test: Add E2E test

.github/workflows/ci.yml

@@ -36,6 +36,37 @@ jobs:
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
 
+  e2e-test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: Setup Go
+        uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5
+        with:
+          go-version: 1.24
+          check-latest: true
+
+      - name: Setup Node
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          node-version: 20
+          check-latest: true
+
+      - name: Setup PNPM
+        uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4
+        with:
+          version: 10
+
+      - name: Build Binary
+        run: make
+
+      - name: Run E2E Tests
+        run: chmod +x test/e2e.sh && ./test/e2e.sh
+        shell: bash
+
   goreleaser-test:
     runs-on: ubuntu-latest
     timeout-minutes: 15

test/e2e.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -e
+
+scriptDir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+
+if ! command -v pmg &> /dev/null; then
+    alias pmg="$scriptDir/../bin/pmg"
+fi
+
+echo "Running e2e tests..."
+
+## All these should be successful
+pmg npm install express --dry-run
+pmg --dry-run npm install express
+pmg --dry-run pnpm add express
+
+## All these should fail
+pmg --dry-run npm install nyc-config@10.0.0