针对iPhone Native应用程序的测试驱动设计

Question

我正在试验iPhone SDK并做一些TDD ala Dr. Nic的rbiPhoneTest项目.我想知道有多少(如果有的话)成功使用这个或任何其他测试框架的iPhone/Cocoa？更重要的是,我想知道如何最好地断言专有的二进制请求/响应协议.想法是通过网络发送二进制请求并接收二进制响应.使用byte和'ing和oring创建请求和响应.我正在使用黄金副本模式来测试我的请求.这是我到目前为止所拥有的.不要笑,因为我是btoh Objective C和Ruby的新手:

require File.dirname(__FILE__) + '/test_helper'
require 'fileutils'
require 'io'

require "MyModel.bundle"
OSX::ns_import :MyModel

module MyTestExtensions
  def is_absolute_path(path)
    return /^\/.*/.match(path)
  end

  def parent_directory(file)
    dir = file
    if(! is_absolute_path(dir))
      dir = File.expand_path(dir)
    end
    dir = File.dirname(dir)
    assert is_absolute_path(dir), "Expecting an absolute path with #{dir}"
    return dir
  end

  def assert_NSData_contains_bytes_from_file(file, data)
    assert_not_nil data, "Data should not be nil."
    assert data.bytes, "data should have bytes"
    data.length.times { |i|
      expected = file.getc
      assert_not_nil expected, "Expected only #{i} bytes. Actual data contains more."
      actual = data.bytes.int8_at(i)
      assert_equal expected, actual, "Bytes should be equal at offset #{i} expected #{expected.chr} but was #{actual.chr}"
    }
    expected = file.getc
    raise AssertionFailedError, "Expecting #{expected.chr} at offset #{data.length}" unless expected == nil
  end

end

class TestMyModel < Test::Unit::TestCase
include OSX
include MyTestExtensions

  def this_files_dir
    return parent_directory(__FILE__)
  end

  def setup
    @expectedReq = File.new("#{this_files_dir}/ExpectedMyReq")
    # @expectedReq = File.new("#{this_files_dir}/hello.txt")
    assert File.exist?("#{this_files_dir}/ExpectedMyReq"), "The file [#{@expectedReq.path}] should exist."
  end

  def test_my_model_class_exists
    MyModel
  end

  def test_can_init_instance
    assert MyModel.instancesRespondToSelector(:init), "MyModel Should define :init"
  end

  def test_my_model_can_request_my_data
    myModel = MyModel.alloc.init
    data = myModel.requestMyData 'Some query text'
    assert_NSData_contains_bytes_from_file @expectedReq, data
  end

end

Answer 1

我对Ruby或二进制协议知之甚少,但如果您对iPhone上的单元测试感兴趣,可能需要查看Google Toolbox for Mac.我用它测试我的OpenGL ES应用程序非常成功.

Answer 2

Cliff,从长远来看,你最好投入纯粹的ObjC TDD工具.我已经成功地在fmdb-migration-manager中使用了我自己的rbiphonetest lib,但它的用处可能仅限于库等.即便如此,毫无疑问,"在Cocoa中工作但在UIKit中失败"的场景使rbiphonetest无法使用.希望有一天RubyCocoa可以针对英特尔UIKit库构建,然后我认为它非常有用且坚固.