1 files changed, 147 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_code.py b/lib/python2.7/test/test_code.py
new file mode 100644
index 0000000..97adf59
--- /dev/null
+++ b/lib/python2.7/test/test_code.py
@@ -0,0 +1,147 @@
+"""This module includes tests of the code object representation.
+
+>>> def f(x):
+...     def g(y):
+...         return x + y
+...     return g
+...
+
+>>> dump(f.func_code)
+name: f
+argcount: 1
+names: ()
+varnames: ('x', 'g')
+cellvars: ('x',)
+freevars: ()
+nlocals: 2
+flags: 3
+consts: ('None', '<code object g>')
+
+>>> dump(f(4).func_code)
+name: g
+argcount: 1
+names: ()
+varnames: ('y',)
+cellvars: ()
+freevars: ('x',)
+nlocals: 1
+flags: 19
+consts: ('None',)
+
+>>> def h(x, y):
+...     a = x + y
+...     b = x - y
+...     c = a * b
+...     return c
+...
+>>> dump(h.func_code)
+name: h
+argcount: 2
+names: ()
+varnames: ('x', 'y', 'a', 'b', 'c')
+cellvars: ()
+freevars: ()
+nlocals: 5
+flags: 67
+consts: ('None',)
+
+>>> def attrs(obj):
+...     print obj.attr1
+...     print obj.attr2
+...     print obj.attr3
+
+>>> dump(attrs.func_code)
+name: attrs
+argcount: 1
+names: ('attr1', 'attr2', 'attr3')
+varnames: ('obj',)
+cellvars: ()
+freevars: ()
+nlocals: 1
+flags: 67
+consts: ('None',)
+
+>>> def optimize_away():
+...     'doc string'
+...     'not a docstring'
+...     53
+...     53L
+
+>>> dump(optimize_away.func_code)
+name: optimize_away
+argcount: 0
+names: ()
+varnames: ()
+cellvars: ()
+freevars: ()
+nlocals: 0
+flags: 67
+consts: ("'doc string'", 'None')
+
+"""
+
+import unittest
+import weakref
+import _testcapi
+
+
+def consts(t):
+    """Yield a doctest-safe sequence of object reprs."""
+    for elt in t:
+        r = repr(elt)
+        if r.startswith("<code object"):
+            yield "<code object %s>" % elt.co_name
+        else:
+            yield r
+
+def dump(co):
+    """Print out a text representation of a code object."""
+    for attr in ["name", "argcount", "names", "varnames", "cellvars",
+                 "freevars", "nlocals", "flags"]:
+        print "%s: %s" % (attr, getattr(co, "co_" + attr))
+    print "consts:", tuple(consts(co.co_consts))
+
+
+class CodeTest(unittest.TestCase):
+
+    def test_newempty(self):
+        co = _testcapi.code_newempty("filename", "funcname", 15)
+        self.assertEqual(co.co_filename, "filename")
+        self.assertEqual(co.co_name, "funcname")
+        self.assertEqual(co.co_firstlineno, 15)
+
+
+class CodeWeakRefTest(unittest.TestCase):
+
+    def test_basic(self):
+        # Create a code object in a clean environment so that we know we have
+        # the only reference to it left.
+        namespace = {}
+        exec "def f(): pass" in globals(), namespace
+        f = namespace["f"]
+        del namespace
+
+        self.called = False
+        def callback(code):
+            self.called = True
+
+        # f is now the last reference to the function, and through it, the code
+        # object.  While we hold it, check that we can create a weakref and
+        # deref it.  Then delete it, and check that the callback gets called and
+        # the reference dies.
+        coderef = weakref.ref(f.__code__, callback)
+        self.assertTrue(bool(coderef()))
+        del f
+        self.assertFalse(bool(coderef()))
+        self.assertTrue(self.called)
+
+
+def test_main(verbose=None):
+    from test.test_support import run_doctest, run_unittest
+    from test import test_code
+    run_doctest(test_code, verbose)
+    run_unittest(CodeTest, CodeWeakRefTest)
+
+
+if __name__ == "__main__":
+    test_main()