{"id":2689,"date":"2022-08-30T15:26:57","date_gmt":"2022-08-30T15:26:57","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/02\/06\/switching-from-fixtures-to-factory-girl-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:26:57","modified_gmt":"2022-08-30T15:26:57","slug":"switching-from-fixtures-to-factory-girl-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/switching-from-fixtures-to-factory-girl-collection-of-common-programming-errors\/","title":{"rendered":"switching from fixtures to Factory Girl-Collection of common programming errors"},"content":{"rendered":"

Rails 3.0.3….<\/p>\n

I’m just starting out with Factory Girl, having had little success with the standard fixtures approach. I’ve commented out fixtures :all<\/code> from the test\/test_helper.rb file and have created a factories file.<\/p>\n

My problem is that the sequence feature doesn’t seem to work:<\/p>\n

# test\/factories.rb\nFactory.sequence :clearer_name do |n|\n   \"Clearer_#{n}\"\nend\n\nFactory.define :clearer do |f|\n   f.name Factory.next(:clearer_name)\nend\n<\/code><\/pre>\n
My (functional) test is only slightly different from standard:<\/p>\n
require 'test_helper'\n\nclass ClearersControllerTest < ActionController::TestCase\n   setup do\n      @clearer = Factory.create(:clearer)\n   end\n\ntest \"should get index\" do\n   get :index\n   assert_response :success\n   assert_not_nil assigns(:clearers)\n end\n\n test \"should get new\" do\n   get :new\n   assert_response :success\n end\n\n test \"should create clearer\" do\n   assert_difference('Clearer.count') do\n     post :create, :clearer => @clearer.attributes\n   end\n\n   assert_redirected_to clearer_path(assigns(:clearer))\n end\n<\/code><\/pre>\n
When I run rake test<\/code> I get:<\/p>\n
test_should_create_clearer(ClearersControllerTest):\nActiveRecord::RecordNotUnique: SQLite3::ConstraintException: column name is not unique: INSERT INTO \"clearers\" (\"active\", \"updated_at\", \"name\", \"created_at\") VALUES ('t', '2011-02-20 08:53:37.040200', 'Clearer_1', '2011-02-20 08:53:37.040200')\n<\/code><\/pre>\n
…as if it’s not continuing the sequence.<\/p>\n
Any tips?<\/p>\n
Thanks,<\/p>\n
UPDATE<\/strong>: heres my test file:<\/p>\n
#clearers_controller_test.rb\nrequire 'test_helper'\nclass ClearersControllerTest < ActionController::TestCase\n  setup do\n    @clearer = Factory.create(:clearer)\n  end\n\n  test \"should create clearer\" do\n\n    assert_difference('Clearer.count') do\n      # does not work without this:\n      Clearer.destroy_all \n      post :create, :clearer => @clearer.attributes\n    end\nend\n<\/code><\/pre>\n
I can get this to work by putting Clearer.destroy_all<\/code> at the top of the test method as shown, but that doesn’t feel right.<\/p>\n
    \n
  1. \n
    I see – In your setup, you’re creating a Clearer instance. The Factory.create method builds and saves a new record and returns it.<\/p>\n
    The problem is that you’re then attempting to create another instance in your “should create clearer” test but you’re re-using the existing instance’s attributes.<\/p>\n
    If you want Factory to return fresh attributes (and the next name sequence), you need to ask it for new attributes:<\/p>\n
    test \"should create clearer\" do\n  assert_difference('Clearer.count') do\n    post :create, :clearer => Factory.attributes_for(:clearer)\n  end\nend\n<\/code><\/pre>\n
    You should only be using that existing @clearer instance in the context of an existing record, not where you want a new one.<\/p>\n<\/li>\n
  2. \n
    You aren’t starting with a fresh database is my guess. There’s lots of reasons this could be happen, but you can verify that’s the problem by adding a Clearer.destroy_all in your setup function, before creating one.<\/p>\n<\/li>\n<\/ol>\n
    Originally posted 2014-02-06 03:58:22. <\/small><\/p>","protected":false},"excerpt":{"rendered":"
    Rails 3.0.3…. I’m just starting out with Factory Girl, having had little success with the standard fixtures approach. I’ve commented out fixtures :all from the test\/test_helper.rb file and have created a factories file. My problem is that the sequence feature doesn’t seem to work: # test\/factories.rb Factory.sequence :clearer_name do |n| “Clearer_#{n}” end Factory.define :clearer do […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2689","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=2689"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2689\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=2689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=2689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=2689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}