ci: use custom Revolt.toml for tests

.github/workflows/rust.yaml

@@ -31,10 +31,13 @@ jobs:
           docker-compose -f docker-compose.db.yml up -d
 
       - name: Copy .env.example
-        if: github.event_name != 'pull_request' && github.ref_name == 'master'
         run: |
           cp .env.example .env
 
+      - name: Copy Revolt.test.toml
+        run: |
+          cp Revolt.test.toml Revolt.toml
+
       - name: Run cargo test
         uses: actions-rs/cargo@v1
         env:

Revolt.test.toml

@@ -0,0 +1,3 @@
+[database]
+mongodb = "mongodb://localhost"
+redis = "redis://localhost/"