fix: solara.server.jupyter.server_extension not activating

pyproject.toml

@@ -39,6 +39,7 @@ dependencies = [
 
 [tool.hatch.build.targets.wheel.shared-data]
 "prefix" = "prefix"
+"prefix/etc/jupyter" = "etc/jupyter"
 
 [tool.hatch.version]
 path = "solara/__init__.py"

tests/integration/cdn_test.py

@@ -0,0 +1,52 @@
+import playwright.sync_api
+import pytest
+from IPython.display import display
+
+from .conftest import SERVERS
+
+# the altair figure uses the CDN
+
+
+def test_cdn_via_altair(ipywidgets_runner, page_session: playwright.sync_api.Page, request, assert_solara_snapshot):
+    if request.node.callspec.params["ipywidgets_runner"] != "solara" and request.node.callspec.params["solara_server"] != SERVERS[0]:
+        pytest.skip("No need to run this test for all servers.")
+    if request.node.callspec.params["ipywidgets_runner"] == "voila":
+        # see https://github.com/widgetti/solara/issues/486
+        pytest.skip("Does not work with Voila.")
+
+    # this function (or rather its lines) will be executed in the kernel
+    # voila, lab, classic notebook and solara will all execute it
+    def kernel_code():
+        import altair as alt
+        from vega_datasets import data
+
+        import solara
+
+        source = data.seattle_weather()
+
+        @solara.component
+        def Page():
+            chart = (
+                alt.Chart(source, title="Daily Max Temperatures (C) in Seattle, WA")
+                .mark_rect()
+                .encode(
+                    alt.X("date(date):O").title("Day").axis(format="%e", labelAngle=0),
+                    alt.Y("month(date):O").title("Month"),
+                    alt.Color("max(temp_max)").title(None),
+                    tooltip=[
+                        alt.Tooltip("monthdate(date)", title="Date"),
+                        alt.Tooltip("max(temp_max)", title="Max Temp"),
+                    ],
+                )
+                .configure_view(step=13, strokeWidth=0)
+                .configure_axis(domain=False)
+            )
+            solara.AltairChart(chart)
+
+        display(Page())
+
+    ipywidgets_runner(kernel_code)
+    vega_selector = page_session.locator('details[title="Click to view actions"]')
+    vega_selector.wait_for(state="attached")
+    # assert_solara_snapshot(vega_selector.screenshot())
+    # page_session.wait_for_timeout(1000)