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ruby-on-rails - 在 Rails 应用程序中销毁对象时销毁相关记录的测试

转载 作者:行者123 更新时间:2023-12-04 04:10:40 24 4
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我坚持在 Michael Hartls ruby​​ on rails 教程 (http://ruby.railstutorial.org/chapters/user-microposts#code-micropost_dependency_test) 的 list 10.15 中进行测试。我的 user_spec.rb 如下

require 'spec_helper'

describe User do
before { @user = User.new(name: "Example User", email: "user@example.com",password: "foobar", password_confirmation: "foobar") }

subject { @user }

it { should respond_to(:name) }
it { should respond_to(:email) }
it { should respond_to(:password_digest) }
it { should respond_to(:password) }
it { should respond_to(:password_confirmation) }
it { should respond_to(:remember_token) }
it { should respond_to(:admin) }
it { should respond_to(:authenticate) }
it { should respond_to(:microposts) }

it { should be_valid }
it { should_not be_admin }

describe "with admin attribute set to 'true'" do
before do
@user.save!
@user.toggle!(:admin)
end

it { should be_admin }
end

describe "when name is not present" do
before { @user.name = " " }
it { should_not be_valid }
end

describe "when email is not present" do
before { @user.email = " " }
it { should_not be_valid }
end

describe "when name is too long" do
before { @user.name = "a" * 51 }
it { should_not be_valid }
end

describe "when email format is invalid" do
it "should be invalid" do
addresses = %w[user@foo,com user_at_foo.org example.user@foo. foo@bar_baz.com foo@bar+baz.com]
addresses.each do |invalid_address|
@user.email = invalid_address
@user.should_not be_valid
end
end
end

describe "when email format is valid" do
it "should be valid" do
addresses = %w[user@foo.COM A_US-ER@f.b.org first.lst@foo.jp a+b@baz.cn]
addresses.each do |valid_address|
@user.email = valid_address
@user.should be_valid
end
end
end

describe "when email address is already taken" do
before do
user_with_same_email = @user.dup
user_with_same_email.email = @user.email.upcase
user_with_same_email.save
end

it { should_not be_valid }
end

describe "when password is not present" do
before { @user.password = @user.password_confirmation = " "}
it { should_not be_valid }
end

describe "when password doesn't match confirmation" do
before { @user.password_confirmation = "mismatch" }
it { should_not be_valid }
end

describe "when password confirmation is nil" do
before { @user.password_confirmation = nil }
it { should_not be_valid }
end

describe "return value of authenticate method" do
before { @user.save }
let(:found_user) { User.find_by_email(@user.email) }

describe "with valid password" do
it { should == found_user.authenticate(@user.password) }
end

describe "with invalid password" do
let(:user_for_invalid_password) { found_user.authenticate("invalid") }
it { should_not == user_for_invalid_password }
specify { user_for_invalid_password.should be_false }
end
end

describe "with a password that's too short" do
before { @user.password = @user.password_confirmation = "a" * 5 }
it { should be_invalid }
end

describe "remember token" do
before { @user.save }
its(:remember_token) { should_not be_blank }
end

describe "micropost associations" do
before { @user.save }
let!(:older_micropost) do
FactoryGirl.create(:micropost, user:@user, created_at: 1.day.ago)
end
let!(:newer_micropost) do
FactoryGirl.create(:micropost, user:@user, created_at: 1.hour.ago)
end

it "should have the right microposts in the right order" do
@user.microposts.should == [newer_micropost, older_micropost]
end

it "should destroy the associated microposts" do
microposts = @user.microposts.dup
@user.destroy
microposts.should_not be_empty
microposts.each do |micropost|
Micropost.find_by_id(micropost.id).should be_nil
end
end
end

end

当我运行测试时,我收到以下错误:
  1) User micropost associations should destroy the associated microposts
Failure/Error: Micropost.find_by_id(micropost.id).should be_nil
expected: nil
got: #<Micropost id: 2, content: "Lorem ipsum", user_id: nil, created_at: "2012-12-19 09:49:24", updated_at: "2012-12-19 10:49:24">
# ./spec/models/user_spec.rb:133:in `block (4 levels) in <top (required)>'
# ./spec/models/user_spec.rb:132:in `each'
# ./spec/models/user_spec.rb:132:in `block (3 levels) in <top (required)>'

在我的 user.rb 中,我添加了依赖项 :destroy 如下,这是测试通过所必需的。
has_many :microposts, dependent: :destroy

为什么测试仍然失败?

谢谢你

最佳答案

我鼓励你不要做这样的事情:

expect { @user.destroy }.to change(User, :count).by(-1)

这仅测试删除了任何用户,并不能确认删除了正确的记录。相反,我会做这样的事情
@user.destroy
expect { @user.reload }.to raise_error ActiveRecord::RecordNotFound

这确保删除了正确的用户。

关于ruby-on-rails - 在 Rails 应用程序中销毁对象时销毁相关记录的测试,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13953739/

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