定义自定义RSpec匹配器

Question

我正在尝试为user_record中定义的哈希创建匹配项。我尝试像在be_a_boolean中一样创建一个matcher.matches（），但是它只返回一个对象。 be_a_boolean不是已定义的对象，因此它当前不起作用。

  def user_record
    {
      email_address: email_address_value,
      date_of_birth: date_value,
      active:        boolean_value
    }
  end    

  def users(count)
    Array.new(count) { user_record }
  end
end    

RSpec.describe DataGenerator do     

  def match_the_shape_of_a_user_record
    # Use `be_a_boolean`, `be_a_date_before_2000` and `be_an_email_address`
    # in the hash passed to `match` below to define this matcher.    

    match(a_hash_including(
                 an_object_having_attributes(:active => be_a_boolean_value), 
                 # :date_of_birth => be_a_date_before_2000, 
                  #:email_address => be_an_email_address 
        ))
  end     

  it "generates user records" do 
    user = DataGenerator.new.user_record
    expect(user).to match_the_shape_of_a_user_record
  end     

  def all_match_the_shape_of_a_user_record
    # Combine the `all` matcher and `match_the_shape_of_a_user_record` here.    

  end    

  it "generates a list of user records" do 
    users = DataGenerator.new.users(4)
    expect(users.to all_match_the_shape_of_a_user_record)
  end 
end