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1
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7
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import param
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2
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7
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import pytest
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3
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4
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7
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from panel.io import block_comm
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5
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7
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from panel.layout import Row
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6
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7
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from panel.links import CallbackGenerator
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7
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7
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from panel.widgets import (
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8
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CompositeWidget, Dial, FileDownload, FloatSlider, TextInput,
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9
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Terminal, ToggleGroup, Widget
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10
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)
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11
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7
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from panel.widgets.tables import BaseTable
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12
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7
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from panel.tests.util import check_layoutable_properties
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13
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14
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excluded = (
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15
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BaseTable, CompositeWidget, Dial, FileDownload, ToggleGroup, Terminal
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16
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)
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17
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18
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all_widgets = [
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19
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w for w in param.concrete_descendents(Widget).values()
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20
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if not w.__name__.startswith('_') and not issubclass(w, excluded)
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21
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]
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22
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23
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7
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@pytest.mark.parametrize('widget', all_widgets)
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24
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2
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def test_widget_signature(widget):
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25
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from inspect import signature
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26
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parameters = signature(widget).parameters
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27
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assert len(parameters) == 1
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28
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29
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30
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7
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@pytest.mark.parametrize('widget', all_widgets)
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31
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2
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def test_widget_linkable_params(widget):
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32
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w = widget()
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33
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controls = w.controls(jslink=True)
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34
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layout = Row(w, controls)
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35
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36
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try:
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37
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CallbackGenerator.error = True
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38
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layout.get_root()
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39
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finally:
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40
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CallbackGenerator.error = False
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41
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42
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43
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7
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@pytest.mark.parametrize('widget', all_widgets)
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44
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2
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def test_widget_layout_properties(widget, document, comm):
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45
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w = widget()
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46
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model = w.get_root(document, comm)
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47
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check_layoutable_properties(w, model)
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48
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49
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50
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7
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@pytest.mark.parametrize('widget', all_widgets)
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51
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2
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def test_widget_disabled_properties(widget, document, comm):
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52
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w = widget(disabled=True)
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53
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54
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model = w.get_root(document, comm)
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55
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56
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assert model.disabled == True
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57
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model.disabled = False
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58
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assert model.disabled == False
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59
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60
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61
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7
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@pytest.mark.parametrize('widget', all_widgets)
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62
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2
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def test_widget_clone(widget):
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63
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w = widget()
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64
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clone = w.clone()
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65
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66
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assert ([(k, v) for k, v in sorted(w.param.get_param_values()) if k != 'name'] ==
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67
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[(k, v) for k, v in sorted(clone.param.get_param_values()) if k != 'name'])
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68
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69
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70
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7
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@pytest.mark.parametrize('widget', all_widgets)
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71
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2
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def test_widget_clone_override(widget):
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72
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w = widget()
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73
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clone = w.clone(width=50)
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74
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75
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assert ([(k, v) for k, v in sorted(w.param.get_param_values()) if k not in ['name', 'width']] ==
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76
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[(k, v) for k, v in sorted(clone.param.get_param_values()) if k not in ['name', 'width']])
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77
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assert clone.width == 50
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78
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assert w.width is widget.width
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79
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80
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81
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7
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@pytest.mark.parametrize('widget', all_widgets)
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82
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2
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def test_widget_model_cache_cleanup(widget, document, comm):
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83
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w = widget()
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84
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85
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model = w.get_root(document, comm)
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86
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87
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assert model.ref['id'] in w._models
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88
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assert w._models[model.ref['id']] == (model, None)
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89
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90
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w._cleanup(model)
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91
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assert w._models == {}
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92
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93
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94
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7
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def test_widget_triggers_events(document, comm):
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95
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"""
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96
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Ensure widget events don't get swallowed in comm mode
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97
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"""
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98
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text = TextInput(value='ABC', name='Text:')
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99
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100
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widget = text.get_root(document, comm=comm)
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101
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document.add_root(widget)
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102
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document.hold()
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103
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104
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# Simulate client side change
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105
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document._held_events = document._held_events[:-1]
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106
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107
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# Set new value
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108
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with block_comm():
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109
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text.value = '123'
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110
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111
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assert len(document._held_events) == 1
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112
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event = document._held_events[0]
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113
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assert event.attr == 'value'
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114
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assert event.model is widget
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assert event.new == '123'
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116
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117
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118
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def test_widget_from_param_cls():
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119
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class Test(param.Parameterized):
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120
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121
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a = param.Parameter()
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122
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123
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widget = TextInput.from_param(Test.param.a)
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124
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assert isinstance(widget, TextInput)
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125
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assert widget.name == 'A'
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126
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127
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Test.a = 'abc'
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128
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assert widget.value == 'abc'
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129
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130
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widget.value = 'def'
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131
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assert Test.a == 'def'
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132
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133
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134
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7
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def test_widget_from_param_instance():
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135
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class Test(param.Parameterized):
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136
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137
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a = param.Parameter()
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138
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139
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test = Test()
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140
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widget = TextInput.from_param(test.param.a)
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141
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assert isinstance(widget, TextInput)
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142
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assert widget.name == 'A'
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143
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144
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test.a = 'abc'
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145
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assert widget.value == 'abc'
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146
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147
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widget.value = 'def'
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148
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assert test.a == 'def'
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149
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150
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151
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7
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def test_widget_from_param_instance_with_kwargs():
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152
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class Test(param.Parameterized):
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153
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154
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7
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a = param.Number(default=3.14)
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155
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156
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test = Test()
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157
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widget = FloatSlider.from_param(test.param.a, start=0.3, end=5.2)
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158
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assert isinstance(widget, FloatSlider)
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159
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assert widget.name == 'A'
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160
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assert widget.start == 0.3
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161
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assert widget.end == 5.2
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162
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assert widget.value == 3.14
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163
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164
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test.a = 1.57
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165
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assert widget.value == 1.57
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166
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167
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widget.value = 4.3
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168
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assert test.a == 4.3
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169
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philippjfr