TDD Guard

#!/bin/bash
# TDD Guard Hook
# Enforces test-driven development by checking for tests before allowing code changes

FILE_PATH="$1"
TOOL_NAME="$2"

# Skip if editing test files
if [[ "$FILE_PATH" == *"test"* ]] || [[ "$FILE_PATH" == *"spec"* ]]; then
  exit 0
fi

# Check if corresponding test file exists
BASE_NAME=$(basename "$FILE_PATH" | sed 's/.[^.]*$//')
DIR_NAME=$(dirname "$FILE_PATH")

# Look for test files
TEST_FILE=""
for pattern in "${DIR_NAME}/${BASE_NAME}.test.*" "${DIR_NAME}/${BASE_NAME}.spec.*" "${DIR_NAME}/__tests__/${BASE_NAME}.*"; do
  if ls $pattern 1> /dev/null 2>&1; then
    TEST_FILE=$(ls $pattern 2>/dev/null | head -1)
    break
  fi
done

if [ -z "$TEST_FILE" ]; then
  echo "TDD Guard: No test file found for $FILE_PATH"
  echo "Please create tests before modifying implementation code."
  exit 1
fi

exit 0

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Edit|Write",
        "command": "./hooks/tdd-guard.sh"
      }
    ]
  }
}