Add BATS regression tests for node-reinstall

.travis.yml

@@ -0,0 +1,8 @@
+language: bash
+
+before_script:
+  - git clone --depth 1 https://github.com/bats-core/bats-core.git
+  - sudo bats-core/install.sh /usr/local
+
+script:
+  - bats test/node-reinstall.bats

Makefile

@@ -15,3 +15,6 @@ readme:
 	echo "## Commands" >> README.md
 	echo '' >> README.md
 	./node-reinstall -h | sed -n -e '/Commands:/,// p' | tail -n +3 >> README.md
+
+test:
+	bats test/node-reinstall.bats

README.md

@@ -90,6 +90,14 @@ Whenever you feel like you need to completely re-install Node and NPM, simply ex
 
     Usage:	node-reinstall [--nave|--nvm|--nvm-latest] [-h|--help] [-v|--version] [NODE_VERSION]
 
+## Test
+
+Run the BATS suite with:
+
+```bash
+make test
+```
+
 ## Commands
 
 	node-reinstall					re-install node and npm using nvm

test/node-reinstall.bats

@@ -0,0 +1,92 @@
+#!/usr/bin/env bats
+
+setup() {
+  TMPROOT="$(mktemp -d)"
+  export HOME="$TMPROOT/home"
+  export PREFIX="$TMPROOT/prefix"
+  export PATH="$TMPROOT/mock-bin:$PATH"
+  export LOGDIR="$TMPROOT/logs"
+
+  mkdir -p "$HOME" "$PREFIX/bin" "$TMPROOT/mock-bin" "$LOGDIR"
+
+  cat >"$TMPROOT/mock-bin/sudo" <<'EOF'
+#!/usr/bin/env bash
+exit 0
+EOF
+  chmod +x "$TMPROOT/mock-bin/sudo"
+
+  cat >"$TMPROOT/mock-bin/rm" <<'EOF'
+#!/usr/bin/env bash
+exit 0
+EOF
+  chmod +x "$TMPROOT/mock-bin/rm"
+
+  cat >"$TMPROOT/mock-bin/node" <<'EOF'
+#!/usr/bin/env bash
+echo "v18.19.0"
+EOF
+  chmod +x "$TMPROOT/mock-bin/node"
+
+  cat >"$TMPROOT/mock-bin/which" <<'EOF'
+#!/usr/bin/env bash
+if [[ "${1:-}" == "npm" ]]; then
+  exit 1
+fi
+command -v "$1"
+EOF
+  chmod +x "$TMPROOT/mock-bin/which"
+
+  cat >"$TMPROOT/mock-bin/curl" <<'EOF'
+#!/usr/bin/env bash
+out=""
+for ((i=1; i<=$#; i++)); do
+  if [[ "${!i}" == "-o" ]]; then
+    j=$((i + 1))
+    out="${!j}"
+  fi
+done
+
+if [[ -n "$out" ]]; then
+  cat >"$out" <<'SH'
+#!/usr/bin/env bash
+exit 0
+SH
+  chmod +x "$out"
+  exit 0
+fi
+
+echo '{"tag_name":"v0.39.7"}'
+EOF
+  chmod +x "$TMPROOT/mock-bin/curl"
+
+  cat >"$TMPROOT/mock-bin/nave" <<EOF
+#!/usr/bin/env bash
+printf '%s\n' "\$*" >>"$LOGDIR/nave.log"
+exit 0
+EOF
+  chmod +x "$TMPROOT/mock-bin/nave"
+}
+
+teardown() {
+  rm -rf "$TMPROOT"
+}
+
+@test "help prints usage" {
+  run bash ./node-reinstall --help
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"Usage:"* ]]
+}
+
+@test "version prints version" {
+  run bash ./node-reinstall --version
+  [ "$status" -eq 0 ]
+  [ "$output" = "0.0.17" ]
+}
+
+@test "force nave path completes with mocked externals" {
+  run bash ./node-reinstall --force --nave 18.19.0
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"node-reinstall is done."* ]]
+  [ -f "$LOGDIR/nave.log" ]
+  grep -q 'usemain v18.19.0' "$LOGDIR/nave.log"
+}