diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 69079f2..2d991b9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,6 +16,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 100
+          fetch-tags: true
 
       - name: Set Node.js 20.x
         uses: actions/setup-node@v4
diff --git a/__tests__/main.test.ts b/__tests__/main.test.ts
index 26dbbfc..23fc138 100644
--- a/__tests__/main.test.ts
+++ b/__tests__/main.test.ts
@@ -12,9 +12,21 @@ clear()
 const __filename = fileURLToPath(import.meta.url); // get the resolved path to the file
 const __dirname = path.dirname(__filename); // get the name of the directory
 
-test('missing values should result in failure', () => {
-  expect.assertions(1)
+function resetEnv(): void {
+  process.env['INPUT_CONFIGURATION'] = ''
+  process.env['INPUT_OWNER'] = ''
+  process.env['INPUT_REPO'] = ''
+  process.env['INPUT_MODE'] = ''
+  process.env['INPUT_OFFLINEMODE'] = ''
+  process.env['INPUT_OUTPUTFILE'] = ''
+  process.env['INPUT_CACHE'] = ''
+  process.env['GITHUB_WORKSPACE'] = ''
+  process.env['INPUT_FROMTAG'] = ''
+  process.env['INPUT_TOTAG'] = ''
+}
 
+test('missing values should result in failure', () => {
+  resetEnv()
   process.env['GITHUB_WORKSPACE'] = '.'
   process.env['INPUT_OWNER'] = undefined
   process.env['INPUT_CONFIGURATION'] = 'configs/configuration.json'
@@ -30,6 +42,7 @@ test('missing values should result in failure', () => {
 })
 
 test('complete input should succeed', () => {
+  resetEnv()
   process.env['GITHUB_WORKSPACE'] = '.'
   process.env['INPUT_CONFIGURATION'] = 'configuration.json'
   process.env['INPUT_OWNER'] = 'mikepenz'
@@ -48,8 +61,9 @@ test('complete input should succeed', () => {
 })
 
 test('should write result to file', () => {
+  resetEnv()
   process.env['GITHUB_WORKSPACE'] = '.'
-  process.env['INPUT_CONFIGURATION'] = 'configuration.json'
+  process.env['INPUT_CONFIGURATION'] = 'configs/configuration.json'
   process.env['INPUT_OWNER'] = 'mikepenz'
   process.env['INPUT_REPO'] = 'release-changelog-builder-action'
   process.env['INPUT_FROMTAG'] = 'v0.3.0'
@@ -73,17 +87,19 @@ test('should write result to file', () => {
 })
 
 test('offline mode should work with commit mode', () => {
+  resetEnv()
   // This test verifies that the offlineMode parameter is correctly passed to the configuration
   // and that the OfflineRepository is used when offlineMode is enabled.
 
   // Set up environment variables for the test
   process.env['GITHUB_WORKSPACE'] = '.'
-  process.env['INPUT_CONFIGURATION'] = 'configuration.json'
+  process.env['INPUT_CONFIGURATION'] = 'configs/configuration_commit.json'
   process.env['INPUT_OWNER'] = 'mikepenz'
   process.env['INPUT_REPO'] = 'release-changelog-builder-action'
   process.env['INPUT_MODE'] = 'PR'
   process.env['INPUT_OFFLINEMODE'] = 'true'
   process.env['INPUT_OUTPUTFILE'] = 'test.md'
+  process.env['INPUT_CACHE'] = ''
 
   const ip = path.join(__dirname, '..', 'lib', 'main.js')
   const options: cp.ExecSyncOptions = {
@@ -93,6 +109,7 @@ test('offline mode should work with commit mode', () => {
   const result = cp.execFileSync('node', [ip], options).toString()
   // should succeed
   expect(result).toBeDefined()
+  console.log(result)
 
   const readOutput = fs.readFileSync('test.md')
   fs.unlinkSync('test.md')
diff --git a/package.json b/package.json
index f8994d0..709897b 100644
--- a/package.json
+++ b/package.json
@@ -13,11 +13,12 @@
     "lint": "eslint src/**/*.ts",
     "package": "ncc build --source-map --license licenses.txt",
     "test": "NODE_OPTIONS=--experimental-vm-modules jest --reporters=default --reporters=jest-junit",
+    "test-main": "NODE_OPTIONS=--experimental-vm-modules jest __tests__/main.test.ts --reporters=default --reporters=jest-junit",
     "test-github": "NODE_OPTIONS=--experimental-vm-modules jest __tests__/*.test.ts --reporters=default --reporters=jest-junit",
     "test-gitea": "NODE_OPTIONS=--experimental-vm-modules jest __tests__/gitea/*.test.ts --reporters=default --reporters=jest-junit",
     "test-demo": "NODE_OPTIONS=--experimental-vm-modules jest __tests__/demo/*.test.ts --reporters=default --reporters=jest-junit",
     "test-offline": "NODE_OPTIONS=--experimental-vm-modules jest __tests__/offline/*.test.ts --reporters=default --reporters=jest-junit",
-    "all": "npm run build && npm run format && npm run lint && npm run package && npm run test-github"
+    "all": "npm run build && npm run format && npm run lint && npm run package && npm run test-main"
   },
   "repository": {
     "type": "git",
diff --git a/tsconfig.json b/tsconfig.json
index 10a7a05..a7c6063 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,6 +10,7 @@
     "noImplicitThis": true,
     "moduleResolution": "Node16",
     "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    "isolatedModules": true,
     "lib": [ "ESNext","ES2021.String", "dom"]          /* Enable custom `ES2021.String` extension in typescript for `replaceAll` */
   },
   "exclude": ["node_modules", "__tests__/*.ts", "**/*.test.ts", "**/**/*.test.ts"],