def test_int_slider(document, comm):
slider = IntSlider(start=0, end=3, value=1, name='Slider')
widget = slider.get_root(document, comm=comm)
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 1
assert widget.start == 0
assert widget.end == 3
assert widget.value == 1
slider._process_events({'value': 2})
assert slider.value == 2
slider._process_events({'value_throttled': 2})
assert slider.value_throttled == 2
slider.value = 0
assert widget.value == 0
# Testing that value matches start value if value not set.
slider_2 = IntSlider(start=1, end=3, name='Slider_2')
widget_2 = slider_2.get_root(document, comm=comm)
assert widget_2.value == widget_2.start
# Testing throttled mode
with config.set(throttled=True):
slider._process_events({'value': 1})
assert slider.value == 0 # no change
slider._process_events({'value_throttled': 1})
assert slider.value == 1
slider.value = 2
assert widget.value == 2
def test_bind_two_widgets_as_kwargs():
widget = IntSlider(value=0)
widget2 = IntSlider(value=1)
def add(value, value2):
return value + value2
bound_function = bind(add, value=widget, value2=widget2)
assert bound_function() == 1
widget.value = 1
assert bound_function() == 2
widget2.value = 2
assert bound_function() == 3
with pytest.raises(TypeError):
bound_function(1, 2)
assert bound_function(value2=5) == 6
def test_bind_two_widget_arg_with_remaining_arg():
widget = IntSlider(value=0)
def add(value, value2):
return value + value2
bound_function = bind(add, widget)
assert bound_function(1) == 1
widget.value = 1
assert bound_function(2) == 3
assert bound_function(value2=3) == 4
def test_bind_widget_to_kwarg():
widget = IntSlider(value=0)
def add1(value):
return value + 1
bound_function = bind(add1, value=widget)
assert bound_function() == 1
widget.value = 1
assert bound_function() == 2
with pytest.raises(TypeError):
bound_function(1)
def test_bind_bound_function_to_kwarg():
widget = IntSlider(value=1)
def add1(value):
return value + 1
def divide(divisor=2, value=0):
return value / divisor
bound_function = bind(divide, value=bind(add1, widget.param.value))
assert bound_function() == 1
widget.value = 3
assert bound_function() == 2
def test_int_slider(document, comm):
slider = IntSlider(start=0, end=3, value=1, name='Slider')
widget = slider.get_root(document, comm=comm)
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 1
assert widget.start == 0
assert widget.end == 3
assert widget.value == 1
slider._comm_change({'value': 2})
assert slider.value == 2
slider.value = 0
assert widget.value == 0
def test_int_slider(document, comm):
slider = IntSlider(start=0, end=3, value=1, name='Slider')
box = slider._get_model(document, comm=comm)
assert isinstance(box, WidgetBox)
widget = box.children[0]
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 1
assert widget.start == 0
assert widget.end == 3
assert widget.value == 1
slider._comm_change({'value': 2})
assert slider.value == 2
slider.value = 0
assert widget.value == 0
def test_int_slider(document, comm):
slider = IntSlider(start=0, end=3, value=1, name='Slider')
widget = slider.get_root(document, comm=comm)
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 1
assert widget.start == 0
assert widget.end == 3
assert widget.value == 1
slider._comm_change({'value': 2})
assert slider.value == 2
slider.value = 0
assert widget.value == 0
# Testing that value matches start value if value not set.
slider_2 = IntSlider(start=1, end=3, name='Slider_2')
widget_2 = slider_2.get_root(document, comm=comm)
assert widget_2.value == widget_2.start
def test_gridspec_stretch_with_replacement_pane(document, comm):
slider = IntSlider(start=0, end=2)
@depends(slider)
def div(value):
return Div(text=str(value))
gspec = GridSpec(sizing_mode='stretch_width')
gspec[0, 0:2] = Div()
gspec[1, 2] = div
model = gspec.get_root(document, comm=comm)
((div1, _, _, _, _), (row, _, _, _, _)) = model.children
div2 = row.children[0]
assert div1.sizing_mode == 'stretch_width'
assert div1.height == 300
assert div2.sizing_mode == 'stretch_width'
assert div2.height == 300
slider.value = 1
assert row.children[0] is not div2
assert row.children[0].sizing_mode == 'stretch_width'
assert row.children[0].height == 300