Rspec 代理上初始化器私有方法的测试覆盖率 class

Question

我有以下代理 class，我正试图在其上达到 100% 的测试覆盖率。无论我如何构建此 Rspec 测试，simplecov 都会报告未涵盖 klass_constructor 方法。

我将如何更改这些规格以确保涵盖这些规格。我知道初始化器在救援中没有 return 值，即 false 或 true，但是这些 Rspec 存根会发生奇怪的事件。

代理Class代码

class IntegrationProvider
  include IntegrationError
  include IntegrationSettings

  def initialize(provider)
    @provider = provider
    return false unless valid_provider?(@provider)
    return false unless valid_klass_constructor?
    klass_constructor
  end

  def proxy_to
    @provider_klass
  end

  private

  def klass_constructor
    @provider_klass = "#{@provider.capitalize}::#{@provider.capitalize}Provider".safe_constantize
  end
end

包含设置模块

module IntegrationSettings
  def valid_provider?(provider)
    supported_providers.include?(provider)
  end

  def valid_klass_constructor?
    klass_constructor
  end

  private

  def supported_providers
    Rails.cache.fetch('supported_providers', expires_in: 10.days) do
      Provider.where(active: true).pluck(:slug)
    end
  end
end

规格

RSpec.describe IntegrationProvider, type: :integration do
  let!(:provider) { FactoryGirl.create(:provider, :active) }
  let!(:klass) { Provider }

  describe '#initialize' do
    it 'initializes' do
      stub_const("#{provider.slug.capitalize}::#{provider.slug.capitalize}Provider", klass)
      expect(IntegrationProvider.new(provider.slug)).to be_truthy
    end
  end

  describe '#proxy_to' do
    subject { described_class.new(provider.slug) }

    it 'is a proxy' do
      subject.instance_variable_set(:@provider_klass, klass)
      expect(subject.proxy_to).to eq(klass)
    end

    it 'inherits active record' do
      subject.instance_variable_set(:@provider_klass, klass)
      expect(subject.proxy_to.ancestors.include?(ActiveRecord::Base)).to be_truthy
    end
  end

  describe '#klass_constructor' do
    subject { described_class.new(provider.slug) }

    it 'true' do
      stub_const("#{provider.slug.capitalize}::#{provider.slug.capitalize}Provider", klass)
      expect(subject.send(:klass_constructor)).to be_truthy
    end

    it 'assignment' do
      stub_const("#{provider.slug.capitalize}::#{provider.slug.capitalize}Provider", klass)
      subject.send(:klass_constructor)
      expect(subject.instance_variable_get(:@provider_klass)).to eq(klass)
    end
  end
end

Answer 1

这并没有解决问题，但是

"#{@provider.capitalize}::Events::#{@provider.capitalize}Queue".safe_constantize

更干净。

Rspec 代理上初始化器私有方法的测试覆盖率 class

Rspec test coverage on initializer private method on proxy class

rspec

ruby-on-rails

simplecov