Question

我的分类模型包含以下内容：

# Mass assignable fields
attr_accessible :name, :classification, :is_shown

# Add validation
validates :name,           :presence => true, :uniqueness => true
validates :classification, :presence => true

使用rspec + capybara，我想测试唯一性验证器。

Taxonomy.create(:name => 'foo', :classification => 'activity').save!(:validate => false)
it { should validate_uniqueness_of(:name).scoped_to(:classification) }

此测试失败，出现以下错误：

Failure/Error: it { should validate_uniqueness_of(:name).scoped_to(:classification) }
Expected errors to include "has already been taken" when name is set to "foo", got errors: ["name has already been taken (\"foo\")", "classification is not included in the list (:activitz)"] (with different value of classification)
 # ./spec/models/taxonomy_spec.rb:14:in `block (3 levels) in <top (required)>'

在我看来，测试应该通过。我错过了什么？

Answer 1

这不是Capybara的问题，因为这是在处理模型规范。我假设您使用的是shoulda matchers gem，以便使用这些特殊的ActiveRecord验证匹配器。

给出一个类似你的例子的模型：

class Taxonomy < ActiveRecord::Base
  validates :name,           :presence => true, :uniqueness => true
  validates :classification, :presence => true
end

您将拥有以下规范：

describe Taxonomy do
  it { should validate_presence_of(:name) }
  it { should validate_uniqueness_of(:name) }
  it { should validate_presence_of(:classification) }
end

但是，如果您确实希望将名称字段的唯一性限定为分类：

class Taxonomy < ActiveRecord::Base
  validates :name,           :presence => true, :uniqueness => { :scope => :classification }
  validates :classification, :presence => true
end

......以及以下规范：

describe Taxonomy do
  it { should validate_presence_of(:name) }
  it { should validate_uniqueness_of(:name).scoped_to(:classification) }
  it { should validate_presence_of(:classification) }
end

使用rspec和capybara测试唯一性 - 当错误看起来正确时不通过？

1 个答案: