What is the process for establishing a dependency on two distinct JavaScript files, similar to the depends-on feature found in TestNG?

I am faced with a scenario where I have two separate JS files containing test methods, namely File1 and File2. The requirement is that File2.js should only be executed if File1.js has successfully completed its execution. My current setup involves using Javascript in combination with the Mocha framework and WDIO for testing.

Answer №1

Having tests depend on each other can lead to several drawbacks:

  • Increased difficulty in isolating issues in File2, as File1 needs to be executed first.

  • Inability to run tests simultaneously for faster execution.

  • If File1 fails, it blocks testing of File2 functionality.

For example, if File1 tests user account creation and File2 tests posting a message, one solution is to set up a pre-seeded account for File2 to use independently. This way, even if account creation fails, you can still test the posting feature concurrently.

Consider exploring alternatives to eliminate dependencies when possible.

If avoiding dependency is not feasible, consider implementing a before block check in File2 to ensure the expected state is maintained. If the check fails, it will skip File2 checks accordingly.

before(`Check if File 1 Ran Successfully`, () => {
  expect(isMyFile1DataInPlace()).toBe(true)
})

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