Fixed tests and git actions (#30)

Reviewed-on: #30
Co-authored-by: Tom Tröger <t.troeger.02@gmail.com>
Co-committed-by: Tom Tröger <t.troeger.02@gmail.com>

.gitea/workflows/tests/go-test.yaml

@@ -0,0 +1,48 @@
+name: GoLang Tests
+run-name: ${{ gitea.actor }} is testing golang Code
+on: push
+
+jobs:
+  testing:
+    name: Run Go Tests
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_USER: root
+          POSTGRES_PASSWORD: password
+          POSTGRES_DB: arbeitszeitmessung
+    env:
+      POSTGRES_HOST: postgres
+      POSTGRES_USER: root
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: arbeitszeitmessung
+      POSTGRES_PORT: 5432
+      RUNNER_TOOL_CACHE: /toolcache # Runner Tool Cache
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: Backend/go.mod
+      - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
+        id: hash-go
+        with:
+          patterns: |
+            go.mod
+            go.sum
+      - name: cache go
+        id: cache-go
+        uses: actions/cache@v4
+        with:
+          path: |-
+            /go_path
+            /go_cache
+          key: arbeitszeitmessung-${{ steps.hash-go.outputs.hash }}
+          restore-keys: |-
+            arbeitszeitmessung-
+      - name: Run Go Tests
+        run: cd Backend && go test ./...