PyPySide: replace the __signature__ attribute by get_signature()

In PyPy, types cannot simply be patched. It would be
quite some effort to derive extra heap types for that.

Instead, we use `get_signature()` for all tests, which
has the same effect.

Task-number: PYSIDE-535
Change-Id: I8d9e4adcfc33231d0cd96260feaf2b205bef9a18
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

1 files changed, 7 insertions, 1 deletions

diff --git a/sources/shiboken6/tests/otherbinding/signature_test.py b/sources/shiboken6/tests/otherbinding/signature_test.py
index 9f94edd34..3160ce5fa 100644
--- a/sources/shiboken6/tests/otherbinding/signature_test.py
+++ b/sources/shiboken6/tests/otherbinding/signature_test.py
@@ -43,12 +43,18 @@ init_paths()
 from other import OtherObjectType
 from shiboken_test_helper import objectFullname
 
+from shiboken6 import Shiboken
+_init_pyside_extension()   # trigger bootstrap
+
+from shibokensupport.signature import get_signature
+
+
 class SignatureTest(unittest.TestCase):
 
     # Check if the argument of 'OtherObjectType::enumAsInt(SampleNamespace::SomeClass::PublicScopedEnum value)'
     # has the correct representation
     def testNamespaceFromOtherModule(self):
-        argType = OtherObjectType.enumAsInt.__signature__.parameters['value'].annotation
+        argType = get_signature(OtherObjectType.enumAsInt).parameters['value'].annotation
         self.assertEqual(objectFullname(argType), 'sample.SampleNamespace.SomeClass.PublicScopedEnum')
 
 if __name__ == '__main__':