forked from eva/focus-flow
92 lines
2.7 KiB
Dart
92 lines
2.7 KiB
Dart
// SPDX-FileCopyrightText: 2026 FocusFlow contributors
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// SPDX-License-Identifier: AGPL-3.0-only
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/// Runs the Check Coverage workspace validation tool.
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library;
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import 'dart:io';
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/// Checks an LCOV report against a package-library coverage threshold.
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void main(List<String> arguments) {
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if (arguments.length != 2) {
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stderr.writeln('Usage: dart run tool/check_coverage.dart <lcov> <percent>');
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exitCode = 64;
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return;
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}
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final lcovFile = File(arguments[0]);
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final threshold = double.tryParse(arguments[1]);
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if (threshold == null) {
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stderr.writeln('Coverage threshold must be numeric: ${arguments[1]}');
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exitCode = 64;
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return;
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}
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if (!lcovFile.existsSync()) {
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stderr.writeln('Coverage file not found: ${lcovFile.path}');
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exitCode = 1;
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return;
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}
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final coverage = _readCoverage(lcovFile);
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if (coverage.totalLines == 0) {
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stderr.writeln('Coverage file has no package lib/ lines.');
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exitCode = 1;
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return;
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}
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final percent = coverage.percent;
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stdout.writeln(
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'Package lib coverage: ${percent.toStringAsFixed(2)}% '
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'(${coverage.coveredLines}/${coverage.totalLines})',
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);
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if (percent < threshold) {
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stderr.writeln(
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'Coverage ${percent.toStringAsFixed(2)}% is below '
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'${threshold.toStringAsFixed(2)}%.',
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);
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exitCode = 1;
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}
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}
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/// Runs the `this operation` top-level operation.
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/// This function is part of the file-level API and gives callers a direct way to use the associated scheduler behavior.
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({int coveredLines, int totalLines, double percent}) _readCoverage(File file) {
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var includeFile = false;
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var coveredLines = 0;
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var totalLines = 0;
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for (final line in file.readAsLinesSync()) {
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if (line.startsWith('SF:')) {
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includeFile = _includeSourceFile(line.substring(3));
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continue;
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}
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if (!includeFile || !line.startsWith('DA:')) {
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continue;
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}
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final comma = line.indexOf(',');
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if (comma == -1) {
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continue;
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}
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totalLines += 1;
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final hits = int.tryParse(line.substring(comma + 1).split(',').first) ?? 0;
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if (hits > 0) {
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coveredLines += 1;
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}
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}
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final percent = totalLines == 0 ? 0.0 : coveredLines * 100 / totalLines;
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return (
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coveredLines: coveredLines,
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totalLines: totalLines,
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percent: percent,
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);
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}
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/// Top-level helper that performs the `_includeSourceFile` operation for this file.
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/// Keeping the helper private makes the surrounding flow easier to read while preventing unrelated libraries from depending on implementation detail.
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bool _includeSourceFile(String path) {
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final normalized = path.replaceAll('\\', '/');
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return normalized.contains('/packages/') &&
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normalized.contains('/lib/') &&
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!normalized.endsWith('.g.dart');
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}
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