add mocked integrationtest for the deprecationwarning of makeitem

testing/python/test_deprecations.py

@@ -0,0 +1,22 @@
+import pytest
+
+from _pytest.python import PyCollector
+
+
+class PyCollectorMock(PyCollector):
+    """evil hack"""
+
+    def __init__(self):
+        self.called = False
+
+    def _makeitem(self, *k):
+        """hack to disable the actual behaviour"""
+        self.called = True
+
+
+def test_pycollector_makeitem_is_deprecated():
+
+    collector = PyCollectorMock()
+    with pytest.deprecated_call():
+        collector.makeitem('foo', 'bar')
+    assert collector.called