Add test arbitrary callbacks.

Author: T4rk1n

tests/integration/callbacks/test_arbitrary_callbacks.py

@@ -0,0 +1,123 @@
+from dash import Dash, Input, Output, html, set_props, register_page
+
+
+def test_arb001_global_set_props(dash_duo):
+    app = Dash()
+    app.layout = html.Div(
+        [
+            html.Div(id="output"),
+            html.Div(id="secondary-output"),
+            html.Button("click", id="clicker"),
+        ]
+    )
+
+    @app.callback(
+        Output("output", "children"),
+        Input("clicker", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def on_click(n_clicks):
+        set_props("secondary-output", {"children": "secondary"})
+        return f"Clicked {n_clicks} times"
+
+    dash_duo.start_server(app)
+
+    dash_duo.wait_for_element("#clicker").click()
+    dash_duo.wait_for_text_to_equal("#output", "Clicked 1 times")
+    dash_duo.wait_for_text_to_equal("#secondary-output", "secondary")
+
+
+def test_arb002_no_output_callbacks(dash_duo):
+    app = Dash()
+
+    app.layout = html.Div(
+        [
+            html.Div(id="secondary-output"),
+            html.Button("no-output", id="no-output"),
+            html.Button("no-output2", id="no-output2"),
+        ]
+    )
+
+    @app.callback(
+        Input("no-output", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def no_output(_):
+        set_props("secondary-output", {"children": "no-output"})
+
+    @app.callback(
+        Input("no-output2", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def no_output(_):
+        set_props("secondary-output", {"children": "no-output2"})
+
+    dash_duo.start_server(app)
+
+    dash_duo.wait_for_element("#no-output").click()
+    dash_duo.wait_for_text_to_equal("#secondary-output", "no-output")
+
+    dash_duo.wait_for_element("#no-output2").click()
+    dash_duo.wait_for_text_to_equal("#secondary-output", "no-output2")
+
+
+def test_arb003_arbitrary_pages(dash_duo):
+    app = Dash(use_pages=True, pages_folder="")
+
+    register_page(
+        "page",
+        "/",
+        layout=html.Div(
+            [
+                html.Div(id="secondary-output"),
+                html.Button("no-output", id="no-output"),
+                html.Button("no-output2", id="no-output2"),
+            ]
+        ),
+    )
+
+    @app.callback(
+        Input("no-output", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def no_output(_):
+        set_props("secondary-output", {"children": "no-output"})
+
+    @app.callback(
+        Input("no-output2", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def no_output(_):
+        set_props("secondary-output", {"children": "no-output2"})
+
+    dash_duo.start_server(app)
+
+    dash_duo.wait_for_element("#no-output").click()
+    dash_duo.wait_for_text_to_equal("#secondary-output", "no-output")
+
+    dash_duo.wait_for_element("#no-output2").click()
+    dash_duo.wait_for_text_to_equal("#secondary-output", "no-output2")
+
+
+def test_arb004_wildcard_set_props(dash_duo):
+    app = Dash()
+    app.layout = html.Div(
+        [
+            html.Button("click", id="click"),
+            html.Div(html.Div(id={"id": "output", "index": 0}), id="output"),
+        ]
+    )
+
+    @app.callback(
+        Input("click", "n_clicks"),
+        prevent_initial_call=True,
+    )
+    def on_click(n_clicks):
+        set_props(
+            {"id": "output", "index": 0}, {"children": f"Clicked {n_clicks} times"}
+        )
+
+    dash_duo.start_server(app)
+
+    dash_duo.wait_for_element("#click").click()
+    dash_duo.wait_for_text_to_equal("#output", "Clicked 1 times")