Fix and improve pygame.Window tests

Author: ankith26

src_c/window.c

@@ -911,6 +911,11 @@ window_get_opengl(pgWindowObject *self, void *v)
         hasGL = self->context != NULL;
     }
     else {
+        /* This is not a reliable way to test that OPENGL was requested by the
+         * user. SDL can implicitly create and use an opengl context in some
+         * platforms and in that case hasGL=1 even when the user didn't
+         * request for it. As borrowed windows are deprecated functionality we
+         * can ignore this issue. */
         hasGL = (SDL_GetWindowFlags(self->_win) & SDL_WINDOW_OPENGL) > 0;
     }
     return PyBool_FromLong(hasGL);

test/window_test.py

@@ -150,8 +150,9 @@ def test_size(self):
         self.win.size = (640, 480)
 
     def test_position(self):
-        self.win.position = (12, 34)
-        self.assertTupleEqual(self.win.position, (12, 34))
+        new_pos = (self.win.position[0] + 20, self.win.position[1] + 10)
+        self.win.position = new_pos
+        self.assertTupleEqual(self.win.position, new_pos)
 
         self.win.position = pygame.WINDOWPOS_CENTERED
 
@@ -323,13 +324,13 @@ def test_window_object_repr(self):
         pygame.init()
 
     def test_from_display_module(self):
-        pygame.display.set_mode((640, 480))
+        surf = pygame.display.set_mode((640, 480))
 
         win1 = Window.from_display_module()
         win2 = Window.from_display_module()
 
         self.assertIs(win1, win2)
-        self.assertFalse(win1.opengl)
+        self.assertIs(win1.get_surface(), surf)
 
         pygame.display.quit()
         pygame.init()