Test MacOS

Author: davidbrochart

.github/workflows/ui-tests.yml

@@ -5,9 +5,10 @@ on: [push, pull_request]
 jobs:
   ui-tests:
     name: Visual Regression
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: [ubuntu-latest, macos-latest]
         python: [3.8]
       fail-fast: false
 

ui-tests/tests/xarray-leaflet.test.ts

@@ -8,7 +8,7 @@ async function renderMap(fileName: string, page: IJupyterLabPageFixture) {
   await page.notebook.run();
   await page.notebook.waitForRun();
   const maps = await page.$("div.leaflet-container");
-  await new Promise((_) => setTimeout(_, 1000));
+  await new Promise((_) => setTimeout(_, 10000));
   expect(await maps.screenshot()).toMatchSnapshot({
     name: `${fileName}.png`,
   });