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require "cases/helper"
require 'models/post'
require 'models/topic'
require 'models/comment'
require 'models/reply'
require 'models/author'
require 'models/developer'
class NamedScopingTest < ActiveRecord::TestCase
fixtures :posts, :authors, :topics, :comments, :author_addresses
def test_implements_enumerable
assert !Topic.all.empty?
assert_equal Topic.all.to_a, Topic.base
assert_equal Topic.all.to_a, Topic.base.to_a
assert_equal Topic.first, Topic.base.first
assert_equal Topic.all.to_a, Topic.base.map { |i| i }
end
def test_found_items_are_cached
all_posts = Topic.base
assert_queries(1) do
all_posts.collect
all_posts.collect
end
end
def test_reload_expires_cache_of_found_items
all_posts = Topic.base
all_posts.to_a
new_post = Topic.create!
assert !all_posts.include?(new_post)
assert all_posts.reload.include?(new_post)
end
def test_delegates_finds_and_calculations_to_the_base_class
assert !Topic.all.empty?
assert_equal Topic.all.to_a, Topic.base.to_a
assert_equal Topic.first, Topic.base.first
assert_equal Topic.count, Topic.base.count
assert_equal Topic.average(:replies_count), Topic.base.average(:replies_count)
end
def test_method_missing_priority_when_delegating
klazz = Class.new(ActiveRecord::Base) do
self.table_name = "topics"
scope :since, Proc.new { where('written_on >= ?', Time.now - 1.day) }
scope :to, Proc.new { where('written_on <= ?', Time.now) }
end
assert_equal klazz.to.since.to_a, klazz.since.to.to_a
end
def test_scope_should_respond_to_own_methods_and_methods_of_the_proxy
assert Topic.approved.respond_to?(:limit)
assert Topic.approved.respond_to?(:count)
assert Topic.approved.respond_to?(:length)
end
def test_respond_to_respects_include_private_parameter
assert !Topic.approved.respond_to?(:tables_in_string)
assert Topic.approved.respond_to?(:tables_in_string, true)
end
def test_scopes_with_options_limit_finds_to_those_matching_the_criteria_specified
assert !Topic.all.merge!(:where => {:approved => true}).to_a.empty?
assert_equal Topic.all.merge!(:where => {:approved => true}).to_a, Topic.approved
assert_equal Topic.where(:approved => true).count, Topic.approved.count
end
def test_scopes_with_string_name_can_be_composed
# NOTE that scopes defined with a string as a name worked on their own
# but when called on another scope the other scope was completely replaced
assert_equal Topic.replied.approved, Topic.replied.approved_as_string
end
def test_scopes_are_composable
assert_equal((approved = Topic.all.merge!(:where => {:approved => true}).to_a), Topic.approved)
assert_equal((replied = Topic.all.merge!(:where => 'replies_count > 0').to_a), Topic.replied)
assert !(approved == replied)
assert !(approved & replied).empty?
assert_equal approved & replied, Topic.approved.replied
end
def test_procedural_scopes
topics_written_before_the_third = Topic.where('written_on < ?', topics(:third).written_on)
topics_written_before_the_second = Topic.where('written_on < ?', topics(:second).written_on)
assert_not_equal topics_written_before_the_second, topics_written_before_the_third
assert_equal topics_written_before_the_third, Topic.written_before(topics(:third).written_on)
assert_equal topics_written_before_the_second, Topic.written_before(topics(:second).written_on)
end
def test_procedural_scopes_returning_nil
all_topics = Topic.all
assert_equal all_topics, Topic.written_before(nil)
end
def test_scope_with_object
objects = Topic.with_object
assert_operator objects.length, :>, 0
assert objects.all?(&:approved?), 'all objects should be approved'
end
def test_has_many_associations_have_access_to_scopes
assert_not_equal Post.containing_the_letter_a, authors(:david).posts
assert !Post.containing_the_letter_a.empty?
assert_equal authors(:david).posts & Post.containing_the_letter_a, authors(:david).posts.containing_the_letter_a
end
def test_scope_with_STI
assert_equal 3,Post.containing_the_letter_a.count
assert_equal 1,SpecialPost.containing_the_letter_a.count
end
def test_has_many_through_associations_have_access_to_scopes
assert_not_equal Comment.containing_the_letter_e, authors(:david).comments
assert !Comment.containing_the_letter_e.empty?
assert_equal authors(:david).comments & Comment.containing_the_letter_e, authors(:david).comments.containing_the_letter_e
end
def test_scopes_honor_current_scopes_from_when_defined
assert !Post.ranked_by_comments.limit_by(5).empty?
assert !authors(:david).posts.ranked_by_comments.limit_by(5).empty?
assert_not_equal Post.ranked_by_comments.limit_by(5), authors(:david).posts.ranked_by_comments.limit_by(5)
assert_not_equal Post.top(5), authors(:david).posts.top(5)
# Oracle sometimes sorts differently if WHERE condition is changed
assert_equal authors(:david).posts.ranked_by_comments.limit_by(5).to_a.sort_by(&:id), authors(:david).posts.top(5).to_a.sort_by(&:id)
assert_equal Post.ranked_by_comments.limit_by(5), Post.top(5)
end
def test_active_records_have_scope_named__all__
assert !Topic.all.empty?
assert_equal Topic.all.to_a, Topic.base
end
def test_active_records_have_scope_named__scoped__
scope = Topic.where("content LIKE '%Have%'")
assert !scope.empty?
assert_equal scope, Topic.all.merge!(where: "content LIKE '%Have%'")
end
def test_first_and_last_should_allow_integers_for_limit
assert_equal Topic.base.first(2), Topic.base.to_a.first(2)
assert_equal Topic.base.last(2), Topic.base.order("id").to_a.last(2)
end
def test_first_and_last_should_not_use_query_when_results_are_loaded
topics = Topic.base
topics.reload # force load
assert_no_queries do
topics.first
topics.last
end
end
def test_empty_should_not_load_results
topics = Topic.base
assert_queries(2) do
topics.empty? # use count query
topics.collect # force load
topics.empty? # use loaded (no query)
end
end
def test_any_should_not_load_results
topics = Topic.base
assert_queries(2) do
topics.any? # use count query
topics.collect # force load
topics.any? # use loaded (no query)
end
end
def test_any_should_call_proxy_found_if_using_a_block
topics = Topic.base
assert_queries(1) do
topics.expects(:empty?).never
topics.any? { true }
end
end
def test_any_should_not_fire_query_if_scope_loaded
topics = Topic.base
topics.collect # force load
assert_no_queries { assert topics.any? }
end
def test_model_class_should_respond_to_any
assert Topic.any?
Topic.delete_all
assert !Topic.any?
end
def test_many_should_not_load_results
topics = Topic.base
assert_queries(2) do
topics.many? # use count query
topics.collect # force load
topics.many? # use loaded (no query)
end
end
def test_many_should_call_proxy_found_if_using_a_block
topics = Topic.base
assert_queries(1) do
topics.expects(:size).never
topics.many? { true }
end
end
def test_many_should_not_fire_query_if_scope_loaded
topics = Topic.base
topics.collect # force load
assert_no_queries { assert topics.many? }
end
def test_many_should_return_false_if_none_or_one
topics = Topic.base.where(:id => 0)
assert !topics.many?
topics = Topic.base.where(:id => 1)
assert !topics.many?
end
def test_many_should_return_true_if_more_than_one
assert Topic.base.many?
end
def test_model_class_should_respond_to_many
Topic.delete_all
assert !Topic.many?
Topic.create!
assert !Topic.many?
Topic.create!
assert Topic.many?
end
def test_should_build_on_top_of_scope
topic = Topic.approved.build({})
assert topic.approved
end
def test_should_build_new_on_top_of_scope
topic = Topic.approved.new
assert topic.approved
end
def test_should_create_on_top_of_scope
topic = Topic.approved.create({})
assert topic.approved
end
def test_should_create_with_bang_on_top_of_scope
topic = Topic.approved.create!({})
assert topic.approved
end
def test_should_build_on_top_of_chained_scopes
topic = Topic.approved.by_lifo.build({})
assert topic.approved
assert_equal 'lifo', topic.author_name
end
# Method delegation for scope names which look like /\A[a-zA-Z_]\w*[!?]?\z/
# has been done by evaluating a string with a plain def statement. For scope
# names which contain spaces this approach doesn't work.
def test_spaces_in_scope_names
klass = Class.new(ActiveRecord::Base) do
self.table_name = "topics"
scope :"title containing space", -> { where("title LIKE '% %'") }
scope :approved, -> { where(:approved => true) }
end
assert_equal klass.send(:"title containing space"), klass.where("title LIKE '% %'")
assert_equal klass.approved.send(:"title containing space"), klass.approved.where("title LIKE '% %'")
end
def test_find_all_should_behave_like_select
assert_equal Topic.base.to_a.select(&:approved), Topic.base.to_a.find_all(&:approved)
end
def test_rand_should_select_a_random_object_from_proxy
assert_kind_of Topic, Topic.approved.sample
end
def test_should_use_where_in_query_for_scope
assert_equal Developer.where(name: 'Jamis').to_set, Developer.where(id: Developer.jamises).to_set
end
def test_size_should_use_count_when_results_are_not_loaded
topics = Topic.base
assert_queries(1) do
assert_sql(/COUNT/i) { topics.size }
end
end
def test_size_should_use_length_when_results_are_loaded
topics = Topic.base
topics.reload # force load
assert_no_queries do
topics.size # use loaded (no query)
end
end
def test_should_not_duplicates_where_values
where_values = Topic.where("1=1").scope_with_lambda.where_values
assert_equal ["1=1"], where_values
end
def test_chaining_with_duplicate_joins
join = "INNER JOIN comments ON comments.post_id = posts.id"
post = Post.find(1)
assert_equal post.comments.size, Post.joins(join).joins(join).where("posts.id = #{post.id}").size
end
def test_chaining_applies_last_conditions_when_creating
post = Topic.rejected.new
assert !post.approved?
post = Topic.rejected.approved.new
assert post.approved?
post = Topic.approved.rejected.new
assert !post.approved?
post = Topic.approved.rejected.approved.new
assert post.approved?
end
def test_chaining_combines_conditions_when_searching
# Normal hash conditions
assert_equal Topic.where(approved: false).where(approved: true).to_a, Topic.rejected.approved.to_a
assert_equal Topic.where(approved: true).where(approved: false).to_a, Topic.approved.rejected.to_a
# Nested hash conditions with same keys
assert_equal [], Post.with_special_comments.with_very_special_comments.to_a
# Nested hash conditions with different keys
assert_equal [posts(:sti_comments)], Post.with_special_comments.with_post(4).to_a.uniq
end
def test_scopes_batch_finders
assert_equal 3, Topic.approved.count
assert_queries(4) do
Topic.approved.find_each(:batch_size => 1) {|t| assert t.approved? }
end
assert_queries(2) do
Topic.approved.find_in_batches(:batch_size => 2) do |group|
group.each {|t| assert t.approved? }
end
end
end
def test_table_names_for_chaining_scopes_with_and_without_table_name_included
assert_nothing_raised do
Comment.for_first_post.for_first_author.to_a
end
end
def test_scopes_on_relations
# Topic.replied
approved_topics = Topic.all.approved.order('id DESC')
assert_equal topics(:fourth), approved_topics.first
replied_approved_topics = approved_topics.replied
assert_equal topics(:third), replied_approved_topics.first
end
def test_index_on_scope
approved = Topic.approved.order('id ASC')
assert_equal topics(:second), approved[0]
assert approved.loaded?
end
def test_nested_scopes_queries_size
assert_queries(1) do
Topic.approved.by_lifo.replied.written_before(Time.now).to_a
end
end
# Note: these next two are kinda odd because they are essentially just testing that the
# query cache works as it should, but they are here for legacy reasons as they was previously
# a separate cache on association proxies, and these show that that is not necessary.
def test_scopes_are_cached_on_associations
post = posts(:welcome)
Post.cache do
assert_queries(1) { post.comments.containing_the_letter_e.to_a }
assert_no_queries { post.comments.containing_the_letter_e.to_a }
end
end
def test_scopes_with_arguments_are_cached_on_associations
post = posts(:welcome)
Post.cache do
one = assert_queries(1) { post.comments.limit_by(1).to_a }
assert_equal 1, one.size
two = assert_queries(1) { post.comments.limit_by(2).to_a }
assert_equal 2, two.size
assert_no_queries { post.comments.limit_by(1).to_a }
assert_no_queries { post.comments.limit_by(2).to_a }
end
end
def test_scopes_to_get_newest
post = posts(:welcome)
old_last_comment = post.comments.newest
new_comment = post.comments.create(:body => "My new comment")
assert_equal new_comment, post.comments.newest
assert_not_equal old_last_comment, post.comments.newest
end
def test_scopes_are_reset_on_association_reload
post = posts(:welcome)
[:destroy_all, :reset, :delete_all].each do |method|
before = post.comments.containing_the_letter_e
post.association(:comments).send(method)
assert before.object_id != post.comments.containing_the_letter_e.object_id, "CollectionAssociation##{method} should reset the named scopes cache"
end
end
def test_scoped_are_lazy_loaded_if_table_still_does_not_exist
assert_nothing_raised do
require "models/without_table"
end
end
def test_eager_scopes_are_deprecated
klass = Class.new(ActiveRecord::Base)
klass.table_name = 'posts'
assert_deprecated do
klass.scope :welcome_2, klass.where(:id => posts(:welcome).id)
end
assert_equal [posts(:welcome).title], klass.welcome_2.map(&:title)
end
def test_eager_default_scope_relations_are_deprecated
klass = Class.new(ActiveRecord::Base)
klass.table_name = 'posts'
assert_deprecated do
klass.send(:default_scope, klass.where(:id => posts(:welcome).id))
end
assert_equal [posts(:welcome).title], klass.all.map(&:title)
end
def test_subclass_merges_scopes_properly
assert_equal 1, SpecialComment.crazy_all.count
end
end
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