rulemorph 0.3.3

YAML-based declarative data transformation engine for CSV/JSON to JSON
Documentation 
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#[test]
fn excel_rejects_empty_selected_range_with_clear_error() {
    let rule = load_rule(&fixtures_dir().join("t34_excel_input").join("rules.yaml"));
    let input = build_test_xlsx(XlsxFixtureOptions {
        empty_sheet: true,
        ..XlsxFixtureOptions::default()
    });
    let err = transform_input(&rule, InputData::Bytes(&input), None)
        .expect_err("empty sheet should fail before header lookup");
    assert_eq!(err.kind, TransformErrorKind::InvalidInput);
    assert!(err.message.contains("selected range has no columns"));
}

#[test]
fn excel_rejects_duplicate_header() {
    let rule = parse_rule_file(
        r#"
version: 2
input:
  format: excel
  excel:
    sheet: Users
mappings:
  - target: "id"
    source: "id"
"#,
    )
    .expect("parse rule");
    let input = build_test_xlsx(XlsxFixtureOptions {
        duplicate_header: true,
        ..XlsxFixtureOptions::default()
    });
    let err = transform_input(&rule, InputData::Bytes(&input), None)
        .expect_err("duplicate header should fail");
    assert_eq!(err.kind, TransformErrorKind::InvalidInput);
}