Question

我正在尝试为vote_spec模型编写规范代码。不知道究竟是什么我做错了。我认为它可能是在前一个块中的第一个@vote属性。

验证应该如何运作：

Console
v = Vote.new(value: 1)
v.valid? #=> true

v2 = Vote.new(value: -1)
v2.valid? #=> true

v3 = Vote.new(value: 2)
v3.valid? #=> false

这是错误：

Failure/Error: @vote = Vote.create(:post_id)
 ArgumentError:
   When assigning attributes, you must pass a hash as an argument.

这是我的vote_spec.rb

require 'rails_helper'

describe Vote do

describe "validations" do

    before do
        @vote = Vote.create(:post_id)
        @vote.create(value: 1)
        @vote.create(value: -1)
    end 

    describe "first_validation" do
        it "only allows -1 as a value" do
            expect(@vote.first_validation).to eq(-1)
        end
    end

    describe "second_validation" do
        it "only allows 1 as a value" do
            expect(@vote.second_validation).to eq(1)
        end
    end             
end

端

Answer 1

如果你想测试验证，也许你可以这样做：

describe "validations" do
  it 'is valid if the value is 1' do
    expect(Vote.new(value: 1)).to be_valid
  end    

  it 'is valid if the value is -1' do
    expect(Vote.new(value: -1)).to be_valid
  end  

  [-3, 0, 4].each do |invalid_value|
    it "is not valid if the value is #{invalid_value}" do
      expect(Vote.new(value: invalid_value)).not_to be_valid
    end
  end       
end

Answer 2

Amanjot，

正如Sasha在评论中提到的那样。您可以继续使用以下代码我认为

require 'rails_helper'

describe Vote do

describe "validations" do

    before do
        @first_vote = Vote.create(value: -1) #  Vote.new(value: -1) - should try this too
        @second_vote= Vote.create(value: 1) # Vote.new(value: 1) -  should try this too
    end 

    describe "first_validation" do
        it "only allows -1 as a value" do
            expect(@first_vote.value).to eq(-1)
        end
    end

    describe "second_validation" do
        it "only allows 1 as a value" do
            expect(@second_vote.value).to eq(1)
        end
    end             
end

尝试这样的事情。您需要在投票模型上使用create操作。

rspec vote validations错误：必须将hash作为参数传递

2 个答案: