97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
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# Copyright (c) Jupyter Development Team.
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# Distributed under the terms of the Modified BSD License.
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import inspect
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import warnings
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from unittest import TestCase
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from traitlets import TraitError
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from ipywidgets import Dropdown, SelectionSlider, Select
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class TestDropdown(TestCase):
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def test_construction(self):
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Dropdown()
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def test_deprecation_warning_mapping_options(self):
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter("always")
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# Clearing the internal __warningregistry__ seems to be required for
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# Python 2 (but not for Python 3)
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module = inspect.getmodule(Dropdown)
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getattr(module, '__warningregistry__', {}).clear()
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Dropdown(options={'One': 1, 'Two': 2, 'Three': 3})
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assert len(w) > 0
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assert issubclass(w[-1].category, DeprecationWarning)
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assert "Support for mapping types has been deprecated" in str(w[-1].message)
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class TestSelectionSlider(TestCase):
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def test_construction(self):
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SelectionSlider(options=['a', 'b', 'c'])
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def test_index_trigger(self):
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slider = SelectionSlider(options=['a', 'b', 'c'])
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observations = []
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def f(change):
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observations.append(change.new)
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slider.observe(f, 'index')
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assert slider.index == 0
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slider.options = [4, 5, 6]
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assert slider.index == 0
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assert slider.value == 4
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assert slider.label == '4'
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assert observations == [0]
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class TestSelection(TestCase):
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def test_construction(self):
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select = Select(options=['a', 'b', 'c'])
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def test_index_trigger(self):
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select = Select(options=[1, 2, 3])
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observations = []
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def f(change):
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observations.append(change.new)
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select.observe(f, 'index')
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assert select.index == 0
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select.options = [4, 5, 6]
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assert select.index == 0
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assert select.value == 4
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assert select.label == '4'
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assert observations == [0]
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def test_duplicate(self):
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select = Select(options=['first', 1, 'dup', 'dup'])
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observations = []
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def f(change):
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observations.append(change.new)
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select.observe(f, 'index')
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select.index = 3
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assert select.index == 3
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assert select.value == 'dup'
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assert select.label == 'dup'
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assert observations == [3]
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select.index = 2
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assert select.index == 2
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assert select.value == 'dup'
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assert select.label == 'dup'
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assert observations == [3, 2]
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select.index = 0
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assert select.index == 0
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assert select.value == 'first'
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assert select.label == 'first'
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assert observations == [3, 2, 0]
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# picks the first matching value
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select.value = 'dup'
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assert select.index == 2
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assert select.value == 'dup'
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assert select.label == 'dup'
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assert observations == [3, 2, 0, 2]
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