diff --git a/testing/code/test_assertionnew.py b/testing/code/test_assertionnew.py
deleted file mode 100644
index 8511f8125..000000000
--- a/testing/code/test_assertionnew.py
+++ /dev/null
@@ -1,44 +0,0 @@
-import sys
-
-import py
-from py._code._assertionnew import interpret
-
-
-def getframe():
-    """Return the frame of the caller as a py.code.Frame object"""
-    return py.code.Frame(sys._getframe(1))
-
-
-def pytest_funcarg__hook(request):
-    class MockHook(object):
-        def __init__(self):
-            self.called = False
-            self.args = tuple()
-            self.kwargs = dict()
-
-        def __call__(self, op, left, right):
-            self.called = True
-            self.op = op
-            self.left = left
-            self.right = right
-    return MockHook()
-
-
-def test_pytest_assert_compare_called(monkeypatch, hook):
-    monkeypatch.setattr(py._plugin.pytest_assertion,
-                        'pytest_assert_compare', hook)
-    interpret('assert 0 == 1', getframe())
-    assert hook.called
-
-
-def test_pytest_assert_compare_args(monkeypatch, hook):
-    print hook.called
-    monkeypatch.setattr(py._plugin.pytest_assertion,
-                        'pytest_assert_compare', hook)
-    interpret('assert [0, 1] == [0, 2]', getframe())
-    print hook.called
-    print hook.left
-    print hook.right
-    assert hook.op == '=='
-    assert hook.left == [0, 1]
-    assert hook.right == [0, 2]
diff --git a/testing/plugin/test_pytest_assertion.py b/testing/plugin/test_pytest_assertion.py
index 9ab007f29..596de0050 100644
--- a/testing/plugin/test_pytest_assertion.py
+++ b/testing/plugin/test_pytest_assertion.py
@@ -1,7 +1,30 @@
+import sys
+
 import py
+from py._code._assertionnew import interpret
 import py._plugin.pytest_assertion as plugin
 
 
+def getframe():
+    """Return the frame of the caller as a py.code.Frame object"""
+    return py.code.Frame(sys._getframe(1))
+
+
+def pytest_funcarg__hook(request):
+    class MockHook(object):
+        def __init__(self):
+            self.called = False
+            self.args = tuple()
+            self.kwargs = dict()
+
+        def __call__(self, op, left, right):
+            self.called = True
+            self.op = op
+            self.left = left
+            self.right = right
+    return MockHook()
+
+
 def test_functional(testdir):
     testdir.makepyfile("""
         def test_hello():
@@ -54,7 +77,27 @@ def test_traceback_failure(testdir):
     ])
 
 
-class Test_pytest_assert_compare:
+def test_pytest_assert_compare_called(monkeypatch, hook):
+    monkeypatch.setattr(py._plugin.pytest_assertion,
+                        'pytest_assert_compare', hook)
+    interpret('assert 0 == 1', getframe())
+    assert hook.called
+
+
+def test_pytest_assert_compare_args(monkeypatch, hook):
+    print hook.called
+    monkeypatch.setattr(py._plugin.pytest_assertion,
+                        'pytest_assert_compare', hook)
+    interpret('assert [0, 1] == [0, 2]', getframe())
+    print hook.called
+    print hook.left
+    print hook.right
+    assert hook.op == '=='
+    assert hook.left == [0, 1]
+    assert hook.right == [0, 2]
+
+
+class TestAssertCompare:
     def test_different_types(self):
         assert plugin.pytest_assert_compare('==', [0, 1], 'foo') is None