Add system property to start tests fullscreen in ci.

Author: mfl28

build.gradle

@@ -61,6 +61,7 @@ dependencies {
 
 javafx {
     version = '14'
+    // javafx.swing necessary for screenshot capturing in tests
     modules = ['javafx.controls', 'javafx.swing']
 }
 
@@ -80,7 +81,7 @@ test {
 ci {
     githubactions {
         test {
-            jvmArgs.remove('-Dprim.forceGPU=true')
+            systemProperty "fullScreenTests", true
         }
     }
 }

src/test/java/boundingboxeditor/BoundingBoxEditorTestBase.java

@@ -54,6 +54,7 @@ public class BoundingBoxEditorTestBase {
     private static final String STYLESHEET_PATH = "/stylesheets/css/styles.css";
     private static final Path SCREENSHOT_PATH = Paths.get("").toAbsolutePath().resolve(
             "build/test-screenshots/");
+    private static final String FULL_SCREEN_TESTS_SYSTEM_PROPERTY_NAME = "fullScreenTests";
     protected static int TIMEOUT_DURATION_IN_SEC = 30;
     protected static String TEST_IMAGE_FOLDER_PATH_1 = "/testimages/1";
     protected static String TEST_IMAGE_FOLDER_PATH_2 = "/testimages/2";
@@ -169,6 +170,10 @@ protected void onStart(Stage stage) {
         // To make sure that the window is on top of all other windows at the start.
         stage.setAlwaysOnTop(true);
 
+        if(Boolean.getBoolean(FULL_SCREEN_TESTS_SYSTEM_PROPERTY_NAME)) {
+            stage.setMaximized(true);
+        }
+
         final Scene scene = createSceneFromParent(mainView);
         scene.getStylesheets().add(getClass().getResource(STYLESHEET_PATH).toExternalForm());