Patch :update / post :update aborted when testing AMS - active-model-serializers

Question

As I was trying to test out Active Model Serializers, I encountered an issue when attempting to do a patch :update or post :update on ActionController::TestCase. This is the abort output:
deovandski#deovandski-VirtualBox:~/Fakktion$ rake test
rake aborted!
SyntaxError: /home/deovandski/Fakktion/test/controllers/api/v1/genres_controller_test.rb:46: syntax error, unexpected '\n', expecting =>
/home/deovandski/Fakktion/test/controllers/api/v1/genres_controller_test.rb:54: syntax error, unexpected keyword_do_block, expecting keyword_end
/home/deovandski/Fakktion/test/controllers/api/v1/genres_controller_test.rb:58: syntax error, unexpected keyword_end, expecting end-of-input
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:244:in `rescue in load_dependency'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:237:in `load_dependency'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:114:in `block (3 levels) in define'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:114:in `each'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:114:in `block (2 levels) in define'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:113:in `each'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:113:in `block in define'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/sub_test_task.rb:20:in `invoke_rake_task'
/home/deovandski/.rvm/gems/ruby-2.3.0/gems/railties-4.2.6/lib/rails/test_unit/testing.rake:8:in `block in <top (required)>'
Tasks: TOP => test:run
(See full trace by running task with --trace)
Below is the Genres Controller Test with only the test case in question. Setup, Teardown and all other tests can be found through this link.
require 'test_helper'
class Api::V1::GenresControllerTest < ActionController::TestCase
test "API - Update a genre" do
genre = Genre.find_by name: 'test'
genre.name = "mikuchan"
patch :update, id: genre.id, ActiveModel::SerializableResource.new(genre).as_json
genreUpdated = Genre.find_by name: 'mikuchan'
assert_response :success, genreUpdated
end
end
The root seems to be patch :update line from above as the abort states an unexpected /n when it was expecting an =>. However, when I removed id: genre.id, the following error showed up instead:
Api::V1::GenresControllerTest#test_API_-_Update_a_genre:
ActionController::UrlGenerationError: No route matches {:action=>"update", :controller=>"api/v1/genres", :data=>{:id=>"980190963", :type=>"genres", :attributes=>{:name=>"mikuchan", :eligibility_counter=>"0", :posts_count=>"0"}, :relationships=>{:posts=>{:data=>[]}}}}
test/controllers/api/v1/genres_controller_test.rb:46:in `block in <class:GenresControllerTest>'
The above output looks like a correct payload, so the problem seems syntax related. However, the only other way that I found was using genre.save which is not what I am looking for since this procedure only uses ActiveRecord...
With that, what is correct approach for testing post :update on AMS? Also, does the procedure change if I am using :json_api as the adapter?

Answer 1

It was a matter of syntax as the appropriated syntax is:
tempResource = ActiveModel::SerializableResource.new(resource).serializable_hash
post :update, tempResource.merge(id: resource)
This is an example testing for CREATE, SHOW, PATCH and DELETE for a resource:
require 'test_helper'
class Api::V1::GenresControllerTest < ActionController::TestCase
# Called before every test
setup do
#request.headers["Content-Type"] = "application/json; charset=utf-8"
#testGenre = Genre.new(name: 'TEST', eligibility_counter: 0, posts_count: 0)
#testGenre.save
end
# Called after test
def teardown
#testGenre = nil
#apiGenre = nil
#genreSerialized = nil
end
test "Genres - API - Get Index" do
get :index
assert_response_schema('genres/index.json')
end
test "Genres - API - Serializer Validation" do
sampleSenre = Genre.new
serializer = ActiveModel::Serializer.serializer_for(sampleSenre)
assert_equal GenreSerializer, serializer
end
test "Genres - API - Create 200" do
apiGenre = Genre.new(name: 'luka', eligibility_counter: 0, posts_count: 0)
assert_difference('Genre.count', +1) do
post :create, ActiveModel::SerializableResource.new(apiGenre).as_json
end
end
test "Genres - API - Create 422" do
post :create, ActiveModel::SerializableResource.new(#testGenre).as_json
assert_response(422)
end
test "Genres - API - SHOW 200" do
get :show, id: #testGenre
assert_response_schema('genres/show.json')
end
test "Genres - API - UPDATE 200" do
genre = Genre.find_by name: 'test'
genre.name = "mikuchan"
tempGenre = ActiveModel::SerializableResource.new(genre).serializable_hash
post :update, tempGenre.merge(id: genre)
genreUpdated = Genre.find_by name: 'mikuchan'
assert_response :success, genreUpdated
end
test "Genres - API - UPDATE 422" do
genre = Genre.find_by name: 'test'
genre1 = Genre.find_by name: 'movie'
genre.name = "mikuchan"
genre1.name = "mikuchan"
tempGenre = ActiveModel::SerializableResource.new(genre).serializable_hash
tempGenre1 = ActiveModel::SerializableResource.new(genre1).serializable_hash
post :update, tempGenre.merge(id: genre)
post :update, tempGenre1.merge(id: genre1)
assert_response(422)
end
test "Genres - API - DELETE 200" do
assert_difference('Genre.count', -1) do
delete :destroy, id: #testGenre
end
end
test "Genres - API - DELETE 422" do
genre = Genre.find_by name: 'song'
post = Post.first
post.genre = genre
post.save
delete :destroy, id: genre
assert_response(422)
end
end