run hover label tests in different time zones

Author: archmoj

.circleci/config.yml

@@ -31,6 +31,35 @@ jobs:
           paths:
             - plotly.js
 
+  timezone-jasmine:
+    docker:
+      # need '-browsers' version to test in real (xvfb-wrapped) browsers
+      - image: circleci/node:12.22.1-browsers
+    working_directory: ~/plotly.js
+    steps:
+      - attach_workspace:
+          at: ~/
+      - run:
+          name: Run hover_label test in UTC timezone
+          environment:
+            TZ: "UTC"
+          command: date && npm run test-jasmine hover_label
+      - run:
+          name: Run hover_label test in Europe/Berlin timezone
+          environment:
+            TZ: "Europe/Berlin"
+          command: date && npm run test-jasmine hover_label
+      - run:
+          name: Run hover_label test in Asia/Tokyo timezone
+          environment:
+            TZ: "Asia/Tokyo"
+          command: date && npm run test-jasmine hover_label
+      - run:
+          name: Run hover_label test in America/Toronto timezone
+          environment:
+            TZ: "America/Toronto"
+          command: date && npm run test-jasmine hover_label
+
   no-gl-jasmine:
     docker:
       # need '-browsers' version to test in real (xvfb-wrapped) browsers
@@ -258,6 +287,9 @@ workflows:
   build-and-test:
     jobs:
       - install-and-cibuild
+      - timezone-jasmine:
+          requires:
+            - install-and-cibuild
       - bundle-jasmine:
           requires:
             - install-and-cibuild