ruby - 我如何在 MiniTest 中 stub ？

Question

在我的测试中，我想为一个类的任何实例 stub 一个 jar 装响应。

它可能看起来像这样:

Book.stubs(:title).any_instance().returns("War and Peace")

然后每当我调用 @book.title 时，它都会返回“ war 与和平”。

有没有办法在 MiniTest 中做到这一点？如果是，你能给我一个示例代码片段吗？

或者我需要像 mocha 这样的东西吗？

MiniTest 确实支持 Mocks，但 Mocks 对我的需要来说太过分了。

Answer 1

  # Create a mock object
  book = MiniTest::Mock.new
  # Set the mock to expect :title, return "War and Piece"
  # (note that unless we call book.verify, minitest will
  # not check that :title was called)
  book.expect :title, "War and Piece"

  # Stub Book.new to return the mock object
  # (only within the scope of the block)
  Book.stub :new, book do
    wp = Book.new # returns the mock object
    wp.title      # => "War and Piece"
  end