async-test-pattern.js

  it('your test', async function() {
    
    let args = ... // your test data
    let result, error // variables: test and guard in the finally block
    
    try {
      result = await testFunction(args)
    } catch (err) {
      error = err
    } finally {
      
      expect(error).to.be.undefined() // guard: error (or result)
      expect(result).to.be... // test: result (or error)
      // ... more test
      
    }
  })