from collections import Counter

from scripts.ruff_ratchet import normalized_findings


def test_normalized_findings_ignore_line_number_changes(tmp_path):
    source = tmp_path / "sample.py"
    source.write_text("\nvalue = missing\n", encoding="utf-8")
    diagnostics = [
        {
            "filename": str(source),
            "code": "F821",
            "message": "Undefined name `missing`",
            "location": {"row": 2, "column": 9},
        }
    ]

    assert normalized_findings(diagnostics, tmp_path) == Counter(
        {("sample.py", "F821", "Undefined name `missing`", "value = missing"): 1}
    )


def test_normalized_findings_preserve_duplicate_count(tmp_path):
    source = tmp_path / "sample.py"
    source.write_text("missing\n", encoding="utf-8")
    diagnostic = {
        "filename": str(source),
        "code": "F821",
        "message": "Undefined name `missing`",
        "location": {"row": 1, "column": 1},
    }

    assert normalized_findings([diagnostic, diagnostic], tmp_path).total() == 2