Run a few tests with both json and orjson encoders

Author: jonmmease

Diff for: requires-dev.txt

@@ -10,3 +10,4 @@ black==21.6b0
 fire==0.4.0
 coloredlogs==15.0.1
 flask-talisman==0.8.1
+orjson>=3.6

Diff for: tests/integration/callbacks/test_basic_callback.py

@@ -16,6 +16,7 @@
 from dash.dependencies import Input, Output, State
 from dash.exceptions import PreventUpdate
 from dash.testing import wait
+from tests.integration.utils import json_engine
 
 
 def test_cbsc001_simple_callback(dash_duo):
@@ -248,57 +249,61 @@ def update_out2(n_clicks, data):
     assert dash_duo.get_logs() == []
 
 
-def test_cbsc005_children_types(dash_duo):
-    app = dash.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 dash.no_update
-        return outputs[n - 1][0]
+@pytest.mark.parametrize("engine", ["json", "orjson"])
+def test_cbsc005_children_types(dash_duo, engine):
+    with json_engine(engine):
+        app = dash.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"],
+        ]
 
-    dash_duo.start_server(app)
-    dash_duo.wait_for_text_to_equal("#out", "init")
+        @app.callback(Output("out", "children"), [Input("btn", "n_clicks")])
+        def set_children(n):
+            if n is None or n > len(outputs):
+                return dash.no_update
+            return outputs[n - 1][0]
 
-    for children, text in outputs:
-        dash_duo.find_element("#btn").click()
-        dash_duo.wait_for_text_to_equal("#out", text)
+        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):
-    app = dash.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)]
+@pytest.mark.parametrize("engine", ["json", "orjson"])
+def test_cbsc006_array_of_objects(dash_duo, engine):
+    with json_engine(engine):
+        app = dash.Dash()
+        app.layout = html.Div(
+            [html.Button(id="btn"), dcc.Dropdown(id="dd"), html.Div(id="out")]
+        )
 
-    @app.callback(Output("out", "children"), [Input("dd", "options")])
-    def set_out(opts):
-        print(repr(opts))
-        return len(opts)
+        @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)]
 
-    dash_duo.start_server(app)
+        @app.callback(Output("out", "children"), [Input("dd", "options")])
+        def set_out(opts):
+            print(repr(opts))
+            return len(opts)
 
-    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))
+        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))
 
 
 @pytest.mark.parametrize("refresh", [False, True])

Diff for: tests/integration/utils.py

@@ -1,4 +1,5 @@
 import time
+import contextlib
 
 
 TIMEOUT = 5  # Seconds
@@ -61,3 +62,15 @@ def wrapped_condition_function():
         time.sleep(0.5)
 
     raise WaitForTimeout(get_message())
+
+
+@contextlib.contextmanager
+def json_engine(engine):
+    import plotly.io as pio
+
+    original_engine = pio.json.config.default_engine
+    try:
+        pio.json.config.default_engine = engine
+        yield
+    finally:
+        pio.json.config.default_engine = original_engine