upstream/ipython Files · IPython/core/tests/test_events.py

Catch errors after our then()s, instead of in parallel with them (this missing exceptions)...

Catch errors after our then()s, instead of in parallel with them (this missing exceptions) When an error is thrown in a then() success handler, it doesn't call the same then()'s error handler. I also made all of the utils.reject handlers verbose to aid in debugging.

Nathaniel J. Smith - - Load All Authors

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             test_events.py
        
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      import unittest

      try:  # Python 3.3 +

          from unittest.mock import Mock

      except ImportError:

          from mock import Mock

      from IPython.core import events

      import IPython.testing.tools as tt

      def ping_received():

          pass

      class CallbackTests(unittest.TestCase):

          def setUp(self):

              self.em = events.EventManager(get_ipython(), {'ping_received': ping_received})

          def test_register_unregister(self):

              cb = Mock()

              self.em.register('ping_received', cb)        

              self.em.trigger('ping_received')

              self.assertEqual(cb.call_count, 1)

              self.em.unregister('ping_received', cb)

              self.em.trigger('ping_received')

              self.assertEqual(cb.call_count, 1)

          def test_cb_error(self):

              cb = Mock(side_effect=ValueError)

              self.em.register('ping_received', cb)

              with tt.AssertPrints("Error in callback"):

                  self.em.trigger('ping_received')

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				import unittest
				try: # Python 3.3 +
				from unittest.mock import Mock
				except ImportError:
				from mock import Mock

				from IPython.core import events
				import IPython.testing.tools as tt

				def ping_received():
				pass

				class CallbackTests(unittest.TestCase):
				def setUp(self):
				self.em = events.EventManager(get_ipython(), {'ping_received': ping_received})

				def test_register_unregister(self):
				cb = Mock()

				self.em.register('ping_received', cb)
				self.em.trigger('ping_received')
				self.assertEqual(cb.call_count, 1)

				self.em.unregister('ping_received', cb)
				self.em.trigger('ping_received')
				self.assertEqual(cb.call_count, 1)

				def test_cb_error(self):
				cb = Mock(side_effect=ValueError)
				self.em.register('ping_received', cb)
				with tt.AssertPrints("Error in callback"):
				self.em.trigger('ping_received')