Implement more tests for the generator

[baltpeter]

We already have a few tests for the generator. They should be expanded with the following:

• [ ] For emails, the 'Recipient (email address)' field is correctly reflected in the mailto link and in the 'Copy text manually' modal.
• [ ] Changing the request type produces a different generated request.
• [ ] When multiple address inputs are added, the 'Sender address' button is displayed and acts like a radio button.
• [x] When 'rectification request' is selected, a 'Correct data' section appears on the right (and disappears for other requests).
• [x] When 'erasure request' is selected, the text is changed based on the 'Erase all data' checkbox and the 'Data to erase' field.
• [x] 'Your own text' shows a different form on the right.
• [x] Selecting a template for 'Your own text' changes the text.
• [x] The text and subject entered for 'Your own text' are reflected in the generated request.

Tips:

• Our browser tests are based on Cypress. To get an overview of Cypress, we recommend going through their very extensive and well-written guides, especially Writing your first test and Introduction to Cypress.
• See the testing README for more details on how our tests work and how to run them.
• Take a look at the existing tests. They are a good reference and contain solutions for many common patterns and problems already.
• Feel free to ask if one of the test descriptions isn't clear.

[kritikash18]

@baltpeter Can I try this?

[zner0L]

@kritikash18 What kinds of tests are your looking to add? Or do you want to add all of them?

[kritikash18]

@zner0L If all the tests are for generator only, then I can add at least half of them

[baltpeter]

@kritikash18 If you want to be assigned to specific ones, just let us know which ones. Otherwise, feel free to just give it a go and submit a PR without being assigned.

[kritikash18]

@baltpeter @zner0L I've written and tested some of the required tests. I needed clarity on one of the tests.

When 'erasure request' is selected, the text is changed based on the 'Erase all data' checkbox and the 'Data to erase' field.

For me, when clicking on erase all data checkbox, the only difference I see is that the data to erase field disappears but in the above description, it is mentioned that some text also changes. Am I missing something?

[baltpeter]

@kritikash18 The test description is talking about the generated text. You can see that by clicking the "Send email" button and then selecting one of the methods (for the tests, we usually use "Copy text manually" as that's the easiest for programatically checking the text).

[kritikash18]

@baltpeter @zner0L I added 5 tests for the following use cases:

1. When 'rectification request' is selected, a 'Correct data' section appears on the right (and disappears for other requests).
2. When 'erasure request' is selected, the text is changed based on the 'Erase all data' checkbox and the 'Data to erase' field.
3. 'Your own text' shows a different form on the right. 
4. Selecting a template for 'Your own text' changes the text.
5. The text and subject entered for 'Your own text' are reflected in the generated request.

Raised #794 Please review