ocpi-tariffs 0.43.0

OCPI tariff calculations
Documentation 
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use std::path::Path;

use crate::{
    cdr,
    price::{
        self,
        test::{ExpectFields, UnwrapReport},
    },
    tariff,
    test::{self, IntoFields as _},
    timezone, ObjectType, Version,
};

#[test_each::file(
    glob = "ocpi-tariffs/test_data/v221/real_world/*/cdr*.json",
    name(segments = 2)
)]
fn should_price_cdr(cdr_json: &str, path: &Path) {
    const VERSION: Version = Version::V221;

    test::setup();

    let expect_json = test::read_expect_json(path, "price");
    let expect = test::parse_expect_json(expect_json.as_deref());
    let ExpectFields {
        timezone_find_expect,
        tariff_parse_expect,
        cdr_parse_expect,
        cdr_price_expect,
    } = expect.into_fields();

    let tariff_json = std::fs::read_to_string(path.parent().unwrap().join("tariff.json")).ok();
    let tariff = tariff_json
        .as_deref()
        .map(|json| tariff::parse_with_version(json, VERSION))
        .transpose()
        .unwrap();
    let tariff = tariff
        .map(|report| {
            let tariff::ParseReport {
                tariff,
                unexpected_fields,
            } = report;
            price::test::assert_parse_report(
                ObjectType::Tariff,
                unexpected_fields,
                tariff_parse_expect,
            );
            price::TariffSource::Override(vec![tariff])
        })
        .unwrap_or(price::TariffSource::UseCdr);

    let report = cdr::parse_with_version(cdr_json, VERSION).unwrap();
    let cdr::ParseReport {
        cdr,
        unexpected_fields,
    } = report;
    price::test::assert_parse_report(ObjectType::Cdr, unexpected_fields, cdr_parse_expect);

    let (timezone_source, warnings) = timezone::find_or_infer(&cdr).unwrap().into_parts();

    timezone::test::assert_find_or_infer_outcome(timezone_source, timezone_find_expect, &warnings);

    // The v221 tariff location does not contain a timezone field, this timezone should be
    // used from the `Location`.
    //
    // The tariff's time related fields are in UTC and can be converted to local time by using
    // the timezone from the `Location` object.
    //
    // > `start_date_time`:
    // >
    // > The time when this tariff becomes active, in UTC, time_zone field of the Location can be used to convert to local time.
    // >
    // > See: <https://github.com/ocpi/ocpi/blob/release-2.2.1-bugfixes/mod_tariffs.asciidoc#131-tariff-object>
    //
    // See: <https://github.com/ocpi/ocpi/blob/release-2.2.1-bugfixes/mod_locations.asciidoc>
    let report =
        cdr::price(&cdr, tariff, timezone_source.into_timezone()).unwrap_report(cdr.as_json_str());
    price::test::assert_price_report(report, cdr_price_expect);
}