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"""Test trait types of the widget packages."""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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from unittest import TestCase
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from IPython.utils.traitlets import HasTraits
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from traitlets.tests.test_traitlets import TraitTestBase
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from IPython.html.widgets import Color, EventfulDict, EventfulList
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class ColorTrait(HasTraits):
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value = Color("black")
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class TestColor(TraitTestBase):
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obj = ColorTrait()
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_good_values = ["blue", "#AA0", "#FFFFFF"]
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_bad_values = ["vanilla", "blues"]
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class TestEventful(TestCase):
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def test_list(self):
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"""Does the EventfulList work?"""
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event_cache = []
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class A(HasTraits):
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x = EventfulList([c for c in 'abc'])
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a = A()
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a.x.on_events(lambda i, x: event_cache.append('insert'), \
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lambda i, x: event_cache.append('set'), \
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lambda i: event_cache.append('del'), \
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lambda: event_cache.append('reverse'), \
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lambda *p, **k: event_cache.append('sort'))
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a.x.remove('c')
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# ab
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a.x.insert(0, 'z')
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# zab
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del a.x[1]
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# zb
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a.x.reverse()
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# bz
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a.x[1] = 'o'
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# bo
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a.x.append('a')
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# boa
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a.x.sort()
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# abo
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# Were the correct events captured?
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self.assertEqual(event_cache, ['del', 'insert', 'del', 'reverse', 'set', 'set', 'sort'])
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# Is the output correct?
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self.assertEqual(a.x, [c for c in 'abo'])
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def test_dict(self):
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"""Does the EventfulDict work?"""
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event_cache = []
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class A(HasTraits):
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x = EventfulDict({c: c for c in 'abc'})
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a = A()
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a.x.on_events(lambda k, v: event_cache.append('add'), \
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lambda k, v: event_cache.append('set'), \
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lambda k: event_cache.append('del'))
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del a.x['c']
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# ab
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a.x['z'] = 1
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# abz
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a.x['z'] = 'z'
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# abz
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a.x.pop('a')
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# bz
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# Were the correct events captured?
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self.assertEqual(event_cache, ['del', 'add', 'set', 'del'])
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# Is the output correct?
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self.assertEqual(a.x, {c: c for c in 'bz'})
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