from_cents(10), Decimal::new(45, 2), 15);
let ret = LoanOffer::new(Euros::from_cents_as_i64(10), Decimal::new(45, 2), 15);
assert_eq!(
ret,
Ok(LoanOffer {
borrowed_capital: Euros::from_cents(10),
borrowed_capital: Euros::from_cents_as_i64(10),
annual_rate_in_percent: Decimal::new(45, 2),
loan_duration_in_months: 15
})
@ -100,11 +100,11 @@ mod tests {
#[test]
fn creating_loan_offer_with_null_interest_rate_works() {
let ret = LoanOffer::new(Euros::from_cents(10), Decimal::ZERO, 15);
let ret = LoanOffer::new(Euros::from_cents_as_i64(10), Decimal::ZERO, 15);
assert_eq!(
ret,
Ok(LoanOffer {
borrowed_capital: Euros::from_cents(10),
borrowed_capital: Euros::from_cents_as_i64(10),
annual_rate_in_percent: Decimal::ZERO,
loan_duration_in_months: 15
})