Events

Debugging BDD tests is typically harder than debugging unit tests for a number of reasons, not the least of which is because you can't step through a feature file. You can make things a bit easier by adding event listeners, which log the step that is being executed.

var EventBus = require('Yadda').EventBus;
EventBus.instance().on(EventBus.ON_EXECUTE, function(event) {
    console.log(event.name, event.data);
});

ON_SCENARIO

Fired when the interpreter is about to process a scenario

{
  scenario: [
    '100 green bottles',
    'should 1 green bottle...'
  ],
  ctx: context
}

ON_STEP

Fired when the interpreter is about to process a step

{
  step: '100 green bottles...',
  ctx: context
}

ON_EXECUTE

Fired when the interpreter is about to execute the function associated with a step

{
  step: '100 green bottles...',
  pattern: '/(\d+) green bottles.../',
  args: [
    '100'
  ],
  ctx: context
}