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announcement/scripts/track_mutations.sh
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swaits e8e55b7676 chore: initial release v0.1.0
Runtime-agnostic oneshot broadcast channel for Rust.
2025-10-13 19:36:37 -06:00

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#!/usr/bin/env bash
# Track mutation testing scores over time
set -euo pipefail
# Configuration
HISTORY_FILE="mutation_history.json"
TEMP_FILE="mutants.out/outcomes.json"
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color
echo "🧬 Running mutation testing..."
echo ""
# Run mutation tests
if ! cargo mutants --no-shuffle --test-tool nextest --output-json; then
echo ""
echo -e "${RED}❌ Mutation testing failed${NC}"
exit 1
fi
echo ""
echo "📊 Analyzing results..."
# Check if outcomes.json exists
if [ ! -f "$TEMP_FILE" ]; then
echo -e "${RED}❌ No mutation results found${NC}"
exit 1
fi
# Extract stats from outcomes.json using jq
TOTAL_MUTANTS=$(jq '[.outcomes[] | select(.scenario != "Baseline")] | length' "$TEMP_FILE")
CAUGHT=$(jq '[.outcomes[] | select(.scenario != "Baseline") | select(.summary == "CaughtMutant")] | length' "$TEMP_FILE")
MISSED=$(jq '[.outcomes[] | select(.scenario != "Baseline") | select(.summary == "MissedMutant")] | length' "$TEMP_FILE")
TIMEOUT=$(jq '[.outcomes[] | select(.scenario != "Baseline") | select(.summary == "Timeout")] | length' "$TEMP_FILE")
UNVIABLE=$(jq '[.outcomes[] | select(.scenario != "Baseline") | select(.summary == "Unviable")] | length' "$TEMP_FILE")
# Calculate viable mutants (total - unviable)
VIABLE=$((TOTAL_MUTANTS - UNVIABLE))
# Calculate mutation score (caught / viable * 100)
if [ "$VIABLE" -eq 0 ]; then
SCORE=0
else
SCORE=$(echo "scale=2; $CAUGHT * 100 / $VIABLE" | bc)
fi
# Get current timestamp and git info
TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
GIT_COMMIT=$(git rev-parse HEAD 2>/dev/null || echo "unknown")
GIT_BRANCH=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "unknown")
# Create history entry
ENTRY=$(cat <<EOF
{
"timestamp": "$TIMESTAMP",
"git_commit": "$GIT_COMMIT",
"git_branch": "$GIT_BRANCH",
"stats": {
"total_mutants": $TOTAL_MUTANTS,
"viable": $VIABLE,
"caught": $CAUGHT,
"missed": $MISSED,
"timeout": $TIMEOUT,
"unviable": $UNVIABLE,
"score": $SCORE
}
}
EOF
)
# Initialize history file if it doesn't exist
if [ ! -f "$HISTORY_FILE" ]; then
echo "[]" > "$HISTORY_FILE"
fi
# Append entry to history
jq ". += [$ENTRY]" "$HISTORY_FILE" > "${HISTORY_FILE}.tmp"
mv "${HISTORY_FILE}.tmp" "$HISTORY_FILE"
# Display results
echo ""
echo "═══════════════════════════════════════════════════════"
echo " MUTATION TESTING RESULTS"
echo "═══════════════════════════════════════════════════════"
echo ""
echo "Total mutants: $TOTAL_MUTANTS"
echo "├─ Viable: $VIABLE"
echo "├─ Caught: $CAUGHT ($(echo "scale=1; $CAUGHT * 100 / $VIABLE" | bc)%)"
echo "├─ Missed: $MISSED"
echo "├─ Timeout: $TIMEOUT"
echo "└─ Unviable: $UNVIABLE"
echo ""
# Color the score based on value
if (( $(echo "$SCORE >= 90" | bc -l) )); then
COLOR=$GREEN
STATUS="✅ EXCELLENT"
elif (( $(echo "$SCORE >= 80" | bc -l) )); then
COLOR=$YELLOW
STATUS="⚠️ GOOD"
else
COLOR=$RED
STATUS="❌ NEEDS IMPROVEMENT"
fi
echo -e "${COLOR}Mutation Score: ${SCORE}% ${STATUS}${NC}"
echo ""
# Show previous score if available
PREV_SCORE=$(jq -r '.[-2].stats.score // empty' "$HISTORY_FILE" 2>/dev/null || echo "")
if [ -n "$PREV_SCORE" ]; then
DIFF=$(echo "scale=2; $SCORE - $PREV_SCORE" | bc)
if (( $(echo "$DIFF > 0" | bc -l) )); then
echo -e "${GREEN}⬆ Improved by ${DIFF}% from previous run${NC}"
elif (( $(echo "$DIFF < 0" | bc -l) )); then
echo -e "${RED}⬇ Decreased by ${DIFF#-}% from previous run${NC}"
else
echo "➡ No change from previous run"
fi
echo ""
fi
echo "═══════════════════════════════════════════════════════"
echo ""
echo "📝 Results saved to: $HISTORY_FILE"
echo "🔬 Full report: mutants.out/"
echo ""
# Exit with failure if score is below threshold
THRESHOLD=85
if (( $(echo "$SCORE < $THRESHOLD" | bc -l) )); then
echo -e "${RED}⚠️ Mutation score ($SCORE%) is below threshold ($THRESHOLD%)${NC}"
exit 1
fi
echo -e "${GREEN}✅ Mutation testing passed!${NC}"