我正在为我的一个Active Model Serializers编写测试,以确保JSON输出符合我的预期。但是,我无法弄清楚为什么RSpec正在解析我的'预期'输出以省略我的testjobs数组,而我不明白为什么我不能得到'预期'和'得到'输出相等。有一次,我甚至将“得到的”结果复制粘贴到我的“预期”输入中,但仍然收到两条字符串不相等的失败消息。但是,当我使用 == 比较REPL中的这两个字符串时,输出为 true 。如何解决这些问题以获得有效的测试?
RSpec Error:
Failures:
1) TestrunSerializer creates special JSON for the API
Failure/Error: expect(serializer.to_json).to eq('{"testrun":{"id":1,"run_at":null,"started_at":null,"state":"pending","completed_at":null,"testjobs":[{"id":2,"active":false,"testchunk_id":2,"testrun_id":1,"testchunk_name":"flair","testchunk":{"id":15,"name":"flair"}}],"branch":{"id":1,"name":"dev","repository":{"id":321,"url":"fakeurl.com"}}}}')
expected: "{\"testrun\":{\"id\":1,\"run_at\":null,\"started_at\":null,\"state\":\"pending\",\"completed_at\":nu...r\"}}],\"branch\":{\"id\":1,\"name\":\"dev\",\"repository\":{\"id\":321,\"url\":\"fakeurl.com\"}}}}"
got: "{\"testrun\":{\"id\":1,\"run_at\":null,\"started_at\":null,\"state\":\"pending\",\"completed_at\":nu...s\":[],\"branch\":{\"id\":1,\"name\":\"dev\",\"repository\":{\"id\":321,\"url\":\"fakeurl.com\"}}}}"
(compared using ==)
# ./spec/serializers/testrun_spec.rb:11:in `block (2 levels) in <top (required)>'
Finished in 0.79448 seconds (files took 5.63 seconds to load)
1 example, 1 failure
Failed examples:
rspec ./spec/serializers/testrun_spec.rb:8 # TestrunSerializer creates special JSON for the API
这是RSpec测试:
require 'rails_helper'
describe TestrunSerializer, type: :serializer do
let(:repo) { Repository.create(id: 321, url: "fakeurl.com") }
let(:branch) { Branch.create(id: 1,name: "dev", repository_id: repo.id) }
let(:testchunk) { Testchunk.create(id: 15, name: "flair") }
it "creates special JSON for the API" do
serializer = TestrunSerializer.new Testrun.new("id":1, name: "name", "run_at": nil, state: "pending", branch_id: branch.id)
testjob = Testjob.create(id: 8, active: false, testchunk_id: testchunk.id, testrun_id: 1)
expect(serializer.to_json).to eq('{"testrun":{"id":1,"run_at":null,"started_at":null,"state":"pending","completed_at":null,"testjobs":[{"id":2,"active":false,"testchunk_id":2,"testrun_id":1,"testchunk_name":"flair","testchunk":{"id":15,"name":"flair"}}],"branch":{"id":1,"name":"dev","repository":{"id":321,"url":"fakeurl.com"}}}}')
end
end
这是实际的序列化器:
class TestrunSerializer < ActiveModel::Serializer
attributes :id, :run_at, :started_at, :state, :completed_at, :testjobs
has_many :testjobs
has_one :branch
end
使用的技术:Rails 5.1,RSpec 3.6,Ruby 2.4
答案 0 :(得分:0)
您的testjobs
似乎不匹配
completed_at\":nu...r\"}}],\"branch\"
vs
completed_at\":nu...s\":[],
您应该设置规范,以便返回testjobs
。
请注意,diff字符串在中间是cut
- 这是与字符串一起使用时eq匹配器中最烦人的部分之一。
编辑:您可能不会切换到比较数组/散列而不是字符串来获得更好的差异。 expect(serializer).to eq {testrun: "..."}
(在断言中删除to_json
)
答案 1 :(得分:0)
您的测试未通过的原因很简单:在it
块内,您在创建Testrun id (1)
记录时分配了Testjob
,但是{{1}记录不存在。
Testrun
在您调用SomeActiveRecord.new()
之前不会创建任何实际记录,或者您可以为此调用save()
。
SomeActiveRecord.create
所以最终解决方案可能类似于:
some_active_record = SomeActiveRecord.new(...)
some_active_record.save
# or
some_active_record = SomeActiveRecord.create(...)
请查看it "creates special JSON for the API" do
testrun = Testrun.create(id: 1, name: "name", run_at: nil, state: "pending", branch_id: branch.id)
serializer = TestrunSerializer.new(testrun)
testjob = Testjob.create(id: 8, active: false, testchunk_id: testchunk.id, testrun_id: testrun.id)
expect(serializer.to_json).to eq('{"testrun":{"id":1,"run_at":null,"started_at":null,"state":"pending","completed_at":null,"testjobs":[{"id":2,"active":false,"testchunk_id":2,"testrun_id":1,"testchunk_name":"flair","testchunk":{"id":15,"name":"flair"}}],"branch":{"id":1,"name":"dev","repository":{"id":321,"url":"fakeurl.com"}}}}')
end
repo:https://github.com/rails-api/active_model_serializers/blob/v0.10.6/test/action_controller/json/include_test.rb中:json
适配器的测试。
您可以使用active_model_serializers
轻松将测试转换为套件。
如果要测试json输出,则应将测试置于rspec
或controller
规格之下;而不是在序列化器中。因为渲染json是适配器的责任;序列化程序仅为适配器提供其中定义的所有属性和关联。
答案 2 :(得分:-1)
工作方案:
我添加了这条线
serializer.testjobs << testjob
显式地将testjob与对象相关联,现在测试通过了。