1 files changed, 68 insertions, 0 deletions
diff --git a/sources/pyside6/tests/pysidetest/qapp_like_a_macro_test.py b/sources/pyside6/tests/pysidetest/qapp_like_a_macro_test.py
new file mode 100644
index 000000000..2a3f34014
--- /dev/null
+++ b/sources/pyside6/tests/pysidetest/qapp_like_a_macro_test.py
@@ -0,0 +1,68 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+import PySide6
+
+# This test tests the new "macro" feature of qApp.
+# It also uses the qApp variable to finish the instance and start over.
+
+# Note: this test makes qapplication_singleton_test.py obsolete.
+
+
+class qAppMacroTest(unittest.TestCase):
+    _test_1093_is_first = True
+
+    def test_qApp_is_like_a_macro_and_can_restart(self):
+        self._test_1093_is_first = False
+        from PySide6 import QtCore
+        try:
+            from PySide6 import QtGui, QtWidgets
+        except ImportError:
+            QtWidgets = QtGui = QtCore
+        # qApp is in the builtins
+        self.assertEqual(bool(qApp), False)
+        # and the type is None
+        self.assertTrue(qApp is None)
+        # now we create an application for all cases
+        classes = (QtCore.QCoreApplication,
+                   QtGui.QGuiApplication,
+                   QtWidgets.QApplication)
+        fil = sys.stderr
+        for klass in classes:
+            print("CREATED", klass([]), file=fil)
+            fil.flush()
+            qApp.shutdown()
+            print("DELETED qApp", qApp, file=fil)
+            fil.flush()
+        # creating without deletion raises:
+        QtCore.QCoreApplication([])
+        with self.assertRaises(RuntimeError):
+            QtCore.QCoreApplication([])
+        self.assertEqual(QtCore.QCoreApplication.instance(), qApp)
+
+    def test_1093(self):
+        # Test that without creating a QApplication staticMetaObject still exists.
+        # Please see https://bugreports.qt.io/browse/PYSIDE-1093 for explanation.
+        # Note: This test must run first, otherwise we would be mislead!
+        assert self._test_1093_is_first
+        from PySide6 import QtCore
+        self.assertTrue(QtCore.QObject.staticMetaObject is not None)
+        app = QtCore.QCoreApplication.instance()
+        self.assertTrue(QtCore.QObject.staticMetaObject is not None)
+        if app is None:
+            app = QtCore.QCoreApplication([])
+        self.assertTrue(QtCore.QObject.staticMetaObject is not None)
+        qApp.shutdown()
+
+
+if __name__ == '__main__':
+    unittest.main()