use alpha_id::claml;

#[test]
fn expands_diabetes_5th_digit_codes_as_billable() {
    let map = claml::load("icd-claml/Klassifikationsdateien/icd10gm2026syst_claml_20250912.xml").unwrap();
    let e1190 = map.get("E11.90").expect("E11.90 synthesized from ModifierClass");
    assert_eq!(e1190.para295, "P", "terminal 5th-digit diabetes code must be billable");
    assert!(e1190.description.to_lowercase().contains("diabetes"),
        "composed description from parent + modifier labels: {:?}", e1190.description);
    let e1172 = map.get("E11.72").expect("E11.72 synthesized");
    assert_eq!(e1172.para295, "P");
    let a010 = map.get("A01.0").expect("A01.0 explicit");
    assert_eq!(a010.para295, "P");
    assert!(a010.description.contains("Typhus abdominalis"));
    assert_eq!(map.get("E11").expect("E11 root").para295, "V");
}

/// Regression test: a category with a single `<ModifiedBy all="true">` expands
/// correctly into its terminal 5th-digit leaves.
///
/// `C88.0` (Makroglobulinämie Waldenström) has exactly one `<ModifiedBy
/// all="true" code="S02C88_5"/>` with two `<ModifierClass>` codes ("0" and
/// "1"), yielding `C88.00` and `C88.01`.  Both codes appear in the
/// Alpha-ID corpus (`data/icd10gm2026_alphaidse_edvtxt_20250926.txt`).
///
/// The parent `C88.0` carries `Para295 = "P"` (already billable at the 4th
/// digit) and `Para301 = "V"`.  The synthesized terminals therefore inherit
/// `para295 = "P"` (parent value, not "V") and `para301 = "P"` ("V" promoted).
#[test]
fn expands_single_modifier_chain() {
    let map = claml::load("icd-claml/Klassifikationsdateien/icd10gm2026syst_claml_20250912.xml").unwrap();

    // C88.00 – verified in corpus (e.g. Alpha-ID I30531 "Makroglobulinämie Waldenström").
    let c8800 = map.get("C88.00").expect("C88.00 synthesized from single ModifiedBy");
    assert_eq!(c8800.para295, "P",
        "para295 inherited from parent C88.0 (which is already P, not V)");
    // Parent label + modifier label joined by " - ".
    assert!(c8800.description.contains("Waldenström"),
        "description must contain parent label: {:?}", c8800.description);
    assert!(c8800.description.contains("Remission"),
        "description must contain modifier label: {:?}", c8800.description);

    // C88.01 – verified in corpus (Alpha-ID I31044 "Makroglobulinämie in kompletter Remission").
    let c8801 = map.get("C88.01").expect("C88.01 synthesized");
    assert_eq!(c8801.para295, "P");
    assert!(c8801.description.contains("kompletter Remission"),
        "description must include modifier label: {:?}", c8801.description);

    // The 4th-digit parent itself must still be present and unchanged.
    let c880 = map.get("C88.0").expect("C88.0 explicit parent still present");
    assert_eq!(c880.para295, "P", "explicit parent entry must not be overwritten");
}