红宝石中的assert / assert_not

Question

当我们在rails测试中使用assert和asert_not时，to之间有什么区别？示例：

 test 'email should not be too long' do
    @user.email = 'a' * 244 + '@example.com'
    assert_not @user.valid?
  end

  test 'email validation should accept valid addresses' do
    valid_addresses = %w[user@example.com USER@foo.COM A_US-ER@foo.bar.org
                         first.last@foo.jp alice+bob@baz.cn]
    valid_addresses.each do |valid_address|
      @user.email = valid_address
      assert @user.valid?, "#{valid_address.inspect} should be valid"
    end
  end

Answer 1

当您期望结果是assert_not时，请使用false。

https://apidock.com/rails/ActiveSupport/Testing/Assertions/assert_not

当您期望结果是assert时，请使用true。

https://docs.ruby-lang.org/en/2.1.0/Test/Unit/Assertions.html