1 files changed, 65 insertions, 0 deletions
diff --git a/pylint/test/functional/statement_without_effect.py b/pylint/test/functional/statement_without_effect.py
new file mode 100644
index 0000000..b1aaadf
--- /dev/null
+++ b/pylint/test/functional/statement_without_effect.py
@@ -0,0 +1,65 @@
+"""Test for statements without effects."""
+# pylint: disable=too-few-public-methods
+
+# +1:[pointless-string-statement]
+"""inline doc string should use a separated message"""
+
+__revision__ = ''
+
+__revision__  # [pointless-statement]
+
+__revision__ <= 1  # [pointless-statement]
+
+__revision__.lower()
+
+[i for i in __revision__]  # [pointless-statement]
+
+# +1:[pointless-string-statement]
+"""inline doc string should use a separated message"""
+
+
+__revision__.lower();  # [unnecessary-semicolon]
+
+list() and tuple()  # [expression-not-assigned]
+
+def to_be():
+    """return 42"""
+    return "42"
+
+ANSWER = to_be() # ok
+ANSWER == to_be()  # [expression-not-assigned]
+
+to_be() or not to_be()  # [expression-not-assigned]
+to_be().title  # [expression-not-assigned]
+
+GOOD_ATTRIBUTE_DOCSTRING = 42
+"""Module level attribute docstring is fine. """
+
+class ClassLevelAttributeTest(object):
+    """ test attribute docstrings. """
+
+    good_attribute_docstring = 24
+    """ class level attribute docstring is fine either. """
+    second_good_attribute_docstring = 42
+    # Comments are good.
+
+    # empty lines are good, too.
+    """ Still a valid class level attribute docstring. """
+
+    def __init__(self):
+        self.attr = 42
+        """ Good attribute docstring """
+        attr = 24
+        """ Still a good __init__ level attribute docstring. """
+        val = 0
+        for val in range(42):
+            val += attr
+        # +1:[pointless-string-statement]
+        """ Invalid attribute docstring """
+        self.val = val
+
+    def test(self):
+        """ invalid attribute docstrings here. """
+        self.val = 42
+        # +1:[pointless-string-statement]
+        """ this is an invalid attribute docstring. """