fix(ci): exclude tests that require a real display

Author: sassman

.github/workflows/build.yml

@@ -100,7 +100,7 @@ jobs:
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: cargo test
-        run: cargo test --all-features --all --locked -- -Z unstable-options
+        run: cargo test --all --locked -- -Z unstable-options
 
   audit:
     name: security audit

Cargo.toml

@@ -35,3 +35,6 @@ core-foundation-sys = "0.8"
 
 [target.'cfg(target_os = "linux")'.dependencies]
 x11rb = "0.7"
+
+[features]
+test_against_real_display = []

src/linux/x11_api.rs

@@ -268,6 +268,7 @@ impl PlatformApi for X11Api {
     }
 }
 
+#[cfg(feature = "test_against_real_display")]
 #[cfg(test)]
 mod test {
     use super::*;
@@ -315,6 +316,7 @@ mod test {
         let win = api.get_active_window()?;
         let image = api.capture_window_screenshot(win)?;
         let image: View<_, Bgra<u8>> = image.as_view().unwrap();
+
         let Bgra([b, g, r, a]) = image.get_pixel(10, 25);
         assert_ne!(b, 0);
         assert_ne!(g, 0);