Rspec - stub模块方法

Question

如何在模块中存根方法：

module SomeModule
    def method_one
        # do stuff
        something = method_two(some_arg)
        # so more stuff
    end

    def method_two(arg)
        # do stuff
    end
end

我可以很好地隔离测试method_two。

我也想通过存根method_two的返回值来单独测试method_one

shared_examples_for SomeModule do
    it 'does something exciting' do
        # neither of the below work
        # SomeModule.should_receive(:method_two).and_return('MANUAL')
        # SomeModule.stub(:method_two).and_return('MANUAL')

        # expect(described_class.new.method_one).to eq(some_value)
    end
end

describe SomeController do
    include_examples SomeModule
end

SomeController中包含的SomeModule规范会失败，因为method_two会抛出异常(它会尝试执行尚未设定种子的数据库查找)。

在method_one中调用method_two时，如何对其进行存根

Answer 1

shared_examples_for SomeModule do
  let(:instance) { described_class.new }

  it 'does something exciting' do
    instance.should_receive(:method_two).and_return('MANUAL')
    expect(instance.method_one).to eq(some_value)
  end
end

describe SomeController do
  include_examples SomeModule
end

Answer 2

allow_any_instance_of(M).to receive(:foo).and_return(:bar)

Is there a way to stub a method of an included module with Rspec?

这种方法对我很有效。