Chapter 6 on Test sort products

[oscartzgz]

test 'should sort product by most recent' do
# we will touch some products to update them
products(:two).touch
products(:one)

I implemented the test code and code on model but test fails becuase doesn't return products in expected order, also anyone can explain me what does those two last lines? I understand that the first line updates the datetime on "updated_at" atrribute, but second line, what does?

[madeindjs]

The seconds line is a mistakes and does nothing (corrected on aa1d846)

About the test who fail are you sure that you have implementing recent scope ?

[oscartzgz]

Ok mistake resolved 😆
Yes I have implemented the scope, this is my code on Product model:

scope :recent, lambda {
  order(:updated_at)
}

About test this fails in expected order, the error that returns the test command is:

Failure:
ProductTest#test_should_sort_product_by_most_recent [/app/test/models/product_test.rb:23]:
--- expected
+++ actual
@@ -1 +1 @@
-[#<Product id: 963905356, title: "Cheap TV", price: 0.9999e2, published: false, user_id: 298486374, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:17">, #<Product id: 980190962, title: "TV Plosmo Philopps", price: 0.999999e4, published: false, user_id: 980190962, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:17">, #<Product id: 298486374, title: "Azos Zeenbok", price: 0.49999e3, published: false, user_id: 298486374, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:18">]
+[#<Product id: 980190962, title: "TV Plosmo Philopps", price: 0.999999e4, published: false, user_id: 980190962, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:17">, #<Product id: 963905356, title: "Cheap TV", price: 0.9999e2, published: false, user_id: 298486374, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:17">, #<Product id: 298486374, title: "Azos Zeenbok", price: 0.49999e3, published: false, user_id: 298486374, created_at: "2020-01-09 18:16:17", updated_at: "2020-01-09 18:16:18">]

Thinking a bit, the default order is :asc so the result of :recent scope is [:one, :two, :another_tv] if we don't touch any, but when we touch :two this comes to final so the result will doing [:one, :another_tv, :two]. But in book expected is:

assert_equal [products(:another_tv), products(:one), products(:two)], Product.recent.to_a

I'm right or maybe I losing something?