Enable debug view explicitly and test it in CI

.github/workflows/integration.yml

@@ -19,4 +19,6 @@ jobs:
         sudo apt-get install -y libasound2-dev libudev-dev
     - uses: actions/checkout@master
     - name: Run tests
-      run: cargo test --verbose --all --all-features
+      run: |
+        cargo test --verbose --all
+        cargo test --verbose --all --all-features

winit/src/lib.rs

@@ -9,11 +9,8 @@ pub use application::Application;
 
 // We disable debug capabilities on release builds unless the `debug` feature
 // is explicitly enabled.
-#[cfg_attr(any(debug_assertions, feature = "debug"), path = "debug/basic.rs")]
-#[cfg_attr(
-    not(any(debug_assertions, feature = "debug")),
-    path = "debug/null.rs"
-)]
+#[cfg_attr(feature = "debug", path = "debug/basic.rs")]
+#[cfg_attr(not(feature = "debug"), path = "debug/null.rs")]
 mod debug;
 
 use debug::Debug;