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import unittest
from context import Context
class ContextTests(unittest.TestCase):
def test_converts_to_empty_dict_initially(self):
ctx = Context()
self.assertEqual(ctx.as_dict(), {})
def test_set_item(self):
ctx = Context()
ctx["foo"] = "bar"
self.assertEqual(ctx["foo"], "bar")
def test_does_not_contain_item(self):
ctx = Context()
self.assertFalse("foo" in ctx)
def test_no_longer_contains_item(self):
ctx = Context()
ctx["foo"] = "bar"
del ctx["foo"]
self.assertFalse("foo" in ctx)
def test_contains_item(self):
ctx = Context()
ctx["foo"] = "bar"
self.assertTrue("foo" in ctx)
def test_get_returns_default_if_item_does_not_exist(self):
ctx = Context()
self.assertEqual(ctx.get("foo"), None)
def test_get_returns_specified_default_if_item_does_not_exist(self):
ctx = Context()
self.assertEqual(ctx.get("foo", "bar"), "bar")
def test_get_returns_value_if_item_exists(self):
ctx = Context()
ctx["foo"] = "bar"
self.assertEqual(ctx.get("foo", "yo"), "bar")
unittest.main()
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