use prometeu_analysis::{ids::FileId, span::Span};
use prometeu_compiler::common::diagnostics::{Diagnostic, DiagnosticBundle, Severity};

#[test]
fn diagnostic_span_is_valid_for_file() {
    // Fixture simples
    let text = "let x = 10;"; // len = 11
    let file = FileId(1);

    // Cria um diagnóstico com span válido: end exclusivo e <= len
    let span = Span::new(file, 0, text.len() as u32);
    assert!(span.end >= span.start);
    assert!(span.end <= text.len() as u32);

    let diag = Diagnostic {
        severity: Severity::Error,
        code: "E_TEST".to_string(),
        message: "testing".to_string(),
        span,
        related: vec![],
    };
    let bundle = DiagnosticBundle { diagnostics: vec![diag] };

    // Serialize para garantir que o span passa pelo pipeline sem panics
    let _json = serde_json::to_string(&bundle).expect("must serialize diagnostics");
}