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59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
"""Tests for the separate line/branch coverage policy gate."""
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from __future__ import annotations
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import importlib.util
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from pathlib import Path
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SCRIPT = Path(__file__).parents[1] / "scripts" / "check_coverage_thresholds.py"
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SPEC = importlib.util.spec_from_file_location("check_coverage_thresholds", SCRIPT)
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assert SPEC is not None and SPEC.loader is not None
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MODULE = importlib.util.module_from_spec(SPEC)
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SPEC.loader.exec_module(MODULE)
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def _report(line: float = 49.0, branch: float = 36.0) -> dict[str, object]:
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return {
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"totals": {
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"percent_statements_covered": line,
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"percent_branches_covered": branch,
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},
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}
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def test_validate_coverage_accepts_exact_floors():
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assert MODULE.validate_coverage(
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_report(), min_line=49.0, min_branch=36.0,
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) == []
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def test_validate_coverage_reports_each_regression():
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failures = MODULE.validate_coverage(
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_report(line=48.9, branch=35.9), min_line=49.0, min_branch=36.0,
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)
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assert failures == [
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"line coverage 48.90% is below the 49.00% floor",
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"branch coverage 35.90% is below the 36.00% floor",
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]
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def test_validate_coverage_rejects_malformed_totals():
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assert MODULE.validate_coverage(
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{}, min_line=49.0, min_branch=36.0,
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) == ["coverage report is missing the totals object"]
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def test_validate_coverage_rejects_non_numeric_metrics():
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report = _report()
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report["totals"]["percent_statements_covered"] = True
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report["totals"]["percent_branches_covered"] = float("nan")
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assert MODULE.validate_coverage(
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report, min_line=49.0, min_branch=36.0,
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) == [
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"coverage report is missing numeric percent_statements_covered",
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"coverage report is missing numeric percent_branches_covered",
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]
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