#[test]
fn build_info_parser_extracts_expected_labels() {
    let metrics = r#"
# HELP gateway_build_info build info
# TYPE gateway_build_info gauge
gateway_build_info{service="gateway",version="1.2.3",git_sha="abc"} 1
runner_build_info{service="runner",version="2.0.0",git_sha="def"} 1
unrelated_metric 5
"#;

    let info = api::extract_build_info(metrics);
    assert_eq!(info.len(), 2);
    assert!(
        info.iter()
            .any(|i| i.service == "gateway" && i.version == "1.2.3" && i.git_sha == "abc")
    );
    assert!(
        info.iter()
            .any(|i| i.service == "runner" && i.version == "2.0.0" && i.git_sha == "def")
    );
}

#[test]
fn build_info_snapshot_has_required_services() {
    let metrics = r#"
gateway_build_info{service="gateway",version="1.2.3",git_sha="abc"} 1
aggregate_build_info{service="aggregate",version="1.0.0",git_sha="aaa"} 1
projection_build_info{service="projection",version="1.0.0",git_sha="bbb"} 1
runner_build_info{service="runner",version="2.0.0",git_sha="ccc"} 1
"#;

    let info = api::extract_build_info(metrics);
    for required in ["gateway", "aggregate", "projection", "runner"] {
        assert!(
            info.iter().any(|i| i.service == required),
            "missing build_info for service={required}"
        );
    }
}