使用 RSpec 验证属性是否存在

Question

我的模型中的某些属性具有存在验证，我想在我的规范中添加测试以检查当属性为空时是否生成错误。

我正在使用此代码：

it 'should have a name' do
    expect(@patient.errors[:name].size).to eq(1)
end

但这里是 rspec 命令的结果：

Failures:

  1) Patient should have a name
     Failure/Error: expect(@patient.errors[:name].size).to eq(1)

       expected: 1
            got: 0

       (compared using ==)
     # ./spec/models/patient_spec.rb:11:in `block (2 levels) in '

Finished in 0.03002 seconds (files took 40.54 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/models/patient_spec.rb:10 # Patient should have a name

Answer 1

我发现了我的错误。我需要打电话给@patient.valid？在检查错误之前。

it 'has a name' do
    @patient.valid?
    expect(@patient.errors[:name].size).to eq(1)
end

Answer 2

使用 shoulda，您只需一行即可完成此操作：

Describe Patient do
  # original 'should' validation
  it { should validate_presence_of(:name) }

  # alternative 'expected' validation
  it { is_expected.to validate_presence_of(:name) }
end

使用 RSpec 验证属性是否存在

Validate presence of attributes using RSpec

rspec-rails

rspec3