Rspec 通过范围验证唯一性

使用 RSpec 进行范围验证唯一性的测试

ruby
group :development, :test do
  gem 'rspec-rails', '~> 5.0'
end

bash
rails generate model Article title:string category_id:integer
rails generate rspec:model Article

ruby
require 'rails_helper'
RSpec.describe Article, type: :model do
  it "确保在同一分类下标题是唯一的" do
    category = Category.create(name: '技术')
    Article.create(title: '文章1', category_id: category.id)
    duplicate_article = Article.new(title: '文章1', category_id: category.id)
    expect(duplicate_article).not_to be_valid
  end
  it "在不同分类下标题可以重复" do
    category1 = Category.create(name: '技术')
    category2 = Category.create(name: '生活')
    Article.create(title: '文章1', category_id: category1.id)
    duplicate_article = Article.new(title: '文章1', category_id: category2.id)
    expect(duplicate_article).to be_valid
  end
end

bash
rspec spec/models/article_spec.rb

Finished in 0.2 seconds (files took 1.04 seconds to load)
2 examples, 0 failures