您可以使用以下方法创建在多个功能中使用的可重用场景分享的例子 https://www.relishapp.com/rspec/rspec-core/v/2-6/docs/example-groups/shared-examples.
下面是一个取自 relishapp 页面的基本示例。正如您所看到的,在多个功能中使用相同的场景来测试不同的类 - 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(复制如下)。我猜测(因为我不知道您的确切测试)您应该能够在执行这组示例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, 2, 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, [:size, :length]
end