Add upgrade test & enable init test (#175)

.github/workflows/e2e-tests.yml

@@ -15,9 +15,11 @@ jobs:
       matrix:
         command:
           - build
-          - scan
           - create
           - github-actions
+          - init
+          - scan
+          - upgrade
       fail-fast: false
     steps:
       - name: Checkout repository

tests/upgrade/run_tests.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -eou pipefail
+
+test_upgrade() {
+    if ! 3lv upgrade --force-reinstall; then
+        echo 'Failed to upgrade 3lv.'
+        exit 1
+    fi
+}
+
+main() {
+    test_upgrade
+
+    echo 'All tests passed!'
+}
+
+main
+