Add support for conditional logic around elements

[etaiklein]

This is a request to expose the ability to run code conditionally in detox tests based on the existence of elements.

For example:

const mainScreen = element(by.id('mainScreen'));
if (!mainScreen) {
  await doOnboarding();
}
await expect(mainScreen).toBeVisible();

[LeoNatan]

You can try/catch expectations and branch from that to the rest of your logic.

So:

try {
  expect(mainScreen).toBeVisible();
}
catch {
  await doOnboarding();
}

[rotemmiz]

Tests with branches are bad tests in my opinion.
A test should have a predictable input, and a predictable output.
If it branches it's not one test, but two.

Try making your input predictable by mocking what needs to be mocked.

[etaiklein]

Try/catch will work thanks!

—

We need the branching logic to setup the tests the same on different logged in accounts- the tests themselves definitely shouldn’t branch.

—

Using mocked data doesn’t work for our use case since we want to test dependent services as well.