Drop Python 2.5 support + unicode UCS4 builds support + add more tests

Cython/Debugger/Tests/test_libpython_in_gdb.py

+# -*- coding: UTF-8 -*-
+
+"""
+Test libpython.py. This is already partly tested by test_libcython_in_gdb and 
+Lib/test/test_gdb.py in the Python source. These tests are run in gdb and
+called from test_libcython_in_gdb.main()
+"""
+
+import os
+import sys
+
+import gdb
+
+from Cython.Debugger import libcython
+from Cython.Debugger import libpython
+
+import test_libcython_in_gdb
+from test_libcython_in_gdb import _debug, inferior_python_version
+
+
+class TestPrettyPrinters(test_libcython_in_gdb.DebugTestCase):
+    """
+    Test whether types of Python objects are correctly inferred and that
+    the right libpython.PySomeTypeObjectPtr classes are instantiated.
+    
+    Also test whether values are appropriately formatted (don't be too 
+    laborious as Lib/test/test_gdb.py already covers this extensively).
+    
+    Don't take care of decreffing newly allocated objects as a new 
+    interpreter is started for every test anyway.
+    """
+    
+    def setUp(self):
+        super(TestPrettyPrinters, self).setUp()
+        self.break_and_run('b = c = d = 0')
+    
+    def get_pyobject(self, code):
+        value = gdb.parse_and_eval(code)
+        assert libpython.pointervalue(value) != 0
+        return value
+    
+    def pyobject_fromcode(self, code, gdbvar=None):
+        if gdbvar is not None:
+            d = {'varname':gdbvar, 'code':code}
+            gdb.execute('set $%(varname)s = %(code)s' % d)
+            code = '$' + gdbvar
+            
+        return libpython.PyObjectPtr.from_pyobject_ptr(self.get_pyobject(code))
+    
+    def get_repr(self, pyobject):
+        return pyobject.get_truncated_repr(libpython.MAX_OUTPUT_LEN)
+    
+    def alloc_bytestring(self, string, gdbvar=None):
+        if inferior_python_version < (3, 0):
+            funcname = 'PyString_FromString'
+        else:
+            funcname = 'PyBytes_FromString'
+        
+        assert '"' not in string
+        
+        # ensure double quotes
+        code = '(PyObject *) %s("%s")' % (funcname, string)
+        return self.pyobject_fromcode(code, gdbvar=gdbvar)
+        
+    def alloc_unicodestring(self, string, gdbvar=None):
+        self.alloc_bytestring(string.encode('UTF-8'), gdbvar='_temp')
+        
+        postfix = libpython.get_inferior_unicode_postfix()
+        funcname = 'PyUnicode%s_FromEncodedObject' % (postfix,)
+        
+        return self.pyobject_fromcode(
+            '(PyObject *) %s($_temp, "UTF-8", "strict")' % funcname, 
+            gdbvar=gdbvar)
+        
+    def test_bytestring(self):
+        bytestring = self.alloc_bytestring("spam")
+        
+        if inferior_python_version < (3, 0):
+            bytestring_class = libpython.PyStringObjectPtr
+            expected = repr("spam")
+        else:
+            bytestring_class = libpython.PyBytesObjectPtr
+            expected = "b'spam'"
+        
+        self.assertEqual(type(bytestring), bytestring_class)
+        self.assertEqual(self.get_repr(bytestring), expected)
+    
+    def test_unicode(self):
+        unicode_string = self.alloc_unicodestring(u"spam ἄλφα")
+        
+        expected = "'spam ἄλφα'"
+        if inferior_python_version < (3, 0):
+            expected = 'u' + expected
+        
+        self.assertEqual(type(unicode_string), libpython.PyUnicodeObjectPtr)
+        self.assertEqual(self.get_repr(unicode_string), expected)
+    
+    def test_int(self):
+        if inferior_python_version < (3, 0):
+            intval = self.pyobject_fromcode('PyInt_FromLong(100)')
+            self.assertEqual(type(intval), libpython.PyIntObjectPtr)
+            self.assertEqual(self.get_repr(intval), '100')
+    
+    def test_long(self):
+        longval = self.pyobject_fromcode('PyLong_FromLong(200)', 
+                                         gdbvar='longval')
+        assert gdb.parse_and_eval('$longval->ob_type == &PyLong_Type')
+        
+        self.assertEqual(type(longval), libpython.PyLongObjectPtr)
+        self.assertEqual(self.get_repr(longval), '200')
+        
+    def test_frame_type(self):
+        frame = self.pyobject_fromcode('PyEval_GetFrame()')
+        
+        self.assertEqual(type(frame), libpython.PyFrameObjectPtr)
+
+    
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