Add tests without features

Author: umgefahren

.github/workflows/ci.yml

@@ -37,9 +37,12 @@ jobs:
 
       - uses: Swatinem/rust-cache@v2
 
-      - name: Run all tests
+      - name: Run tests with all features enabled
         run: cargo test --all-features
 
+      - name: Run tests without features enabled
+        run: cargo test
+
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
@@ -57,9 +60,12 @@ jobs:
 
       - uses: Swatinem/rust-cache@v2
 
-      - name: Run cargo clippy
+      - name: Run cargo clippy with all features enabled
         run: cargo clippy --all-features
 
+      - name: Run cargo clippy without any features enabled
+        run: cargo clippy
+
   rustfmt:
     name: Rust format
     runs-on: ubuntu-latest