Update CI dependencies and fix static callback in test

Added at-spi2-core and xfce4-session to CI dependencies for improved test environment setup. Redirected Xvfb, xfwm4, and xfce4-panel output to /dev/null to reduce log noise. Marked notification_callback as static in test_tray.cpp to resolve potential linkage or lifetime issues.

Author: ReenigneArcher

.github/workflows/ci.yml

@@ -51,6 +51,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y \
+            at-spi2-core \
             build-essential \
             cmake \
             ${{ matrix.appindicator }} \
@@ -62,6 +63,7 @@ jobs:
             ninja-build \
             xfce4-goodies \
             xfce4-panel \
+            xfce4-session \
             xfwm4 \
             xvfb
 
@@ -175,13 +177,13 @@ jobs:
         run: |
           if [ "${{ runner.os }}" = "Linux" ]; then
             export DISPLAY=:1
-            Xvfb ${DISPLAY} -screen 0 1920x1080x24 &
+            Xvfb ${DISPLAY} -screen 0 1920x1080x24 2>/dev/null &
             XVFB_PID=$!
             sleep 2
             dbus-run-session -- bash -c '
-              xfwm4 &
+              xfwm4 2>/dev/null &
               WM_PID=$!
-              xfce4-panel &
+              xfce4-panel 2>/dev/null &
               PANEL_PID=$!
               sleep 8
               ./test_tray --gtest_color=yes --gtest_output=xml:test_results.xml

tests/unit/test_tray.cpp

@@ -327,7 +327,7 @@ TEST_F(TrayTest, TestNotificationCallback) {
   }
 #endif
 
-  auto notification_callback = []() {
+  static auto notification_callback = []() {
     // Callback would be invoked by user interaction
   };