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前天写了文章： [url="http://sg552.iteye.com/blog/1604010"]有webservice参与的系统的单元测试，最好使用mock object[/url] 如果某个mock对象，要求模拟 POST 这样的修改数据的操作，而不是简单的GET 这样的查询，该如何做呢？ 我现在使用的办法，是 使用yaml文件来存储数据，达到简单的模仿 数据库的目的。 例如：require 'yaml' module YamlStoreStrategy YAML_FILE_NAME = "spec/mock_attributes.yaml" private def update_yaml(hash) content = YAML.load(File.open(YAML_FILE_NAME)) content[self.class.name] = hash File.open(YAML_FILE_NAME, 'w') { |file| file.write(content.to_yaml)} end def result_hash_from_yaml content = YAML.load(File.open(YAML_FILE_NAME))[self.class.name] return content end end require 'spec_helper' class SomeMockResource include YamlStoreStrategy def run_private_methods_from_module update_yaml("blablabla" => "foo") result_hash_from_yaml end end describe SomeMockResource do before do @some_mock_resource = SomeMockResource.new end it "should run the private methods from module" do @some_mock_resource.run_private_methods_from_module end it "should update_yaml , then query from yaml" do purpose = "test if the module works" @some_mock_resource.send(:update_yaml,{"name"=>"some resource", "purpose"=> purpose}) @some_mock_resource.send(:result_hash_from_yaml)["purpose"].should == purpose end end SomeMockResource:那么，我们就可以在MockObject中引用这个 module:
require 'spec/support/yaml_store_strategy.rb' class MockServerSettingResource < ServerSettingResource include YamlStoreStrategy def find(params) return [result_hash_from_yaml.merge(params)] end def create(params) updated_hash = result_hash_from_yaml.merge(params) update_yaml(updated_hash) return [updated_hash] end end对该 Mock Object的测试：
require 'spec_helper' describe MockServerSettingResource do describe "create , then query" do it "should create settings "do key_name = "foo" value = "value of the key: foo" resource = MockServerSettingResource.new resource.create({ :name => key_name, :value => value }) result = resource.find({:name => key_name}) result[:name].should == key_name result[:value].should == value end end end 转载地址：http://dwuci.baihongyu.com/