1 files changed, 48 insertions, 0 deletions
diff --git a/tests/functional/u/unused/unused_argument.py b/tests/functional/u/unused/unused_argument.py
new file mode 100644
index 000000000..013d4b3e5
--- /dev/null
+++ b/tests/functional/u/unused/unused_argument.py
@@ -0,0 +1,48 @@
+# pylint: disable=missing-docstring,too-few-public-methods, useless-object-inheritance
+
+def test_unused(first, second, _not_used): # [unused-argument, unused-argument]
+    pass
+
+
+def test_prefixed_with_ignored(first, ignored_second):
+    first()
+
+
+def test_prefixed_with_unused(first, unused_second):
+    first()
+
+# for Sub.inherited, only the warning for "aay" is desired.
+# The warnings for "aab" and "aac"  are most likely false positives though,
+# because there could be another subclass that overrides the same method and does
+# use the arguments (eg Sub2)
+
+
+class Base(object):
+    "parent"
+    def inherited(self, aaa, aab, aac):
+        "abstract method"
+        raise NotImplementedError
+
+class Sub(Base):
+    "child 1"
+    def inherited(self, aaa, aab, aac):
+        "overridden method, though don't use every argument"
+        return aaa
+
+    def newmethod(self, aax, aay): # [unused-argument]
+        "another method, warning for aay desired"
+        return self, aax
+
+class Sub2(Base):
+    "child 1"
+
+    def inherited(self, aaa, aab, aac):
+        "overridden method, use every argument"
+        return aaa + aab + aac
+
+def metadata_from_dict(key):
+    """
+    Should not raise unused-argument message because key is
+    used inside comprehension dict
+    """
+    return {key: str(value) for key, value in key.items()}