automapper-validation 0.6.0

AHB condition expression parsing, evaluation, and EDIFACT validation
Documentation 
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//! Contract test: ValidationIssue serialization includes instance_index
//! when Some and omits it when None.

use automapper_validation::{IssueKind, Severity, ValidationIssue};

fn missing_field_issue() -> ValidationIssue {
    ValidationIssue::new(
        Severity::Error,
        IssueKind::MissingRequiredField {
            field_name: "test".into(),
        },
    )
}

#[test]
fn instance_index_serializes_when_some() {
    let issue = missing_field_issue()
        .with_field_path("SG8/SG10/CCI/C240/7037")
        .with_instance_index(2);

    let json = serde_json::to_value(&issue).expect("serialize");
    assert_eq!(
        json.get("instance_index").and_then(|v| v.as_u64()),
        Some(2),
        "JSON should include instance_index=2 when set; got: {}",
        json,
    );
}

#[test]
fn instance_index_omitted_when_none() {
    let issue = missing_field_issue().with_field_path("SG8/SG10/CCI/C240/7037");

    let json = serde_json::to_value(&issue).expect("serialize");
    assert!(
        json.get("instance_index").is_none(),
        "JSON should omit instance_index when None; got: {}",
        json,
    );
}

#[test]
fn instance_index_round_trips_through_json() {
    let issue = missing_field_issue().with_instance_index(5);

    let json = serde_json::to_string(&issue).unwrap();
    let parsed: ValidationIssue = serde_json::from_str(&json).unwrap();
    assert_eq!(parsed.instance_index, Some(5));
}