setup_test.js

var tape = require('tape')

module.exports = setup

function setup(up, down, run) {
  return function add_test(name, fn) {
    var test_state = {}

    var test = tape(name, function(t) {
        test_state = up ? up(test_state) : test_state
        fn.call(this, t, context)
      })
    })

    test.on('end', function() {
      if(down) {
        down(test_state)
      }
    })

    if(run) {
      test.on('run', function() {
        run(test_state)
      })
    }

    return test
  }
}

test.js

var setup = require('./setup')

var test = setup(up, down, run)

test('something', function(t, state) {
  t.equal(state.setup, 'yup')
  t.end()
})

function up(state) {
  //called right after test is added
  state.up = 'yup'
  
  return state
}

function run(state) {
  //callled when test is about to start
}

function down(state) {
  //callled after the test ends
}