Create a function existence registrymaya1

With the signature module, it is now a straight forward task
to generate a registry of all known function signatures.
We check that these signatures all exist.

One file contains all signatures for one platform and version.

The test is only activated when run in the CI system.
An initial call creates the expected file as output and raises
an error. The result can then be picked up from the error log
and added to the repository.

Done: linux2 5.6.4
Done: darwin 5.6.4
Done: win32 5.6.4

Task-number: PYSIDE-510
Change-Id: I4f406cf72d25fdd2336814f6f20129079b8be54f
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/sources/pyside2/tests/registry/existence_test.py b/sources/pyside2/tests/registry/existence_test.py
new file mode 100644
index 000000000..2d9711d9e
--- /dev/null
+++ b/sources/pyside2/tests/registry/existence_test.py
@@ -0,0 +1,108 @@
+#############################################################################
+##
+## Copyright (C) 2017 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of PySide2.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 3 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL3 included in the
+## packaging of this file. Please review the following information to
+## ensure the GNU Lesser General Public License version 3 requirements
+## will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 2.0 or (at your option) the GNU General
+## Public license version 3 or any later version approved by the KDE Free
+## Qt Foundation. The licenses are as published by the Free Software
+## Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-2.0.html and
+## https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+from __future__ import print_function, absolute_import
+
+import os
+import sys
+import unittest
+import warnings
+from init_platform import enum_all, generate_all, is_ci, outname
+from util import isolate_warnings, check_warnings
+from PySide2 import *
+
+refmodule_name = outname[:-3] # no .py
+
+sys.path.insert(0, os.path.dirname(__file__))
+try:
+    exec("import {} as sig_exists".format(refmodule_name))
+    print("found:", refmodule_name)
+    have_refmodule = True
+except ImportError:
+    print("*** not found:", refmodule_name)
+    have_refmodule = False
+
+@unittest.skipIf(not have_refmodule,
+                 "not activated for this platform or version")
+class TestSignaturesExists(unittest.TestCase):
+    """
+    This is the current simple attempt to support a signature self test.
+    You can activate it for your platform by supplying your own reference
+    file. Simply run init_platform.py and add the generated file to the
+    repository.
+    """
+    def test_signatures(self):
+        found_sigs = enum_all()
+        with isolate_warnings():
+            for key, value in sig_exists.dict.items():
+                if key not in found_sigs:
+                    warnings.warn("missing key: '{}'".format(key), RuntimeWarning)
+                elif isinstance(value, list) and len(value) != len(found_sigs[key]):
+                    warnings.warn("different sig length: '{}'".format(key), RuntimeWarning)
+            if is_ci and check_warnings():
+                raise RuntimeError("There are errors, see above.")
+
+    def test_error_is_raised(self):
+        found_sigs = enum_all()
+        # make sure that errors are actually raised
+        found_sigs.pop(list(found_sigs.keys())[42])
+        with isolate_warnings():
+            for key, value in sig_exists.dict.items():
+                if key not in found_sigs:
+                    warnings.warn("ignore missing key: '{}'".format(key), RuntimeWarning)
+                elif isinstance(value, list) and len(value) != len(found_sigs[key]):
+                    warnings.warn("ignore different sig length: '{}'".format(key), RuntimeWarning)
+            self.assertTrue(check_warnings())
+
+if not have_refmodule and is_ci:
+    class TestFor_CI_Init(unittest.TestCase):
+        """
+        This helper class generates the reference file for CI.
+        It creates an output listing that can be used to check
+        the result back in.
+        """
+        fname = generate_all()
+        print("BEGIN", fname, file=sys.stderr)
+        with open(fname) as f:
+            print(f.read(), file=sys.stderr)
+        print("END", fname, file=sys.stderr)
+        raise RuntimeError("This is the initial call. You should check this file in.")
+
+if __name__ == '__main__':
+    unittest.main()