def test_cbsc005_children_types(dash_duo, engine):
with json_engine(engine):
app = Dash()
app.layout = html.Div([html.Button(id="btn"), html.Div("init", id="out")])
outputs = [
[None, ""],
["a string", "a string"],
[123, "123"],
[123.45, "123.45"],
[[6, 7, 8], "678"],
[["a", "list", "of", "strings"], "alistofstrings"],
[["strings", 2, "numbers"], "strings2numbers"],
[["a string", html.Div("and a div")], "a string\nand a div"],
]
@app.callback(Output("out", "children"), [Input("btn", "n_clicks")])
def set_children(n):
if n is None or n > len(outputs):
return no_update
return outputs[n - 1][0]
dash_duo.start_server(app)
dash_duo.wait_for_text_to_equal("#out", "init")
for children, text in outputs:
dash_duo.find_element("#btn").click()
dash_duo.wait_for_text_to_equal("#out", text)
def test_cbsc006_array_of_objects(dash_duo, engine):
with json_engine(engine):
app = Dash()
app.layout = html.Div(
[html.Button(id="btn"),
dcc.Dropdown(id="dd"),
html.Div(id="out")])
@app.callback(Output("dd", "options"), [Input("btn", "n_clicks")])
def set_options(n):
return [{
"label": "opt{}".format(i),
"value": i
} for i in range(n or 0)]
@app.callback(Output("out", "children"), [Input("dd", "options")])
def set_out(opts):
print(repr(opts))
return len(opts)
dash_duo.start_server(app)
dash_duo.wait_for_text_to_equal("#out", "0")
for i in range(5):
dash_duo.find_element("#btn").click()
dash_duo.wait_for_text_to_equal("#out", str(i + 1))
dash_duo.select_dcc_dropdown("#dd", "opt{}".format(i))