test(datetime): event for calendar month text change

[sean-perkins]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build (npm run build) was run locally and any changes were pushed
• Lint (npm run lint) has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe): Flaky e2e tests

What is the current behavior?

The calendar month text updating can take longer than the hard set 350ms timeout in the e2e tests.

Issue URL:

What is the new behavior?

Using a mutation observer, we can dispatch a custom event that the test can listen for when the text is actually modified.

Does this introduce a breaking change?

• Yes
• No

Other information

[liamdebeasi]

Can we remove the other waitForTimeout calls as well? If you want to wait for the modal to present, you can spy on the ionModalDidPresent event. See

ionic-framework/core/src/components/modal/test/card/e2e.ts

Line 26 in 223f36f

await ionModalDidPresent.next();