Working with association tests, format errors

When I run the test on 'user_friendship_test.rb' I run into errors for the test saying:

1) Error: test: UserFriendship should belong to friend. (UserFriendshipTest): ActiveRecord::Fixture::FormatError: ActiveRecord::Fixture::FormatError

Its the same message for the four tests, now it says a format error, but I can't find it, maybe a new pair of eyes will see it.

require 'test_helper'

class UserFriendshipTest < ActiveSupport::TestCase

should belong_to(:user)
should belong_to(:friend)

# test "the truth" do # assert true test "that creating a friendship works without raising exception" do assert_nothing_raised do UserFriendship.create user: users(:allan), friend: users(:mike) end end

test "that creating a friendship based on user id and friend id works" do
    UserFriendship.create user_id: users(:allan).id, friend_id: users(:mike).id
    assert users(:allan).friends.include?(users(:mike))

end end

Thanks!