from scripts.adapters.luac import parse_luac_output


def test_parses_single_syntax_error():
    stderr = "luac: ./src/game.lua:8: 'end' expected (to close 'function' at line 1) near '<eof>'"
    findings = parse_luac_output(stderr, repo_root="")
    assert len(findings) == 1
    f = findings[0]
    assert f.tool == "luac"
    assert f.rule_id == "syntax-error"
    assert f.severity == "critical"
    assert f.line == 8
    assert f.end_line == 8
    assert "end" in f.message


def test_parses_multiple_errors():
    stderr = (
        "luac: ./a.lua:3: unexpected symbol near '='\n"
        "luac: ./b.lua:17: 'end' expected near '<eof>'"
    )
    findings = parse_luac_output(stderr, repo_root="")
    assert len(findings) == 2
    files = {f.file for f in findings}
    assert "./a.lua" in files
    assert "./b.lua" in files


def test_strips_repo_root_prefix():
    stderr = "luac: /home/user/myrepo/src/game.lua:5: unexpected symbol near '+'"
    findings = parse_luac_output(stderr, repo_root="/home/user/myrepo")
    assert findings[0].file == "src/game.lua"


def test_empty_stderr_returns_empty():
    findings = parse_luac_output("", repo_root="")
    assert findings == []


def test_non_matching_lines_ignored():
    stderr = "warning: something else\nnot a luac error"
    findings = parse_luac_output(stderr, repo_root="")
    assert findings == []