def test_embed_slider_str_link(document, comm):
slider = FloatSlider(start=0, end=10)
string = Str()
def link(target, event):
target.object = event.new
slider.link(string, callbacks={'value': link})
panel = Row(slider, string)
with config.set(embed=True):
model = panel.get_root(document, comm)
embed_state(panel, model, document)
_, state = document.roots
assert set(state.state) == {0, 1, 2}
values = [0, 5, 10]
for k, v in state.state.items():
content = json.loads(v['content'])
assert 'events' in content
events = content['events']
assert len(events) == 1
event = events[0]
assert event['kind'] == 'ModelChanged'
assert event['attr'] == 'text'
assert event['model'] == model.children[1].ref
assert event['new'] == '<pre>%.1f</pre>' % values[k]
def test_embed_float_slider_explicit_values(document, comm):
select = FloatSlider()
string = Str()
def link(target, event):
target.object = event.new
select.link(string, callbacks={'value': link})
panel = Row(select, string)
with config.set(embed=True):
model = panel.get_root(document, comm)
embed_state(panel, model, document, states={select: [0.1, 0.7, 1]})
_, state = document.roots
assert set(state.state) == {0, 1, 2}
states = {0: 0.1, 1: 0.7, 2: 1}
for (k, v) in state.state.items():
content = json.loads(v['content'])
assert 'events' in content
events = content['events']
assert len(events) == 1
event = events[0]
assert event['kind'] == 'ModelChanged'
assert event['attr'] == 'text'
assert event['model'] == model.children[1].ref
assert event['new'] == '<pre>%s</pre>' % states[k]
def test_pnwidget_hvplot_links(document, comm):
size_widget = FloatSlider(value=5, start=1, end=10)
points1 = hv.Points([1, 2, 3])
size_widget.jslink(points1, value='glyph.size')
row = Row(points1, size_widget)
model = row._get_root(document, comm=comm)
hv_views = row.select(HoloViews)
widg_views = row.select(FloatSlider)
assert len(hv_views) == 1
assert len(widg_views) == 1
slider = widg_views[0]._models[model.ref['id']]
scatter = hv_views[0]._plots[model.ref['id']].handles['glyph']
link_customjs = slider.js_property_callbacks['change:value'][-1]
assert link_customjs.args['source'] is slider
assert link_customjs.args['target'] is scatter
code = (
"value = source['value'];"
"try { property = target.properties['size'];"
"if (property !== undefined) { property.validate(value); } }"
"catch(err) { console.log('WARNING: Could not set size on target, raised error: ' + err); return; }"
"target['size'] = value")
assert link_customjs.code == code
def test_embed_float_slider_explicit_values_out_of_bounds(document, comm):
select = FloatSlider()
string = Str()
def link(target, event):
target.object = event.new
select.link(string, callbacks={'value': link})
panel = Row(select, string)
with config.set(embed=True):
model = panel.get_root(document, comm)
with pytest.raises(ValueError):
embed_state(panel, model, document, states={select: [0.1, 0.7, 2]})
def test_template_session_destroy(document, comm):
tmplt = Template(template)
widget = FloatSlider()
row = Row('A', 'B')
tmplt.add_panel('A', widget)
tmplt.add_panel('B', row)
tmplt._init_doc(document, comm, notebook=True)
session_context = param.Parameterized()
session_context._document = document
session_context.id = 'Some ID'
assert len(widget._models) == 2
assert len(row._models) == 2
assert len(row[0]._models) == 2
assert len(row[1]._models) == 2
for cb in document.session_destroyed_callbacks:
cb(session_context)
assert len(widget._models) == 0
assert len(row._models) == 0
assert len(row[0]._models) == 0
assert len(row[1]._models) == 0
def test_embed_continuous(document, comm):
select = FloatSlider(start=0, end=10)
string = Str()
select.link(string, value='object')
panel = Row(select, string)
with config.set(embed=True):
model = panel.get_root(document, comm)
embed_state(panel, model, document)
_, state = document.roots
assert set(state.state) == {0, 1, 2}
values = [0, 5, 10]
for k, v in state.state.items():
content = json.loads(v['content'])
assert 'events' in content
events = content['events']
assert len(events) == 1
event = events[0]
assert event['kind'] == 'ModelChanged'
assert event['attr'] == 'text'
assert event['model'] == model.children[1].ref
assert event['new'] == '<pre>%.1f</pre>' % values[k]
def test_embed_slider_str_jslink(document, comm):
slider = FloatSlider(start=0, end=10)
string = Str()
slider.link(string, value='object')
panel = Row(slider, string)
with config.set(embed=True):
model = panel.get_root(document, comm)
embed_state(panel, model, document)
assert len(document.roots) == 1
assert model is document.roots[0]
ref = model.ref['id']
cbs = list(model.select({'type': CustomJS}))
assert len(cbs) == 2
cb1, cb2 = cbs
cb1, cb2 = (cb1,
cb2) if slider._models[ref][0] is cb1.args['source'] else (cb2,
cb1)
assert cb1.code == """
var value = source['value'];
value = value;
value = JSON.stringify(value).replace(/,/g, ", ").replace(/:/g, ": ");
try {
var property = target.properties['text'];
if (property !== undefined) { property.validate(value); }
} catch(err) {
console.log('WARNING: Could not set text on target, raised error: ' + err);
return;
}
try {
target['text'] = value;
} catch(err) {
console.log(err)
}
"""
assert cb2.code == """
def test_float_slider(document, comm):
slider = FloatSlider(start=0.1, end=0.5, value=0.4, name='Slider')
widget = slider.get_root(document, comm=comm)
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 0.1
assert widget.start == 0.1
assert widget.end == 0.5
assert widget.value == 0.4
assert widget.value_throttled == 0.4
slider._process_events({'value': 0.2})
assert slider.value == 0.2
slider._process_events({'value_throttled': 0.2})
assert slider.value_throttled == 0.2
slider.value = 0.3
assert widget.value == 0.3
slider.value_throttled = 0.3
assert widget.value_throttled == 0.3
def test_widget_from_param_instance_with_kwargs():
class Test(param.Parameterized):
a = param.Number(default=3.14)
test = Test()
widget = FloatSlider.from_param(test.param.a, start=0.3, end=5.2)
assert isinstance(widget, FloatSlider)
assert widget.name == 'A'
assert widget.start == 0.3
assert widget.end == 5.2
assert widget.value == 3.14
test.a = 1.57
assert widget.value == 1.57
widget.value = 4.3
assert test.a == 4.3
def test_basic_template(template, document, comm):
tmplt = template(title='BasicTemplate',
header_background='blue',
header_color='red')
tmplt._update_vars()
tvars = tmplt._render_variables
assert tvars['app_title'] == 'BasicTemplate'
assert tvars['header_background'] == 'blue'
assert tvars['header_color'] == 'red'
assert tvars['nav'] == False
assert tvars['busy'] == True
assert tvars['header'] == False
titems = tmplt._render_items
assert titems['busy_indicator'] == (tmplt.busy_indicator, [])
markdown = Markdown('# Some title')
tmplt.main.append(markdown)
assert titems[str(id(markdown))] == (markdown, ['main'])
slider = FloatSlider()
tmplt.sidebar.append(slider)
assert titems[str(id(slider))] == (slider, ['nav'])
assert tvars['nav'] == True
tmplt.sidebar[:] = []
assert tvars['nav'] == False
assert str(id(slider)) not in titems
subtitle = Markdown('## Some subtitle')
tmplt.header.append(subtitle)
assert titems[str(id(subtitle))] == (subtitle, ['header'])
assert tvars['header'] == True
tmplt.header[:] = []
assert str(id(subtitle)) not in titems
assert tvars['header'] == False
def test_float_slider(document, comm):
slider = FloatSlider(start=0.1, end=0.5, value=0.4, name='Slider')
widget = slider._get_root(document, comm=comm)
assert isinstance(widget, slider._widget_type)
assert widget.title == 'Slider'
assert widget.step == 0.1
assert widget.start == 0.1
assert widget.end == 0.5
assert widget.value == 0.4
slider._comm_change({'value': 0.2})
assert slider.value == 0.2
slider.value = 0.3
assert widget.value == 0.3
assert repr(
slider) == "FloatSlider(end=0.5, name='Slider', start=0.1, value=0.3)"
def test_float_slider(document, comm):
slider = FloatSlider(start=0.1, end=0.5, value=0.4, 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 == 0.1
assert widget.start == 0.1
assert widget.end == 0.5
assert widget.value == 0.4
slider._comm_change({'value': 0.2})
assert slider.value == 0.2
slider.value = 0.3
assert widget.value == 0.3
