Complete automated testing

tests/run.sh

@@ -4,26 +4,41 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 
-if ! command -v bats >/dev/null 2>&1; then
+if command -v shellcheck >/dev/null 2>&1; then
+  SHELLCHECK_TARGETS=()
+  while IFS= read -r file; do
+    SHELLCHECK_TARGETS+=("$file")
+  done < <(find "$PROJECT_ROOT/tests" -type f \( -name '*.bats' -o -name '*.sh' \) | sort)
+
+  if [[ ${#SHELLCHECK_TARGETS[@]} -gt 0 ]]; then
+    shellcheck --rcfile "$PROJECT_ROOT/.shellcheckrc" "${SHELLCHECK_TARGETS[@]}"
+  else
+    echo "No shell files to lint under tests/." >&2
+  fi
+else
+  echo "shellcheck not found; skipping linting." >&2
+fi
+
+if command -v bats >/dev/null 2>&1; then
+  cd "$PROJECT_ROOT"
+
+  if [[ -z "${TERM:-}" ]]; then
+    export TERM="xterm-256color"
+  fi
+
+  if [[ $# -eq 0 ]]; then
+    set -- tests
+  fi
+
+  if [[ -t 1 ]]; then
+    bats -p "$@"
+  else
+    TERM="${TERM:-xterm-256color}" bats --tap "$@"
+  fi
+else
   cat <<'EOF' >&2
 bats is required to run Mole's test suite.
 Install via Homebrew with 'brew install bats-core' or via npm with 'npm install -g bats'.
 EOF
   exit 1
 fi
-
-cd "$PROJECT_ROOT"
-
-if [[ -z "${TERM:-}" ]]; then
-  export TERM="xterm-256color"
-fi
-
-if [[ $# -eq 0 ]]; then
-  set -- tests
-fi
-
-if [[ -t 1 ]]; then
-  bats -p "$@"
-else
-  TERM="${TERM:-xterm-256color}" bats --tap "$@"
-fi