假设我有一些我想在不同的上下文或“功能”下测试的场景.
例如,我有一些场景涉及用户访问某些页面并期望某些ajax结果.
但是,在不同的条件或“功能”下,我需要执行不同的“后台”任务,这些任务会改变应用程序的状态.
在这种情况下,我需要一遍又一遍地运行相同的场景,以确保一切都适用于应用程序状态的不同更改.
有没有办法在某处定义场景,然后重用它们？
解决方法
您可以使用
shared examples创建在多个功能中使用的可重用方案.
从relishapp页面获取的基本示例如下.如您所见,在多个功能中使用相同的方案来测试不同的类 – 即运行了6个示例.
- require 'rspec/autorun'
- require "set"
- shared_examples "a collection" do
- let(:collection) { described_class.new([7,2,4]) }
- context "initialized with 3 items" do
- it "says it has three items" do
- collection.size.should eq(3)
- end
- end
- describe "#include?" do
- context "with an an item that is in the collection" do
- it "returns true" do
- collection.include?(7).should be_true
- end
- end
- context "with an an item that is not in the collection" do
- it "returns false" do
- collection.include?(9).should be_false
- end
- end
- end
- end
- describe Array do
- it_behaves_like "a collection"
- end
- describe Set do
- it_behaves_like "a collection"
- end
relishapp页面上有几个示例,包括使用参数运行共享示例(下面复制).我猜(因为我不知道你的确切测试)你应该能够在执行一组例子之前使用参数来设置不同的条件.
- require 'rspec/autorun'
- shared_examples "a measurable object" do |measurement,measurement_methods|
- measurement_methods.each do |measurement_method|
- it "should return #{measurement} from ##{measurement_method}" do
- subject.send(measurement_method).should == measurement
- end
- end
- end
- describe Array,"with 3 items" do
- subject { [1,3] }
- it_should_behave_like "a measurable object",3,[:size,:length]
- end
- describe String,"of 6 characters" do
- subject { "FooBar" }
- it_should_behave_like "a measurable object",6,:length]
- end