[gtk-doc] Add tests for function pointer vars.

[Stefan Sauer <stefkost src gnome org>]

commit 93a937ee4856bb1e0744b5273eb9fdfb3d48c6ef
Author: Stefan Sauer <ensonic users sf net>
Date:   Sat Feb 2 17:22:49 2019 +0100

    Add tests for function pointer vars.

 tests/scan.py | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/tests/scan.py b/tests/scan.py
index 5632464..89af154 100755
--- a/tests/scan.py
+++ b/tests/scan.py
@@ -580,6 +580,12 @@ class ScanHeaderContentUserFunction(ScanHeaderContentTestCase):
             header.splitlines(keepends=True))
         self.assertDecl('func', 'void', 'int a', slist)
 
+    @parameterized.expand([('void', 'void'), ('const_int', 'const int')])
+    def test_FindsFunctionPointerVar(self, _, ret_type):
+        header = '%s (*func)();' % ret_type
+        slist, doc_comments = self.scanHeaderContent([header])
+        self.assertDecl('func', ret_type, '', slist)
+
 
 class ScanHeaderContentVariabless(ScanHeaderContentTestCase):
     """Test parsing of variable declarations."""