16

I'm experimenting with the iPhone SDK and doing some TDD ala Dr. Nic's rbiPhoneTest project. I'm wondering how many, if any, have been successful using this or any other testing framework for iPhone/Cocoa? More important, I'd like to know how to best assert a proprietary binary request/response protocol. The idea is to send a binary request over the network and receive a binary response. Requests and responses are created using byte and'ing and or'ing. I'm using the golden copy pattern to test my request. Here's what I have so far. Don't laugh as I'm new to btoh Objective C and Ruby:

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
4

2 回答 2

11

I don’t know much about Ruby or binary protocols, but if You’re interested in unit testing on iPhone, You might want to check out the Google Toolbox for Mac. I am having great success testing my OpenGL ES application with it.

于 2008-10-12T18:43:22.443 回答
6

Cliff，从长远来看，您最好将时间投资于纯 ObjC TDD 工具。我已经成功地在 fmdb-migration-manager 中使用了我自己的 rbiphonetest 库，但它的用处可能仅限于库等。即使那样，毫无疑问会有足够的“在 Cocoa 中工作但在 UIKit 中失败”的场景使 rbiphonetest 的使用变得可疑。希望有一天 RubyCocoa 可以针对英特尔 UIKit 库构建，然后我认为它将非常有用和强大。

于 2008-11-10T12:44:40.083 回答