1 files changed, 100 insertions, 0 deletions
diff --git a/pylint/test/functional/assigning_non_slot.py b/pylint/test/functional/assigning_non_slot.py
new file mode 100644
index 0000000..b80c32e
--- /dev/null
+++ b/pylint/test/functional/assigning_non_slot.py
@@ -0,0 +1,100 @@
+""" Checks assigning attributes not found in class slots
+will trigger assigning-non-slot warning.
+"""
+# pylint: disable=too-few-public-methods, no-init, missing-docstring, no-absolute-import
+from collections import deque
+
+__revision__ = 0
+
+class Empty(object):
+    """ empty """
+
+class Bad(object):
+    """ missing not in slots. """
+
+    __slots__ = ['member']
+
+    def __init__(self):
+        self.missing = 42 # [assigning-non-slot]
+
+class Bad2(object):
+    """ missing not in slots """
+    __slots__ = [deque.__name__, 'member']
+
+    def __init__(self):
+        self.deque = 42
+        self.missing = 42 # [assigning-non-slot]
+
+class Bad3(Bad):
+    """ missing not found in slots """
+
+    __slots__ = ['component']
+
+    def __init__(self):
+        self.component = 42
+        self.member = 24
+        self.missing = 42 # [assigning-non-slot]
+        super(Bad3, self).__init__()
+
+class Good(Empty):
+    """ missing not in slots, but Empty doesn't
+    specify __slots__.
+    """
+    __slots__ = ['a']
+
+    def __init__(self):
+        self.missing = 42
+
+class Good2(object):
+    """ Using __dict__ in slots will be safe. """
+
+    __slots__ = ['__dict__', 'comp']
+
+    def __init__(self):
+        self.comp = 4
+        self.missing = 5
+
+class PropertyGood(object):
+    """ Using properties is safe. """
+
+    __slots__ = ['tmp', '_value']
+
+    @property
+    def test(self):
+        return self._value
+
+    @test.setter
+    def test(self, value):
+        # pylint: disable=attribute-defined-outside-init
+        self._value = value
+
+    def __init__(self):
+        self.test = 42
+
+class PropertyGood2(object):
+    """ Using properties in the body of the class is safe. """
+    __slots__ = ['_value']
+
+    def _getter(self):
+        return self._value
+
+    def _setter(self, value):
+        # pylint: disable=attribute-defined-outside-init
+        self._value = value
+
+    test = property(_getter, _setter)
+
+    def __init__(self):
+        self.test = 24
+
+class UnicodeSlots(object):
+    """Using unicode objects in __slots__ is okay.
+
+    On Python 3.3 onward, u'' is equivalent to '',
+    so this test should be safe for both versions.
+    """
+    __slots__ = (u'first', u'second')
+
+    def __init__(self):
+        self.first = 42
+        self.second = 24