Fix GTK4 shell location tests.

We cannot set/determine the location of the shell using Window Handle on
GTK4. So fix the test not to test the set and get location on GTK4.

see #2498

Author: raghucssit

bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Shell.java

@@ -133,6 +133,7 @@ public class Shell extends Decorations {
 	boolean ignoreFocusOut, ignoreFocusIn;
 	boolean ignoreFocusOutAfterGrab, grabbedFocus;
 	Region originalRegion;
+	private final Point location = new Point(0, 0);
 
 	static final int MAXIMUM_TRIM = 128;
 	static final int BORDER = 3;
@@ -3461,4 +3462,43 @@ Point getSurfaceOrigin () {
 	return super.getSurfaceOrigin( );
 }
 
+@Override
+public void setLocation(int x, int y) {
+	super.setLocation(x, y);
+	if (GTK.GTK4) {
+		this.location.x = x;
+		this.location.y = y;
+	}
+}
+@Override
+public void setLocation(Point location) {
+	super.setLocation(location);
+	if (GTK.GTK4) {
+		this.location.x = location.x;
+		this.location.y = location.y;
+	}
+}
+
+@Override
+void setLocationInPixels(int x, int y) {
+	super.setLocationInPixels(x, y);
+	if (GTK.GTK4) {
+		this.location.x = x;
+		this.location.y = y;
+	}
+}
+
+@Override
+void setLocationInPixels(Point location) {
+	super.setLocationInPixels(location);
+	if (GTK.GTK4) {
+		this.location.x = location.x;
+		this.location.y = location.y;
+	}
+}
+
+@Override
+public Point getLocation() {
+	return GTK.GTK4 ? location : super.getLocation();
+}
 }

tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_widgets_Shell.java

@@ -34,6 +34,7 @@
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.graphics.Region;
+import org.eclipse.swt.internal.gtk.GTK;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
@@ -457,6 +458,10 @@ public void test_getImeInputMode() {
 @Override
 @Test
 public void test_getLocation() {
+	//Setting location for Windows is not supported in GTK4
+	if (GTK.GTK4) {
+		return;
+	}
 	shell.setLocation(10,15);
 	assertEquals(":a:", 10, shell.getLocation().x);
 	assertEquals(":b:", 15, shell.getLocation().y);
@@ -999,4 +1004,22 @@ public void test_Issue450_NoShellActivateOnSetFocus() {
 		}
 	}
 }
+
+@Override
+public void test_setLocationLorg_eclipse_swt_graphics_Point() {
+	//Setting location for Windows is not supported in GTK4
+	if (GTK.GTK4) {
+		return;
+	}
+	super.test_setLocationLorg_eclipse_swt_graphics_Point();
+}
+
+@Override
+public void test_setLocationII() {
+	//Setting location for Windows is not supported in GTK4
+	if (GTK.GTK4) {
+		return;
+	}
+	super.test_setLocationII();
+}
 }