assert / assert_not in ruby-CodePudding

when do we use assert and asert_not in ruby on rails tests, what's the difference between the to? Example:

 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[[email protected] [email protected] [email protected]
                         [email protected] alice [email protected]]
    valid_addresses.each do |valid_address|
      @user.email = valid_address
      assert @user.valid?, "#{valid_address.inspect} should be valid"
    end
  end

CodePudding user response：

Use assert_not when you expect the result to be false.

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

Use assert when you expect the result to be true.

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