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