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https://github.com/kuhyx/utils.git
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Krzysztof kuhy Rudnicki
922fb36208
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
71 lines
2.3 KiB
Bash
Executable File
71 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# ============================================================================
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# Fail if lcov line coverage drops below a threshold.
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#
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# THE shared coverage gate for every package in this repo. Three byte-identical
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# copies of this file used to live under design_system/, github_device_auth/
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# and sync_settings_ui/scripts/ -- each claiming in its own header to exist for
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# one particular package. Those are now thin delegates to this file, for the
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# same reason check_file_length.sh is shared: a per-package copy is how one
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# package's idea of "covered" drifts from every other package's.
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#
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# Note for pure-Dart packages: `dart test --coverage` writes raw VM JSON, NOT
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# lcov. Run coverage:format_coverage before this gate, or it will happily pass
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# against a stale lcov.info from a previous run. crdt_sync_dart really did sit
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# at 96% for three weeks that way while believing it was at 100%.
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#
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# Usage: check_coverage.sh <lcov.info> <min_percent>
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# ============================================================================
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set -euo pipefail
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SCRIPT_NAME="$(basename "$0")"
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readonly SCRIPT_NAME
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usage() {
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echo "Usage: $SCRIPT_NAME <lcov.info> <min_percent>"
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echo " Fails when line coverage in lcov.info is below min_percent."
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exit 0
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}
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if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
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usage
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fi
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if [[ $# -ne 2 ]]; then
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usage
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fi
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lcov_file="$1"
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min_percent="$2"
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if [[ ! -f "$lcov_file" ]]; then
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echo "Error: $lcov_file not found. Run 'flutter test --coverage' first." >&2
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exit 1
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fi
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# Sum LH (lines hit) and LF (lines found) across every SF (source file)
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# block rather than trusting a single top-level total -- lcov.info has no
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# such total line, only per-file LH/LF pairs.
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read -r hit found <<< "$(awk '
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/^LH:/ { hit += substr($0, 4) }
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/^LF:/ { found += substr($0, 4) }
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END { print hit, found }
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' "$lcov_file")"
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if [[ "$found" -eq 0 ]]; then
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echo "Error: $lcov_file reports zero coverable lines." >&2
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exit 1
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fi
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percent=$(awk -v h="$hit" -v f="$found" 'BEGIN { printf "%.2f", (h / f) * 100 }')
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meets_threshold=$(awk -v p="$percent" -v m="$min_percent" 'BEGIN { print (p + 0 >= m + 0) ? 1 : 0 }')
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echo "Line coverage: $hit/$found ($percent%), threshold: $min_percent%"
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if [[ "$meets_threshold" -ne 1 ]]; then
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echo "Error: coverage $percent% is below the required $min_percent%." >&2
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exit 1
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fi
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