diff --git a/.tangled/workflows/tests.yaml b/.tangled/workflows/tests.yaml
new file mode 100644
index 0000000..19e949f
--- /dev/null
+++ b/.tangled/workflows/tests.yaml
@@ -0,0 +1,39 @@
+when:
+  - event: ["pull_request"]
+    branch: ["main"]
+
+engine: "nixery"
+
+clone:
+  skip: false
+  depth: 1
+  submodules: false
+
+dependencies:
+  nixpkgs:
+    - cargo
+    - diesel-cli
+    - postgresql
+    - rustc
+
+steps:
+  - name: "Start PostgreSQL"
+    command: |
+      initdb -D /tmp/pgdata
+      pg_ctl -D /tmp/pgdata -o "-k /tmp -p 5432" -w start
+      createdb -h 127.0.0.1 -p 5432 -U postgres app_test
+
+  - name: "prepare DB"
+    command: |
+      cd rust
+      diesel setup
+      diesel migration run
+    environment:
+      DATABASE_URL: postgres://postgres:postgres@localhost:5432/henka
+      TEST_DATABASE_URL: postgres://postgres:postgres@localhost:5432/henka_test
+
+  - name: "run tests"
+    command: |
+      cargo test
+    environment:
+      TEST_DATABASE_URL: postgres://postgres:postgres@localhost:5432/henka_test