blob: f55b4f48b2ad83990c5387ad12ec3788279011fc [file] [log] [blame]
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:io';
/// Produces a per-library coverage summary when fed an lcov file, sorted by
/// increasing code coverage percentage.
///
/// Usage: `dart tool/unit_coverage lcov.info`
void main(List<String> args) {
if (args.isEmpty || args.length > 1) {
print('Usage: dart tool/unit_coverage lcov.info');
return;
}
final List<String> lines = File(args.single).readAsLinesSync();
final List<Coverage> coverages = <Coverage>[];
Coverage currentCoverage;
for (final String line in lines) {
if (line.startsWith('SF:')) {
final String library = line.split('SF:')[1];
currentCoverage = Coverage()..library = library;
coverages.add(currentCoverage);
}
if (line.startsWith('DA')) {
currentCoverage.totalLines += 1;
if (!line.endsWith(',0')) {
currentCoverage.testedLines += 1;
}
}
if (line == 'end_of_record') {
currentCoverage = null;
}
}
coverages.sort((Coverage left, Coverage right) {
final double leftPercent = left.testedLines / left.totalLines;
final double rightPercent = right.testedLines / right.totalLines;
return leftPercent.compareTo(rightPercent);
});
for (final Coverage coverage in coverages) {
final String coveragePercent = (coverage.testedLines / coverage.totalLines * 100).toStringAsFixed(2);
print('${coverage.library}: $coveragePercent%');
}
}
class Coverage {
String library;
int totalLines = 0;
int testedLines = 0;
}