diff options
Diffstat (limited to 'activerecord/test/cases/relations_test.rb')
-rw-r--r-- | activerecord/test/cases/relations_test.rb | 63 |
1 files changed, 60 insertions, 3 deletions
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb index 7149c7d072..090b885dd5 100644 --- a/activerecord/test/cases/relations_test.rb +++ b/activerecord/test/cases/relations_test.rb @@ -19,6 +19,7 @@ require 'models/aircraft' require "models/possession" require "models/reader" require "models/categorization" +require "models/edge" class RelationTest < ActiveRecord::TestCase fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments, @@ -111,15 +112,38 @@ class RelationTest < ActiveRecord::TestCase def test_loaded_first topics = Topic.all.order('id ASC') + topics.to_a # force load - assert_queries(1) do - topics.to_a # force load - 2.times { assert_equal "The First Topic", topics.first.title } + assert_no_queries do + assert_equal "The First Topic", topics.first.title + end + + assert topics.loaded? + end + + def test_loaded_first_with_limit + topics = Topic.all.order('id ASC') + topics.to_a # force load + + assert_no_queries do + assert_equal ["The First Topic", + "The Second Topic of the day"], topics.first(2).map(&:title) end assert topics.loaded? end + def test_first_get_more_than_available + topics = Topic.all.order('id ASC') + unloaded_first = topics.first(10) + topics.to_a # force load + + assert_no_queries do + loaded_first = topics.first(10) + assert_equal unloaded_first, loaded_first + end + end + def test_reload topics = Topic.all @@ -200,6 +224,39 @@ class RelationTest < ActiveRecord::TestCase assert_equal topics(:fifth).title, topics.first.title end + def test_reverse_order_with_function + topics = Topic.order("length(title)").reverse_order + assert_equal topics(:second).title, topics.first.title + end + + def test_reverse_order_with_function_other_predicates + topics = Topic.order("author_name, length(title), id").reverse_order + assert_equal topics(:second).title, topics.first.title + topics = Topic.order("length(author_name), id, length(title)").reverse_order + assert_equal topics(:fifth).title, topics.first.title + end + + def test_reverse_order_with_multiargument_function + assert_raises(ActiveRecord::IrreversibleOrderError) do + Topic.order("concat(author_name, title)").reverse_order + end + end + + def test_reverse_order_with_nulls_first_or_last + assert_raises(ActiveRecord::IrreversibleOrderError) do + Topic.order("title NULLS FIRST").reverse_order + end + assert_raises(ActiveRecord::IrreversibleOrderError) do + Topic.order("title nulls last").reverse_order + end + end + + def test_default_reverse_order_on_table_without_primary_key + assert_raises(ActiveRecord::IrreversibleOrderError) do + Edge.all.reverse_order + end + end + def test_order_with_hash_and_symbol_generates_the_same_sql assert_equal Topic.order(:id).to_sql, Topic.order(:id => :asc).to_sql end |