我正在尝试使用TDD开发我的应用程序,因此我需要首先为数据库列编写失败的测试。但是,当我向模型中的不存在的字段添加内容时,它似乎无论如何都会被分配。我不知道如何让这个测试失败。
Ruby 2.1.1,Rails 4.0.3,rSpec 2.14.1,FactoryGirl 4.4.0
我的模型看起来像这样:
mysql> describe lesson_plans;
+------------+--------------+------+-----+-------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+--------------+------+-----+-------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| user_id | int(11) | NO | | NULL | |
| title | varchar(255) | NO | | Lesson Plan | |
| synopsis | text | YES | | NULL | |
| created_at | datetime | YES | | NULL | |
| updated_at | datetime | YES | | NULL | |
+------------+--------------+------+-----+-------------+----------------+
我想添加“内容”一栏。我的测试目前看起来像这样:
it "should have a content field" do
lesson_plan = build(:lesson_plan, user: @user,
content: "The French Revolution was a period of radical social and political upheaval in France from 1789 to 1799 that profoundly affected French and modern history...")
puts lesson_plan.inspect
end
但是,即使数据库中不存在内容字段,它也会被分配。这是lesson_plan.inspect的输出:
#<LessonPlan id: nil, user_id: 455, title: "The French Revolution",
synopsis: "Background and events leading up to the French Revo...", created_at: nil,
updated_at: nil, content: "The French Revolution was a period of radical socia…">
在列存在之前,如何使此测试失败?另外,为什么lesson_plan id为nil?