diff --git a/.gitea/workflows/test.yaml b/.gitea/workflows/test.yaml
index 6d642d6..4d364dc 100644
--- a/.gitea/workflows/test.yaml
+++ b/.gitea/workflows/test.yaml
@@ -47,15 +47,22 @@ jobs:
       - name: Run package
         run: seafile-mirror --help
 
-  # Run tool against own repository
+  # Run tool and sync a test library
   selftest:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Install dependencies
         uses: ./.gitea/actions/poetrybuild
-      - name: Try to run app
-        run: poetry run seafile-mirror --help
+      - name: Fill configuration for test library
+        run: |
+          sed -i "s|__seafile_server__|${{ secrets.SEAFILE_SERVER }}|" tests/seafile_mirror.conf.yaml
+          sed -i "s|__seafile_user__|${{ secrets.SEAFILE_USER }}|" tests/seafile_mirror.conf.yaml
+          sed -i "s|__seafile_pass__|${{ secrets.SEAFILE_PASS }}|" tests/seafile_mirror.conf.yaml
+      - name: Sync the library
+        run: poetry run seafile-mirror -c tests -v
+      - name: Attempt to find expected string in library
+        run: grep "__ci_test_expect__" tests/ci-test/testfile.txt
 
   # PYLINT / BLACK / ISORT / MYPY
   pylint: