1 files changed, 34 insertions, 0 deletions
diff --git a/tests/run/append.pyx b/tests/run/append.pyx
index 1976780d5..dcc3fe7c9 100644
--- a/tests/run/append.pyx
+++ b/tests/run/append.pyx
@@ -1,3 +1,5 @@
+cimport cython
+
 class A:
     def append(self, x):
         print u"appending", x
@@ -94,3 +96,35 @@ def method_name():
     'append'
     """
     return [].append.__name__
+
+@cython.test_assert_path_exists(
+    '//PythonCapiCallNode')
+def append_optimized(probably_list):
+    """
+    >>> l = []
+    >>> append_optimized(l)
+    >>> l
+    [1]
+    """
+    probably_list.append(1)
+
+cdef class AppendBug:
+    # https://github.com/cython/cython/issues/4828
+    # if the attribute "append" is found it shouldn't be replaced with
+    # __Pyx_PyObject_Append
+    cdef object append
+    def __init__(self, append):
+        self.append = append
+
+@cython.test_fail_if_path_exists(
+    '//PythonCapiCallNode')
+def specific_attribute(AppendBug a):
+    """
+    >>> def append_to_default_arg(a, arg=[]):
+    ...    arg.append(a)
+    ...    return arg
+    >>> specific_attribute(AppendBug(append_to_default_arg))
+    >>> append_to_default_arg(None)
+    [1, None]
+    """
+    a.append(1)