Uploaded Test files

venv/Lib/site-packages/ipywidgets/widgets/tests/utils.py

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+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+from ipykernel.comm import Comm
+from ipywidgets import Widget
+
+class DummyComm(Comm):
+    comm_id = 'a-b-c-d'
+    kernel = 'Truthy'
+
+    def __init__(self, *args, **kwargs):
+        super(DummyComm, self).__init__(*args, **kwargs)
+        self.messages = []
+
+    def open(self, *args, **kwargs):
+        pass
+
+    def send(self, *args, **kwargs):
+        self.messages.append((args, kwargs))
+
+    def close(self, *args, **kwargs):
+        pass
+
+_widget_attrs = {}
+undefined = object()
+
+def setup_test_comm():
+    _widget_attrs['_comm_default'] = getattr(Widget, '_comm_default', undefined)
+    Widget._comm_default = lambda self: DummyComm()
+    _widget_attrs['_ipython_display_'] = Widget._ipython_display_
+    def raise_not_implemented(*args, **kwargs):
+        raise NotImplementedError()
+    Widget._ipython_display_ = raise_not_implemented
+
+def teardown_test_comm():
+    for attr, value in _widget_attrs.items():
+        if value is undefined:
+            delattr(Widget, attr)
+        else:
+            setattr(Widget, attr, value)
+    _widget_attrs.clear()
+
+def setup():
+    setup_test_comm()
+
+def teardown():
+    teardown_test_comm()