fix tests, add CI, fix on mac, extend docs (#25)

* tests: fix float problems and PAT problem

* extend CONTRIBUTING.md

* extend build documentation, add GH action, fix build on MacOS

* fix build on Vercel

* update .gitignore and CONTRIBUTING.md

* fix all tests

* add backend tests to CI

* make e2e tests work

* add debug log to e2e test

* ignore copied tests in CI

.github/CONTRIBUTING.md

@@ -2,12 +2,15 @@
 
 ## Local Development
 
-To run and test GitHub-Stats-Extended, you need to follow a few simple steps:
+To set up the project GitHub-Stats-Extended locally, run the following commands:
 
-1. create [your own deployment](../docs/deploy.md)
-2. optional: add an SQL database; by using e.g. the ["Nile" integration](https://vercel.com/marketplace/nile) or by manually setting the environment variable `POSTGRES_URL`
-3. optional: [create your own OAuth App](https://github.com/settings/developers) and set environment variables `OAUTH_REDIRECT_URI`, `OAUTH_CLIENT_ID` and `OAUTH_CLIENT_SECRET` on Vercel accordingly
-4. optional: in addition to the Vercel project based on the `backend` folder, create a second project based on the `frontend/frontend` folder. No environment variables needed.
+```bash
+./vercel-preparation.sh
+(cd ./backend/ && npm install)
+(cd ./frontend/frontend/ && yarn install && yarn build-trends)
+```
+
+The easiest way to run and test the project is to deploy it to Vercel as described in the [deployment guide](../docs/deploy.md).
 
 ## Themes Contribution
 

.github/workflows/basic-build.yml

@@ -0,0 +1,37 @@
+name: Basic Build
+
+on:
+  workflow_dispatch: # Allows you to run this manually from the Actions tab
+  push:
+  pull_request:
+
+jobs:
+  execute:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: latest
+
+      - name: Install Yarn
+        run: npm install -g yarn
+
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Install and Build
+        run: |
+          chmod +x ./vercel-preparation.sh
+          ./vercel-preparation.sh
+          (cd ./backend/ && npm install)
+          (cd ./frontend/frontend/ && yarn install && yarn build-trends)
+
+      - name: Run Backend Tests
+        run: |
+            (cd ./backend/ && npm test)