WSTEAM1-1166: Adds integration tests for UGC send page

[Isabella-Mitchell]

Resolves JIRA WSTEAM1-1166 - Write out integration test

Overall changes

Adds integration tests for UCG send page

Code changes

• Adds ws-nextjs-app/integration/pages/send dir
• Imports baseline integration tests
• Adds test for form, submit button, input fields
• Tests two forms, one with file upload.

Testing

1. Check tests pass
2. Check tests are sufficient

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[Isabella-Mitchell]

Should we be testing submission interaction here? Like when a user presses the submit button, checking to see if a request is made to the endpoint? Always get confused what the difference is between our integration and unit tests

Looking in to this. Definitely can add a test that mocks filling in the form and clicks submit. One concern is that if fields change in the test asset then the test could be flakey. I suppose the fix for this would be getting a test asset made which we know won't change.

EDIT: I couldn't work out how to test submitting form successfully. I was able to mock clicking the submit button, but this wouldn't cause validation or submission. I think this a limitation of integration tests, though I'm certainly far from an expert. 🙈