use std::path::{Path, PathBuf};

use status::Code;
use xatu::SourceFile;

fn source_file(path: &str) -> SourceFile {
    SourceFile {
        path: PathBuf::from(path),
        source: std::fs::read_to_string(testdata_path(path)).expect("fixture should be readable"),
    }
}

fn testdata_path(path: &str) -> PathBuf {
    if Path::new(path).exists() {
        return PathBuf::from(path);
    }

    let runfiles = PathBuf::from(std::env::var("TEST_SRCDIR").expect("TEST_SRCDIR should be set"));
    let workspace = std::env::var("TEST_WORKSPACE").expect("TEST_WORKSPACE should be set");

    runfiles.join(workspace).join("src/xatu").join(path)
}

#[test]
fn future_sight_reports_clean_sources_as_clean() {
    let report = xatu::future_sight(vec![source_file("testdata/clean.nix")])
    .expect("fixture should parse");

    assert!(report.is_clean());
}

#[test]
fn future_sight_rejects_parse_errors() {
    let error = xatu::future_sight(vec![source_file("testdata/invalid.nix")])
    .expect_err("fixture should fail to parse");

    assert_eq!(error.code(), Code::FailedPrecondition);
}

#[test]
fn future_sight_reports_empty_inherit_findings() {
    let report = xatu::future_sight(vec![source_file("testdata/empty_inherit.nix")])
    .expect("fixture should parse");

    assert_eq!(report.diagnostics.len(), 1);

    let diagnostic = &report.diagnostics[0];
    assert_eq!(
        report.files.get(diagnostic.file_id).path,
        PathBuf::from("testdata/empty_inherit.nix"),
    );
    assert_eq!(diagnostic.finding.rule_id, "empty_inherit");
}