text: 
  var test = require('tape').test
  
  var commist = require('./')
  
  test('registering a command', function (t) {
    t.plan(2)
  
    var program = commist()
  
    var result
  
    program.register('hello', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    result = program.parse(['hello', 'a', '-x', '23'])
  
    t.notOk(result, 'must return null, the command have been handled')
  })
  
  test('registering two commands', function (t) {
    t.plan(1)
  
    var program = commist()
  
    program.register('hello', function (args) {
      t.ok(false, 'must pick the right command')
    })
  
    program.register('world', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    program.parse(['world', 'a', '-x', '23'])
  })
  
  test('registering two commands (bis)', function (t) {
    t.plan(1)
  
    var program = commist()
  
    program.register('hello', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    program.register('world', function (args) {
      t.ok(false, 'must pick the right command')
    })
  
    program.parse(['hello', 'a', '-x', '23'])
  })
  
  test('registering two words commands', function (t) {
    t.plan(1)
  
    var program = commist()
  
    program.register('hello', function (args) {
      t.ok(false, 'must pick the right command')
    })
  
    program.register('hello world', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    program.parse(['hello', 'world', 'a', '-x', '23'])
  })
  
  test('registering two words commands (bis)', function (t) {
    t.plan(1)
  
    var program = commist()
  
    program.register('hello', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    program.register('hello world', function (args) {
      t.ok(false, 'must pick the right command')
    })
  
    program.parse(['hello', 'a', '-x', '23'])
  })
  
  test('registering ambiguous commands throws exception', function (t) {
    var program = commist()
  
    function noop () {}
  
    program.register('hello', noop)
    program.register('hello world', noop)
    program.register('hello world matteo', noop)
  
    try {
      program.register('hello world', noop)
      t.ok(false, 'must throw if double-registering the same command')
    } catch (err) {
    }
  
    t.end()
  })
  
  test('looking up commands', function (t) {
    var program = commist()
  
    function noop1 () {}
    function noop2 () {}
    function noop3 () {}
  
    program.register('hello', noop1)
    program.register('hello world matteo', noop3)
    program.register('hello world', noop2)
  
    t.equal(program.lookup('hello')[0].func, noop1)
    t.equal(program.lookup('hello world matteo')[0].func, noop3)
    t.equal(program.lookup('hello world')[0].func, noop2)
  
    t.end()
  })
  
  test('looking up commands with abbreviations', function (t) {
    var program = commist()
  
    function noop1 () {}
    function noop2 () {}
    function noop3 () {}
  
    program.register('hello', noop1)
    program.register('hello world matteo', noop3)
    program.register('hello world', noop2)
  
    t.equal(program.lookup('hel')[0].func, noop1)
    t.equal(program.lookup('hel wor mat')[0].func, noop3)
    t.equal(program.lookup('hel wor')[0].func, noop2)
  
    t.end()
  })
  
  test('looking up strict commands', function (t) {
    var program = commist()
  
    function noop1 () {}
    function noop2 () {}
  
    program.register({ command: 'restore', strict: true }, noop1)
    program.register({ command: 'rest', strict: true }, noop2)
  
    t.equal(program.lookup('restore')[0].func, noop1)
    t.equal(program.lookup('rest')[0].func, noop2)
    t.equal(program.lookup('remove')[0], undefined)
  
    t.end()
  })
  
  test('executing commands from abbreviations', function (t) {
    t.plan(1)
  
    var program = commist()
  
    program.register('hello', function (args) {
      t.deepEqual(args, ['a', '-x', '23'])
    })
  
    program.register('hello world', function (args) {
      t.ok(false, 'must pick the right command')
    })
  
    program.parse(['hel', 'a', '-x', '23'])
  })
  
  test('a command must be at least 3 chars', function (t) {
    var program = commist()
  
    function noop1 () {}
  
    try {
      program.register('h', noop1)
      t.ok(false, 'not thrown')
    } catch (err) {
    }
  
    t.end()
  })
  
  test('a command part must be at least 3 chars', function (t) {
    var program = commist()
  
    function noop1 () {}
  
    try {
      program.register('h b', noop1)
      t.ok(false, 'not thrown')
    } catch (err) {
    }
  
    t.end()
  })
  