port loading component tests to dash.testing - without fixing them

Author: alexcjohnson

tests/integration/loading/test_loading_component.py

@@ -0,0 +1,209 @@
+from multiprocessing import Lock
+
+import dash
+from dash.dependencies import Input, Output
+import dash_core_components as dcc
+import dash_html_components as html
+
+
+def test_ldcp001_loading_component_initialization(dash_dcc):
+    lock = Lock()
+
+    app = dash.Dash(__name__)
+
+    app.layout = html.Div([
+        dcc.Loading([html.Div(id='div-1')], className='loading')
+    ], id='root')
+
+    @app.callback(Output('div-1', 'children'), [Input('root', 'n_clicks')])
+    def updateDiv(children):
+        with lock:
+            return 'content'
+
+    with lock:
+        dash_dcc.start_server(app)
+        dash_dcc.find_element('.loading .dash-spinner')
+
+    dash_dcc.find_element('.loading #div-1')
+
+    assert not dash_dcc.get_logs()
+
+
+def test_ldcp002_loading_component_action(dash_dcc):
+    lock = Lock()
+
+    app = dash.Dash(__name__)
+
+    app.layout = html.Div([
+        dcc.Loading([html.Div(id='div-1')], className='loading')
+    ], id='root')
+
+    @app.callback(Output('div-1', 'children'), [Input('root', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is not None:
+            with lock:
+                return
+
+        return 'content'
+
+    with lock:
+        dash_dcc.start_server(app)
+        dash_dcc.find_element('.loading #div-1')
+
+        dash_dcc.find_element('#root').click()
+
+        dash_dcc.find_element('.loading .dash-spinner')
+
+    dash_dcc.find_element('.loading #div-1')
+
+    assert not dash_dcc.get_logs()
+
+
+def test_ldcp003_multiple_loading_components(dash_dcc):
+    lock = Lock()
+
+    app = dash.Dash(__name__)
+
+    app.layout = html.Div([
+        dcc.Loading([html.Button(id='btn-1')], className='loading-1'),
+        dcc.Loading([html.Button(id='btn-2')], className='loading-2')
+    ], id='root')
+
+    @app.callback(Output('btn-1', 'value'), [Input('btn-2', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is not None:
+            with lock:
+                return
+
+        return 'content'
+
+    @app.callback(Output('btn-2', 'value'), [Input('btn-1', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is not None:
+            with lock:
+                return
+
+        return 'content'
+
+    dash_dcc.start_server(app)
+
+    dash_dcc.find_element('.loading-1 #btn-1')
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    with lock:
+        dash_dcc.find_element('#btn-1').click()
+
+        dash_dcc.find_element('.loading-2 .dash-spinner')
+        dash_dcc.find_element('.loading-1 #btn-1')
+
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    with lock:
+        dash_dcc.find_element('#btn-2').click()
+
+        dash_dcc.find_element('.loading-1 .dash-spinner')
+
+    dash_dcc.find_element('.loading-1 #btn-1')
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    assert not dash_dcc.get_logs()
+
+
+def test_ldcp004_nested_loading_components(dash_dcc):
+    lock = Lock()
+
+    app = dash.Dash(__name__)
+
+    app.layout = html.Div([
+        dcc.Loading([
+            html.Button(id='btn-1'),
+            dcc.Loading([html.Button(id='btn-2')], className='loading-2')
+        ], className='loading-1')
+    ], id='root')
+
+    @app.callback(Output('btn-1', 'value'), [Input('btn-2', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is not None:
+            with lock:
+                return
+
+        return 'content'
+
+    @app.callback(Output('btn-2', 'value'), [Input('btn-1', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is not None:
+            with lock:
+                return
+
+        return 'content'
+
+    dash_dcc.start_server(app)
+
+    dash_dcc.find_element('.loading-1 #btn-1')
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    with lock:
+        dash_dcc.find_element('#btn-1').click()
+
+        dash_dcc.find_element('.loading-2 .dash-spinner')
+        dash_dcc.find_element('.loading-1 #btn-1')
+
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    with lock:
+        dash_dcc.find_element('#btn-2').click()
+
+        dash_dcc.find_element('.loading-1 .dash-spinner')
+
+    dash_dcc.find_element('.loading-1 #btn-1')
+    dash_dcc.find_element('.loading-2 #btn-2')
+
+    assert not dash_dcc.get_logs()
+
+
+def test_ldcp005_dynamic_loading_component(dash_dcc):
+    lock = Lock()
+
+    app = dash.Dash(__name__)
+    app.config['suppress_callback_exceptions'] = True
+
+    app.layout = html.Div([html.Button(id='btn-1'), html.Div(id='div-1')])
+
+    @app.callback(Output('div-1', 'children'), [Input('btn-1', 'n_clicks')])
+    def updateDiv(n_clicks):
+        if n_clicks is None:
+            return
+
+        with lock:
+            return html.Div([
+                html.Button(id='btn-2'),
+                dcc.Loading([html.Button(id='btn-3')], className='loading-1')
+            ])
+
+    @app.callback(Output('btn-3', 'content'), [Input('btn-2', 'n_clicks')])
+    def updateDynamic(n_clicks):
+        if n_clicks is None:
+            return
+
+        with lock:
+            return 'content'
+
+    dash_dcc.start_server(app)
+
+    dash_dcc.find_element('#btn-1')
+    dash_dcc.find_element('#div-1')
+
+    dash_dcc.find_element('#btn-1').click()
+
+    dash_dcc.find_element('#div-1 #btn-2')
+    dash_dcc.find_element('.loading-1 #btn-3')
+
+    with lock:
+        dash_dcc.find_element('#btn-2').click()
+
+        dash_dcc.find_element('.loading-1 .dash-spinner')
+
+    dash_dcc.find_element('#div-1 #btn-2')
+    dash_dcc.find_element('.loading-1 #btn-3')
+
+    assert not dash_dcc.get_logs()