Rails测试因夹具失败，但通过直接对象创建而通过

Question

I have a test:

test 'gift should not be saved with a non-numeric price' do
  @gift = gifts(:gift_without_numeric_price)
  assert_not @gift.save, 'gift was saved with non-numeric name'
end

It uses this fixture:

gift_without_numeric_price:
  name: "pinecones"
  description: "these pinecones smell really good"
  estimated_price: "object"
  link: "www.google.com"

My Gift model looks like this:

validates :estimated_price,
        presence: true,
        numericality: true 

So I was expecting the test to pass since 'object' is not numeric, causing the @gift.save to return false and causing the assert_not to ultimately return true. However, the test fails for some reason. When I use the the direct way of creating a gift object, the test looks like this and the test passes:

test 'gift should not be saved with a non-numeric price' do
  @gift = Gift.new(name: 'aa', description: 'description', link: 'www.google.com', estimated_price: 'object')
  assert_not @gift.save, 'gift was saved with non-numeric name'
end

What am I doing wrong with the fixture?

Answer 1

您可以尝试更改验证：

validates :estimated_price, presence: true,numericality: { only_integer: true }