Add a check step to the GitHub actions

Author: aalex

.github/workflows/macos-build.yml

@@ -28,3 +28,11 @@ jobs:
       run: |
         export PATH="$(brew --prefix qt)/bin:$PATH"
         make -j$(sysctl -n hw.logicalcpu)
+
+    - name: Build and run tests
+      run: |
+        export PATH="($brew --prefix=qt)/bin:$PATH"
+        cd tests/
+        qmake6 tests.pro
+        make -j$(sysctl -n hw.logicalcpu)
+        QT_QPA_PLATFORM=offscreen make check

.github/workflows/ubuntu-build.yml

@@ -34,5 +34,9 @@ jobs:
     - name: Build
       run: make -j$(nproc)
 
-    - name: Run tests
-      run: make check || true
+    - name: Build and run tests
+      run: |
+        cd tests/
+        qmake6 tests.pro
+        make -j$(nproc)
+        QT_QPA_PLATFORM=offscreen make check

.github/workflows/windows-build.yml

@@ -30,3 +30,13 @@ jobs:
 
     - name: Build
       run: mingw32-make -j4
+
+    - name: Build and run tests
+      run: |
+        cd tests/
+        qmake6 tests.pro
+        mingw32-make -j4
+        mingw32-make check
+      env:
+        QT_QPA_PLATFORM: offscreen
+