Complete automated testing

tests/run.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+if ! command -v bats >/dev/null 2>&1; then
+  cat <<'EOF' >&2
+bats is required to run Mole's test suite.
+Install via Homebrew with 'brew install bats-core' or via npm with 'npm install -g bats'.
+EOF
+  exit 1
+fi
+
+cd "$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