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require "cases/helper"
require 'models/tag'
require 'models/tagging'
require 'models/post'
require 'models/topic'
require 'models/comment'
require 'models/author'
require 'models/entrant'
require 'models/developer'
require 'models/reply'
require 'models/company'
require 'models/bird'
require 'models/car'
require 'models/engine'
require 'models/tyre'
require 'models/minivan'
class RelationTest < ActiveRecord::TestCase
fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments,
:tags, :taggings, :cars, :minivans
def test_do_not_double_quote_string_id
van = Minivan.last
assert van
assert_equal van.id, Minivan.where(:minivan_id => van).to_a.first.minivan_id
end
def test_do_not_double_quote_string_id_with_array
van = Minivan.last
assert van
assert_equal van, Minivan.where(:minivan_id => [van]).to_a.first
end
def test_bind_values
relation = Post.all
assert_equal [], relation.bind_values
relation2 = relation.bind 'foo'
assert_equal %w{ foo }, relation2.bind_values
assert_equal [], relation.bind_values
end
def test_two_scopes_with_includes_should_not_drop_any_include
car = Car.incl_engines.incl_tyres.first
assert_no_queries { car.tyres.length }
assert_no_queries { car.engines.length }
end
def test_dynamic_finder
x = Post.where('author_id = ?', 1)
assert x.klass.respond_to?(:find_by_id), '@klass should handle dynamic finders'
end
def test_multivalue_where
posts = Post.where('author_id = ? AND id = ?', 1, 1)
assert_equal 1, posts.to_a.size
end
def test_scoped
topics = Topic.all
assert_kind_of ActiveRecord::Relation, topics
assert_equal 4, topics.size
end
def test_to_json
assert_nothing_raised { Bird.all.to_json }
assert_nothing_raised { Bird.all.to_a.to_json }
end
def test_to_yaml
assert_nothing_raised { Bird.all.to_yaml }
assert_nothing_raised { Bird.all.to_a.to_yaml }
end
def test_to_xml
assert_nothing_raised { Bird.all.to_xml }
assert_nothing_raised { Bird.all.to_a.to_xml }
end
def test_scoped_all
topics = Topic.all.to_a
assert_kind_of Array, topics
assert_no_queries { assert_equal 4, topics.size }
end
def test_loaded_all
topics = Topic.all
assert_queries(1) do
2.times { assert_equal 4, topics.to_a.size }
end
assert topics.loaded?
end
def test_scoped_first
topics = Topic.all.order('id ASC')
assert_queries(1) do
2.times { assert_equal "The First Topic", topics.first.title }
end
assert ! topics.loaded?
end
def test_loaded_first
topics = Topic.all.order('id ASC')
assert_queries(1) do
topics.to_a # force load
2.times { assert_equal "The First Topic", topics.first.title }
end
assert topics.loaded?
end
def test_reload
topics = Topic.all
assert_queries(1) do
2.times { topics.to_a }
end
assert topics.loaded?
original_size = topics.to_a.size
Topic.create! :title => 'fake'
assert_queries(1) { topics.reload }
assert_equal original_size + 1, topics.size
assert topics.loaded?
end
def test_finding_with_subquery
relation = Topic.where(:approved => true)
assert_equal relation.to_a, Topic.select('*').from(relation).to_a
assert_equal relation.to_a, Topic.select('subquery.*').from(relation).to_a
assert_equal relation.to_a, Topic.select('a.*').from(relation, :a).to_a
end
def test_finding_with_conditions
assert_equal ["David"], Author.where(:name => 'David').map(&:name)
assert_equal ['Mary'], Author.where(["name = ?", 'Mary']).map(&:name)
assert_equal ['Mary'], Author.where("name = ?", 'Mary').map(&:name)
end
def test_finding_with_order
topics = Topic.order('id')
assert_equal 4, topics.to_a.size
assert_equal topics(:first).title, topics.first.title
end
def test_finding_with_arel_order
topics = Topic.order(Topic.arel_table[:id].asc)
assert_equal 4, topics.to_a.size
assert_equal topics(:first).title, topics.first.title
end
def test_finding_with_assoc_order
topics = Topic.order(:id => :desc)
assert_equal 4, topics.to_a.size
assert_equal topics(:fourth).title, topics.first.title
end
def test_finding_with_reverted_assoc_order
topics = Topic.order(:id => :asc).reverse_order
assert_equal 4, topics.to_a.size
assert_equal topics(:fourth).title, topics.first.title
end
def test_raising_exception_on_invalid_hash_params
assert_raise(ArgumentError) { Topic.order(:name, "id DESC", :id => :DeSc) }
end
def test_finding_last_with_arel_order
topics = Topic.order(Topic.arel_table[:id].asc)
assert_equal topics(:fourth).title, topics.last.title
end
def test_finding_with_order_concatenated
topics = Topic.order('title').order('author_name')
assert_equal 4, topics.to_a.size
assert_equal topics(:fourth).title, topics.first.title
end
def test_finding_with_reorder
topics = Topic.order('author_name').order('title').reorder('id').to_a
topics_titles = topics.map{ |t| t.title }
assert_equal ['The First Topic', 'The Second Topic of the day', 'The Third Topic of the day', 'The Fourth Topic of the day'], topics_titles
end
def test_finding_with_order_and_take
entrants = Entrant.order("id ASC").limit(2).to_a
assert_equal 2, entrants.size
assert_equal entrants(:first).name, entrants.first.name
end
def test_finding_with_cross_table_order_and_limit
tags = Tag.includes(:taggings).
order("tags.name asc", "taggings.taggable_id asc", "REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").
limit(1).to_a
assert_equal 1, tags.length
end
def test_finding_with_complex_order_and_limit
tags = Tag.includes(:taggings).references(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").limit(1).to_a
assert_equal 1, tags.length
end
def test_finding_with_complex_order
tags = Tag.includes(:taggings).references(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").to_a
assert_equal 3, tags.length
end
def test_finding_with_order_limit_and_offset
entrants = Entrant.order("id ASC").limit(2).offset(1)
assert_equal 2, entrants.to_a.size
assert_equal entrants(:second).name, entrants.first.name
entrants = Entrant.order("id ASC").limit(2).offset(2)
assert_equal 1, entrants.to_a.size
assert_equal entrants(:third).name, entrants.first.name
end
def test_finding_with_group
developers = Developer.group("salary").select("salary").to_a
assert_equal 4, developers.size
assert_equal 4, developers.map(&:salary).uniq.size
end
def test_select_with_block
even_ids = Developer.all.select {|d| d.id % 2 == 0 }.map(&:id)
assert_equal [2, 4, 6, 8, 10], even_ids.sort
end
def test_none
assert_no_queries do
assert_equal [], Developer.none
assert_equal [], Developer.all.none
end
end
def test_none_chainable
assert_no_queries do
assert_equal [], Developer.none.where(:name => 'David')
end
end
def test_none_chainable_to_existing_scope_extension_method
assert_no_queries do
assert_equal 1, Topic.anonymous_extension.none.one
end
end
def test_none_chained_to_methods_firing_queries_straight_to_db
assert_no_queries do
assert_equal [], Developer.none.pluck(:id) # => uses select_all
assert_equal 0, Developer.none.delete_all
assert_equal 0, Developer.none.update_all(:name => 'David')
assert_equal 0, Developer.none.delete(1)
assert_equal false, Developer.none.exists?(1)
end
end
def test_null_relation_content_size_methods
assert_no_queries do
assert_equal 0, Developer.none.size
assert_equal 0, Developer.none.count
assert_equal true, Developer.none.empty?
assert_equal false, Developer.none.any?
assert_equal false, Developer.none.many?
end
end
def test_null_relation_calculations_methods
assert_no_queries do
assert_equal 0, Developer.none.count
assert_equal nil, Developer.none.calculate(:average, 'salary')
end
end
def test_null_relation_metadata_methods
assert_equal "", Developer.none.to_sql
assert_equal({}, Developer.none.where_values_hash)
end
def test_joins_with_nil_argument
assert_nothing_raised { DependentFirm.joins(nil).first }
end
def test_finding_with_hash_conditions_on_joined_table
firms = DependentFirm.joins(:account).where({:name => 'RailsCore', :accounts => { :credit_limit => 55..60 }}).to_a
assert_equal 1, firms.size
assert_equal companies(:rails_core), firms.first
end
def test_find_all_with_join
developers_on_project_one = Developer.joins('LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id').
where('project_id=1').to_a
assert_equal 3, developers_on_project_one.length
developer_names = developers_on_project_one.map { |d| d.name }
assert developer_names.include?('David')
assert developer_names.include?('Jamis')
end
def test_find_on_hash_conditions
assert_equal Topic.all.merge!(:where => {:approved => false}).to_a, Topic.where({ :approved => false }).to_a
end
def test_joins_with_string_array
person_with_reader_and_post = Post.joins([
"INNER JOIN categorizations ON categorizations.post_id = posts.id",
"INNER JOIN categories ON categories.id = categorizations.category_id AND categories.type = 'SpecialCategory'"
]
).to_a
assert_equal 1, person_with_reader_and_post.size
end
def test_scoped_responds_to_delegated_methods
relation = Topic.all
["map", "uniq", "sort", "insert", "delete", "update"].each do |method|
assert_respond_to relation, method, "Topic.all should respond to #{method.inspect}"
end
end
def test_respond_to_delegates_to_relation
relation = Topic.all
fake_arel = Struct.new(:responds) {
def respond_to? method, access = false
responds << [method, access]
end
}.new []
relation.extend(Module.new { attr_accessor :arel })
relation.arel = fake_arel
relation.respond_to?(:matching_attributes)
assert_equal [:matching_attributes, false], fake_arel.responds.first
fake_arel.responds = []
relation.respond_to?(:matching_attributes, true)
assert_equal [:matching_attributes, true], fake_arel.responds.first
end
def test_respond_to_dynamic_finders
relation = Topic.all
["find_by_title", "find_by_title_and_author_name", "find_or_create_by_title", "find_or_initialize_by_title_and_author_name"].each do |method|
assert_respond_to relation, method, "Topic.all should respond to #{method.inspect}"
end
end
def test_respond_to_class_methods_and_scopes
assert Topic.all.respond_to?(:by_lifo)
end
def test_find_with_readonly_option
Developer.all.each { |d| assert !d.readonly? }
Developer.all.readonly.each { |d| assert d.readonly? }
end
def test_eager_association_loading_of_stis_with_multiple_references
authors = Author.eager_load(:posts => { :special_comments => { :post => [ :special_comments, :very_special_comment ] } }).
order('comments.body, very_special_comments_posts.body').where('posts.id = 4').to_a
assert_equal [authors(:david)], authors
assert_no_queries do
authors.first.posts.first.special_comments.first.post.special_comments
authors.first.posts.first.special_comments.first.post.very_special_comment
end
end
def test_find_with_preloaded_associations
assert_queries(2) do
posts = Post.preload(:comments).order('posts.id')
assert posts.first.comments.first
end
assert_queries(2) do
posts = Post.preload(:comments).order('posts.id')
assert posts.first.comments.first
end
assert_queries(2) do
posts = Post.preload(:author).order('posts.id')
assert posts.first.author
end
assert_queries(2) do
posts = Post.preload(:author).order('posts.id')
assert posts.first.author
end
assert_queries(3) do
posts = Post.preload(:author, :comments).order('posts.id')
assert posts.first.author
assert posts.first.comments.first
end
end
def test_find_with_included_associations
assert_queries(2) do
posts = Post.includes(:comments).order('posts.id')
assert posts.first.comments.first
end
assert_queries(2) do
posts = Post.all.includes(:comments).order('posts.id')
assert posts.first.comments.first
end
assert_queries(2) do
posts = Post.includes(:author).order('posts.id')
assert posts.first.author
end
assert_queries(3) do
posts = Post.includes(:author, :comments).order('posts.id')
assert posts.first.author
assert posts.first.comments.first
end
end
def test_default_scope_with_conditions_string
assert_equal Developer.where(name: 'David').map(&:id).sort, DeveloperCalledDavid.all.map(&:id).sort
assert_nil DeveloperCalledDavid.create!.name
end
def test_default_scope_with_conditions_hash
assert_equal Developer.where(name: 'Jamis').map(&:id).sort, DeveloperCalledJamis.all.map(&:id).sort
assert_equal 'Jamis', DeveloperCalledJamis.create!.name
end
def test_default_scoping_finder_methods
developers = DeveloperCalledDavid.order('id').map(&:id).sort
assert_equal Developer.where(name: 'David').map(&:id).sort, developers
end
def test_loading_with_one_association
posts = Post.preload(:comments)
post = posts.find { |p| p.id == 1 }
assert_equal 2, post.comments.size
assert post.comments.include?(comments(:greetings))
post = Post.where("posts.title = 'Welcome to the weblog'").preload(:comments).first
assert_equal 2, post.comments.size
assert post.comments.include?(comments(:greetings))
posts = Post.preload(:last_comment)
post = posts.find { |p| p.id == 1 }
assert_equal Post.find(1).last_comment, post.last_comment
end
def test_loading_with_one_association_with_non_preload
posts = Post.eager_load(:last_comment).order('comments.id DESC')
post = posts.find { |p| p.id == 1 }
assert_equal Post.find(1).last_comment, post.last_comment
end
def test_dynamic_find_by_attributes
david = authors(:david)
author = Author.preload(:taggings).find_by_id(david.id)
expected_taggings = taggings(:welcome_general, :thinking_general)
assert_no_queries do
assert_equal expected_taggings, author.taggings.uniq.sort_by { |t| t.id }
end
authors = Author.all
assert_equal david, authors.find_by_id_and_name(david.id, david.name)
assert_equal david, authors.find_by_id_and_name!(david.id, david.name)
end
def test_dynamic_find_by_attributes_bang
author = Author.all.find_by_id!(authors(:david).id)
assert_equal "David", author.name
assert_raises(ActiveRecord::RecordNotFound) { Author.all.find_by_id_and_name!(20, 'invalid') }
end
def test_find_id
authors = Author.all
david = authors.find(authors(:david).id)
assert_equal 'David', david.name
assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find('42') }
end
def test_find_ids
authors = Author.order('id ASC')
results = authors.find(authors(:david).id, authors(:mary).id)
assert_kind_of Array, results
assert_equal 2, results.size
assert_equal 'David', results[0].name
assert_equal 'Mary', results[1].name
assert_equal results, authors.find([authors(:david).id, authors(:mary).id])
assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find(authors(:david).id, '42') }
assert_raises(ActiveRecord::RecordNotFound) { authors.find(['42', 43]) }
end
def test_find_in_empty_array
authors = Author.all.where(:id => [])
assert_blank authors.to_a
end
def test_where_with_ar_object
author = Author.first
authors = Author.all.where(:id => author)
assert_equal 1, authors.to_a.length
end
def test_find_with_list_of_ar
author = Author.first
authors = Author.find([author])
assert_equal author, authors.first
end
class Mary < Author; end
def test_find_by_classname
Author.create!(:name => Mary.name)
assert_equal 1, Author.where(:name => Mary).size
end
def test_find_by_id_with_list_of_ar
author = Author.first
authors = Author.find_by_id([author])
assert_equal author, authors
end
def test_find_all_using_where_twice_should_or_the_relation
david = authors(:david)
relation = Author.unscoped
relation = relation.where(:name => david.name)
relation = relation.where(:name => 'Santiago')
relation = relation.where(:id => david.id)
assert_equal [], relation.to_a
end
def test_multi_where_ands_queries
relation = Author.unscoped
david = authors(:david)
sql = relation.where(:name => david.name).where(:name => 'Santiago').to_sql
assert_match('AND', sql)
end
def test_find_all_with_multiple_should_use_and
david = authors(:david)
relation = [
{ :name => david.name },
{ :name => 'Santiago' },
{ :name => 'tenderlove' },
].inject(Author.unscoped) do |memo, param|
memo.where(param)
end
assert_equal [], relation.to_a
end
def test_find_all_using_where_with_relation
david = authors(:david)
# switching the lines below would succeed in current rails
# assert_queries(2) {
assert_queries(1) {
relation = Author.where(:id => Author.where(:id => david.id))
assert_equal [david], relation.to_a
}
end
def test_find_all_using_where_with_relation_and_alternate_primary_key
cool_first = minivans(:cool_first)
# switching the lines below would succeed in current rails
# assert_queries(2) {
assert_queries(1) {
relation = Minivan.where(:minivan_id => Minivan.where(:name => cool_first.name))
assert_equal [cool_first], relation.to_a
}
end
def test_find_all_using_where_with_relation_does_not_alter_select_values
david = authors(:david)
subquery = Author.where(:id => david.id)
assert_queries(1) {
relation = Author.where(:id => subquery)
assert_equal [david], relation.to_a
}
assert_equal 0, subquery.select_values.size
end
def test_find_all_using_where_with_relation_with_joins
david = authors(:david)
assert_queries(1) {
relation = Author.where(:id => Author.joins(:posts).where(:id => david.id))
assert_equal [david], relation.to_a
}
end
def test_find_all_using_where_with_relation_with_select_to_build_subquery
david = authors(:david)
assert_queries(1) {
relation = Author.where(:name => Author.where(:id => david.id).select(:name))
assert_equal [david], relation.to_a
}
end
def test_exists
davids = Author.where(:name => 'David')
assert davids.exists?
assert davids.exists?(authors(:david).id)
assert ! davids.exists?(authors(:mary).id)
assert ! davids.exists?("42")
assert ! davids.exists?(42)
assert ! davids.exists?(davids.new)
fake = Author.where(:name => 'fake author')
assert ! fake.exists?
assert ! fake.exists?(authors(:david).id)
end
def test_last
authors = Author.all
assert_equal authors(:bob), authors.last
end
def test_destroy_all
davids = Author.where(:name => 'David')
# Force load
assert_equal [authors(:david)], davids.to_a
assert davids.loaded?
assert_difference('Author.count', -1) { davids.destroy_all }
assert_equal [], davids.to_a
assert davids.loaded?
end
def test_delete_all
davids = Author.where(:name => 'David')
assert_difference('Author.count', -1) { davids.delete_all }
assert ! davids.loaded?
end
def test_delete_all_loaded
davids = Author.where(:name => 'David')
# Force load
assert_equal [authors(:david)], davids.to_a
assert davids.loaded?
assert_difference('Author.count', -1) { davids.delete_all }
assert_equal [], davids.to_a
assert davids.loaded?
end
def test_delete_all_limit_error
assert_raises(ActiveRecord::ActiveRecordError) { Author.limit(10).delete_all }
end
def test_select_takes_a_variable_list_of_args
david = developers(:david)
developer = Developer.where(id: david.id).select(:name, :salary).first
assert_equal david.name, developer.name
assert_equal david.salary, developer.salary
end
def test_select_argument_error
assert_raises(ArgumentError) { Developer.select }
end
def test_relation_merging
devs = Developer.where("salary >= 80000").merge(Developer.limit(2)).merge(Developer.order('id ASC').where("id < 3"))
assert_equal [developers(:david), developers(:jamis)], devs.to_a
dev_with_count = Developer.limit(1).merge(Developer.order('id DESC')).merge(Developer.select('developers.*'))
assert_equal [developers(:poor_jamis)], dev_with_count.to_a
end
def test_relation_merging_with_arel_equalities_keeps_last_equality
devs = Developer.where(Developer.arel_table[:salary].eq(80000)).merge(
Developer.where(Developer.arel_table[:salary].eq(9000))
)
assert_equal [developers(:poor_jamis)], devs.to_a
end
def test_relation_merging_with_arel_equalities_keeps_last_equality_with_non_attribute_left_hand
salary_attr = Developer.arel_table[:salary]
devs = Developer.where(
Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(80000)
).merge(
Developer.where(
Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(9000)
)
)
assert_equal [developers(:poor_jamis)], devs.to_a
end
def test_relation_merging_with_eager_load
relations = []
relations << Post.order('comments.id DESC').merge(Post.eager_load(:last_comment)).merge(Post.all)
relations << Post.eager_load(:last_comment).merge(Post.order('comments.id DESC')).merge(Post.all)
relations.each do |posts|
post = posts.find { |p| p.id == 1 }
assert_equal Post.find(1).last_comment, post.last_comment
end
end
def test_relation_merging_with_locks
devs = Developer.lock.where("salary >= 80000").order("id DESC").merge(Developer.limit(2))
assert_present devs.locked
end
def test_relation_merging_with_preload
[Post.all.merge(Post.preload(:author)), Post.preload(:author).merge(Post.all)].each do |posts|
assert_queries(2) { assert posts.first.author }
end
end
def test_relation_merging_with_joins
comments = Comment.joins(:post).where(:body => 'Thank you for the welcome').merge(Post.where(:body => 'Such a lovely day'))
assert_equal 1, comments.count
end
def test_relation_merging_with_association
assert_queries(2) do # one for loading post, and another one merged query
post = Post.where(:body => 'Such a lovely day').first
comments = Comment.where(:body => 'Thank you for the welcome').merge(post.comments)
assert_equal 1, comments.count
end
end
def test_count
posts = Post.all
assert_equal 11, posts.count
assert_equal 11, posts.count(:all)
assert_equal 11, posts.count(:id)
assert_equal 1, posts.where('comments_count > 1').count
assert_equal 9, posts.where(:comments_count => 0).count
end
def test_count_with_distinct
posts = Post.all
assert_equal 3, posts.count(:comments_count, :distinct => true)
assert_equal 11, posts.count(:comments_count, :distinct => false)
assert_equal 3, posts.select(:comments_count).count(:distinct => true)
assert_equal 11, posts.select(:comments_count).count(:distinct => false)
end
def test_count_explicit_columns
Post.update_all(:comments_count => nil)
posts = Post.all
assert_equal [0], posts.select('comments_count').where('id is not null').group('id').order('id').count.values.uniq
assert_equal 0, posts.where('id is not null').select('comments_count').count
assert_equal 11, posts.select('comments_count').count('id')
assert_equal 0, posts.select('comments_count').count
assert_equal 0, posts.count(:comments_count)
assert_equal 0, posts.count('comments_count')
end
def test_multiple_selects
post = Post.all.select('comments_count').select('title').order("id ASC").first
assert_equal "Welcome to the weblog", post.title
assert_equal 2, post.comments_count
end
def test_size
posts = Post.all
assert_queries(1) { assert_equal 11, posts.size }
assert ! posts.loaded?
best_posts = posts.where(:comments_count => 0)
best_posts.to_a # force load
assert_no_queries { assert_equal 9, best_posts.size }
end
def test_size_with_limit
posts = Post.limit(10)
assert_queries(1) { assert_equal 10, posts.size }
assert ! posts.loaded?
best_posts = posts.where(:comments_count => 0)
best_posts.to_a # force load
assert_no_queries { assert_equal 9, best_posts.size }
end
def test_size_with_zero_limit
posts = Post.limit(0)
assert_no_queries { assert_equal 0, posts.size }
assert ! posts.loaded?
posts.to_a # force load
assert_no_queries { assert_equal 0, posts.size }
end
def test_empty_with_zero_limit
posts = Post.limit(0)
assert_no_queries { assert_equal true, posts.empty? }
assert ! posts.loaded?
end
def test_count_complex_chained_relations
posts = Post.select('comments_count').where('id is not null').group("author_id").where("comments_count > 0")
expected = { 1 => 2 }
assert_equal expected, posts.count
end
def test_empty
posts = Post.all
assert_queries(1) { assert_equal false, posts.empty? }
assert ! posts.loaded?
no_posts = posts.where(:title => "")
assert_queries(1) { assert_equal true, no_posts.empty? }
assert ! no_posts.loaded?
best_posts = posts.where(:comments_count => 0)
best_posts.to_a # force load
assert_no_queries { assert_equal false, best_posts.empty? }
end
def test_empty_complex_chained_relations
posts = Post.select("comments_count").where("id is not null").group("author_id").where("comments_count > 0")
assert_queries(1) { assert_equal false, posts.empty? }
assert ! posts.loaded?
no_posts = posts.where(:title => "")
assert_queries(1) { assert_equal true, no_posts.empty? }
assert ! no_posts.loaded?
end
def test_any
posts = Post.all
# This test was failing when run on its own (as opposed to running the entire suite).
# The second line in the assert_queries block was causing visit_Arel_Attributes_Attribute
# in Arel::Visitors::ToSql to trigger a SHOW TABLES query. Running that line here causes
# the SHOW TABLES result to be cached so we don't have to do it again in the block.
#
# This is obviously a rubbish fix but it's the best I can come up with for now...
posts.where(:id => nil).any?
assert_queries(3) do
assert posts.any? # Uses COUNT()
assert ! posts.where(:id => nil).any?
assert posts.any? {|p| p.id > 0 }
assert ! posts.any? {|p| p.id <= 0 }
end
assert posts.loaded?
end
def test_many
posts = Post.all
assert_queries(2) do
assert posts.many? # Uses COUNT()
assert posts.many? {|p| p.id > 0 }
assert ! posts.many? {|p| p.id < 2 }
end
assert posts.loaded?
end
def test_many_with_limits
posts = Post.all
assert posts.many?
assert ! posts.limit(1).many?
end
def test_build
posts = Post.all
post = posts.new
assert_kind_of Post, post
end
def test_scoped_build
posts = Post.where(:title => 'You told a lie')
post = posts.new
assert_kind_of Post, post
assert_equal 'You told a lie', post.title
end
def test_create
birds = Bird.all
sparrow = birds.create
assert_kind_of Bird, sparrow
assert !sparrow.persisted?
hen = birds.where(:name => 'hen').create
assert hen.persisted?
assert_equal 'hen', hen.name
end
def test_create_bang
birds = Bird.all
assert_raises(ActiveRecord::RecordInvalid) { birds.create! }
hen = birds.where(:name => 'hen').create!
assert_kind_of Bird, hen
assert hen.persisted?
assert_equal 'hen', hen.name
end
def test_first_or_create
parrot = Bird.where(:color => 'green').first_or_create(:name => 'parrot')
assert_kind_of Bird, parrot
assert parrot.persisted?
assert_equal 'parrot', parrot.name
assert_equal 'green', parrot.color
same_parrot = Bird.where(:color => 'green').first_or_create(:name => 'parakeet')
assert_kind_of Bird, same_parrot
assert same_parrot.persisted?
assert_equal parrot, same_parrot
end
def test_first_or_create_with_no_parameters
parrot = Bird.where(:color => 'green').first_or_create
assert_kind_of Bird, parrot
assert !parrot.persisted?
assert_equal 'green', parrot.color
end
def test_first_or_create_with_block
parrot = Bird.where(:color => 'green').first_or_create { |bird| bird.name = 'parrot' }
assert_kind_of Bird, parrot
assert parrot.persisted?
assert_equal 'green', parrot.color
assert_equal 'parrot', parrot.name
same_parrot = Bird.where(:color => 'green').first_or_create { |bird| bird.name = 'parakeet' }
assert_equal parrot, same_parrot
end
def test_first_or_create_with_array
several_green_birds = Bird.where(:color => 'green').first_or_create([{:name => 'parrot'}, {:name => 'parakeet'}])
assert_kind_of Array, several_green_birds
several_green_birds.each { |bird| assert bird.persisted? }
same_parrot = Bird.where(:color => 'green').first_or_create([{:name => 'hummingbird'}, {:name => 'macaw'}])
assert_kind_of Bird, same_parrot
assert_equal several_green_birds.first, same_parrot
end
def test_first_or_create_bang_with_valid_options
parrot = Bird.where(:color => 'green').first_or_create!(:name => 'parrot')
assert_kind_of Bird, parrot
assert parrot.persisted?
assert_equal 'parrot', parrot.name
assert_equal 'green', parrot.color
same_parrot = Bird.where(:color => 'green').first_or_create!(:name => 'parakeet')
assert_kind_of Bird, same_parrot
assert same_parrot.persisted?
assert_equal parrot, same_parrot
end
def test_first_or_create_bang_with_invalid_options
assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create!(:pirate_id => 1) }
end
def test_first_or_create_bang_with_no_parameters
assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create! }
end
def test_first_or_create_bang_with_valid_block
parrot = Bird.where(:color => 'green').first_or_create! { |bird| bird.name = 'parrot' }
assert_kind_of Bird, parrot
assert parrot.persisted?
assert_equal 'green', parrot.color
assert_equal 'parrot', parrot.name
same_parrot = Bird.where(:color => 'green').first_or_create! { |bird| bird.name = 'parakeet' }
assert_equal parrot, same_parrot
end
def test_first_or_create_bang_with_invalid_block
assert_raise(ActiveRecord::RecordInvalid) do
Bird.where(:color => 'green').first_or_create! { |bird| bird.pirate_id = 1 }
end
end
def test_first_or_create_with_valid_array
several_green_birds = Bird.where(:color => 'green').first_or_create!([{:name => 'parrot'}, {:name => 'parakeet'}])
assert_kind_of Array, several_green_birds
several_green_birds.each { |bird| assert bird.persisted? }
same_parrot = Bird.where(:color => 'green').first_or_create!([{:name => 'hummingbird'}, {:name => 'macaw'}])
assert_kind_of Bird, same_parrot
assert_equal several_green_birds.first, same_parrot
end
def test_first_or_create_with_invalid_array
assert_raises(ActiveRecord::RecordInvalid) { Bird.where(:color => 'green').first_or_create!([ {:name => 'parrot'}, {:pirate_id => 1} ]) }
end
def test_first_or_initialize
parrot = Bird.where(:color => 'green').first_or_initialize(:name => 'parrot')
assert_kind_of Bird, parrot
assert !parrot.persisted?
assert parrot.valid?
assert parrot.new_record?
assert_equal 'parrot', parrot.name
assert_equal 'green', parrot.color
end
def test_first_or_initialize_with_no_parameters
parrot = Bird.where(:color => 'green').first_or_initialize
assert_kind_of Bird, parrot
assert !parrot.persisted?
assert !parrot.valid?
assert parrot.new_record?
assert_equal 'green', parrot.color
end
def test_first_or_initialize_with_block
parrot = Bird.where(:color => 'green').first_or_initialize { |bird| bird.name = 'parrot' }
assert_kind_of Bird, parrot
assert !parrot.persisted?
assert parrot.valid?
assert parrot.new_record?
assert_equal 'green', parrot.color
assert_equal 'parrot', parrot.name
end
def test_find_or_create_by
assert_nil Bird.find_by(name: 'bob')
bird = Bird.find_or_create_by(name: 'bob')
assert bird.persisted?
assert_equal bird, Bird.find_or_create_by(name: 'bob')
end
def test_find_or_create_by_with_create_with
assert_nil Bird.find_by(name: 'bob')
bird = Bird.create_with(color: 'green').find_or_create_by(name: 'bob')
assert bird.persisted?
assert_equal 'green', bird.color
assert_equal bird, Bird.create_with(color: 'blue').find_or_create_by(name: 'bob')
end
def test_find_or_create_by!
assert_raises(ActiveRecord::RecordInvalid) { Bird.find_or_create_by!(color: 'green') }
end
def test_find_or_initialize_by
assert_nil Bird.find_by(name: 'bob')
bird = Bird.find_or_initialize_by(name: 'bob')
assert bird.new_record?
bird.save!
assert_equal bird, Bird.find_or_initialize_by(name: 'bob')
end
def test_explicit_create_scope
hens = Bird.where(:name => 'hen')
assert_equal 'hen', hens.new.name
hens = hens.create_with(:name => 'cock')
assert_equal 'cock', hens.new.name
end
def test_except
relation = Post.where(:author_id => 1).order('id ASC').limit(1)
assert_equal [posts(:welcome)], relation.to_a
author_posts = relation.except(:order, :limit)
assert_equal Post.where(:author_id => 1).to_a, author_posts.to_a
all_posts = relation.except(:where, :order, :limit)
assert_equal Post.all, all_posts
end
def test_only
relation = Post.where(:author_id => 1).order('id ASC').limit(1)
assert_equal [posts(:welcome)], relation.to_a
author_posts = relation.only(:where)
assert_equal Post.where(:author_id => 1).to_a, author_posts.to_a
all_posts = relation.only(:limit)
assert_equal Post.limit(1).to_a.first, all_posts.first
end
def test_anonymous_extension
relation = Post.where(:author_id => 1).order('id ASC').extending do
def author
'lifo'
end
end
assert_equal "lifo", relation.author
assert_equal "lifo", relation.limit(1).author
end
def test_named_extension
relation = Post.where(:author_id => 1).order('id ASC').extending(Post::NamedExtension)
assert_equal "lifo", relation.author
assert_equal "lifo", relation.limit(1).author
end
def test_order_by_relation_attribute
assert_equal Post.order(Post.arel_table[:title]).to_a, Post.order("title").to_a
end
def test_default_scope_order_with_scope_order
assert_equal 'honda', CoolCar.order_using_new_style.limit(1).first.name
assert_equal 'honda', FastCar.order_using_new_style.limit(1).first.name
end
def test_order_using_scoping
car1 = CoolCar.order('id DESC').scoping do
CoolCar.all.merge!(:order => 'id asc').first
end
assert_equal 'honda', car1.name
car2 = FastCar.order('id DESC').scoping do
FastCar.all.merge!(:order => 'id asc').first
end
assert_equal 'honda', car2.name
end
def test_unscoped_block_style
assert_equal 'honda', CoolCar.unscoped { CoolCar.order_using_new_style.limit(1).first.name}
assert_equal 'honda', FastCar.unscoped { FastCar.order_using_new_style.limit(1).first.name}
end
def test_intersection_with_array
relation = Author.where(:name => "David")
rails_author = relation.first
assert_equal [rails_author], [rails_author] & relation
assert_equal [rails_author], relation & [rails_author]
end
def test_primary_key
assert_equal "id", Post.all.primary_key
end
def test_eager_loading_with_conditions_on_joins
scope = Post.includes(:comments)
# This references the comments table, and so it should cause the comments to be eager
# loaded via a JOIN, rather than by subsequent queries.
scope = scope.joins(
Post.arel_table.create_join(
Post.arel_table,
Post.arel_table.create_on(Comment.arel_table[:id].eq(3))
)
)
assert_deprecated do
assert scope.eager_loading?
end
end
def test_ordering_with_extra_spaces
assert_equal authors(:david), Author.order('id DESC , name DESC').last
end
def test_update_all_with_blank_argument
assert_raises(ArgumentError) { Comment.update_all({}) }
end
def test_update_all_with_joins
comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id)
count = comments.count
assert_equal count, comments.update_all(:post_id => posts(:thinking).id)
assert_equal posts(:thinking), comments(:greetings).post
end
def test_update_all_with_joins_and_limit
comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).limit(1)
assert_equal 1, comments.update_all(:post_id => posts(:thinking).id)
end
def test_update_all_with_joins_and_limit_and_order
comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).order('comments.id').limit(1)
assert_equal 1, comments.update_all(:post_id => posts(:thinking).id)
assert_equal posts(:thinking), comments(:greetings).post
assert_equal posts(:welcome), comments(:more_greetings).post
end
def test_update_all_with_joins_and_offset
all_comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id)
count = all_comments.count
comments = all_comments.offset(1)
assert_equal count - 1, comments.update_all(:post_id => posts(:thinking).id)
end
def test_update_all_with_joins_and_offset_and_order
all_comments = Comment.joins(:post).where('posts.id' => posts(:welcome).id).order('posts.id', 'comments.id')
count = all_comments.count
comments = all_comments.offset(1)
assert_equal count - 1, comments.update_all(:post_id => posts(:thinking).id)
assert_equal posts(:thinking), comments(:more_greetings).post
assert_equal posts(:welcome), comments(:greetings).post
end
def test_uniq
tag1 = Tag.create(:name => 'Foo')
tag2 = Tag.create(:name => 'Foo')
query = Tag.select(:name).where(:id => [tag1.id, tag2.id])
assert_equal ['Foo', 'Foo'], query.map(&:name)
assert_sql(/DISTINCT/) do
assert_equal ['Foo'], query.uniq.map(&:name)
end
assert_sql(/DISTINCT/) do
assert_equal ['Foo'], query.uniq(true).map(&:name)
end
assert_equal ['Foo', 'Foo'], query.uniq(true).uniq(false).map(&:name)
end
def test_references_triggers_eager_loading
scope = Post.includes(:comments)
assert !scope.eager_loading?
assert scope.references(:comments).eager_loading?
end
def test_references_doesnt_trigger_eager_loading_if_reference_not_included
scope = Post.references(:comments)
assert !scope.eager_loading?
end
def test_automatically_added_where_references
scope = Post.where(:comments => { :body => "Bla" })
assert_equal ['comments'], scope.references_values
scope = Post.where('comments.body' => 'Bla')
assert_equal ['comments'], scope.references_values
end
def test_automatically_added_having_references
scope = Post.having(:comments => { :body => "Bla" })
assert_equal ['comments'], scope.references_values
scope = Post.having('comments.body' => 'Bla')
assert_equal ['comments'], scope.references_values
end
def test_automatically_added_order_references
scope = Post.order('comments.body')
assert_equal ['comments'], scope.references_values
scope = Post.order('comments.body', 'yaks.body')
assert_equal ['comments', 'yaks'], scope.references_values
# Don't infer yaks, let's not go down that road again...
scope = Post.order('comments.body, yaks.body')
assert_equal ['comments'], scope.references_values
scope = Post.order('comments.body asc')
assert_equal ['comments'], scope.references_values
scope = Post.order('foo(comments.body)')
assert_equal [], scope.references_values
end
def test_presence
topics = Topic.all
# the first query is triggered because there are no topics yet.
assert_queries(1) { assert topics.present? }
# checking if there are topics is used before you actually display them,
# thus it shouldn't invoke an extra count query.
assert_no_queries { assert topics.present? }
assert_no_queries { assert !topics.blank? }
# shows count of topics and loops after loading the query should not trigger extra queries either.
assert_no_queries { topics.size }
assert_no_queries { topics.length }
assert_no_queries { topics.each }
# count always trigger the COUNT query.
assert_queries(1) { topics.count }
assert topics.loaded?
end
test "find_by with hash conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by(author_id: 2)
end
test "find_by with non-hash conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by("author_id = 2")
end
test "find_by with multi-arg conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by('author_id = ?', 2)
end
test "find_by returns nil if the record is missing" do
assert_equal nil, Post.all.find_by("1 = 0")
end
test "find_by doesn't have implicit ordering" do
assert_sql(/^((?!ORDER).)*$/) { Post.find_by(author_id: 2) }
end
test "find_by! with hash conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by!(author_id: 2)
end
test "find_by! with non-hash conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by!("author_id = 2")
end
test "find_by! with multi-arg conditions returns the first matching record" do
assert_equal posts(:eager_other), Post.order(:id).find_by!('author_id = ?', 2)
end
test "find_by! doesn't have implicit ordering" do
assert_sql(/^((?!ORDER).)*$/) { Post.find_by!(author_id: 2) }
end
test "find_by! raises RecordNotFound if the record is missing" do
assert_raises(ActiveRecord::RecordNotFound) do
Post.all.find_by!("1 = 0")
end
end
test "loaded relations cannot be mutated by multi value methods" do
relation = Post.all
relation.to_a
assert_raises(ActiveRecord::ImmutableRelation) do
relation.where! 'foo'
end
end
test "loaded relations cannot be mutated by single value methods" do
relation = Post.all
relation.to_a
assert_raises(ActiveRecord::ImmutableRelation) do
relation.limit! 5
end
end
test "loaded relations cannot be mutated by merge!" do
relation = Post.all
relation.to_a
assert_raises(ActiveRecord::ImmutableRelation) do
relation.merge! where: 'foo'
end
end
test "loaded relations cannot be mutated by extending!" do
relation = Post.all
relation.to_a
assert_raises(ActiveRecord::ImmutableRelation) do
relation.extending! Module.new
end
end
test "relations show the records in #inspect" do
relation = Post.limit(2)
assert_equal "#<ActiveRecord::Relation [#{Post.limit(2).map(&:inspect).join(', ')}]>", relation.inspect
end
test "relations limit the records in #inspect at 10" do
relation = Post.limit(11)
assert_equal "#<ActiveRecord::Relation [#{Post.limit(10).map(&:inspect).join(', ')}, ...]>", relation.inspect
end
test "already-loaded relations don't perform a new query in #inspect" do
relation = Post.limit(2)
relation.to_a
expected = "#<ActiveRecord::Relation [#{Post.limit(2).map(&:inspect).join(', ')}]>"
assert_no_queries do
assert_equal expected, relation.inspect
end
end
test 'using a custom table affects the wheres' do
table_alias = Post.arel_table.alias('omg_posts')
relation = ActiveRecord::Relation.new Post, table_alias
relation.where!(:foo => "bar")
node = relation.arel.constraints.first.grep(Arel::Attributes::Attribute).first
assert_equal table_alias, node.relation
end
test '#load' do
relation = Post.all
assert_queries(1) do
assert_equal relation, relation.load
end
assert_no_queries { relation.to_a }
end
test 'group with select and includes' do
authors_count = Post.select('author_id, COUNT(author_id) AS num_posts').
group('author_id').order('author_id').includes(:author).to_a
assert_no_queries do
result = authors_count.map do |post|
[post.num_posts, post.author.try(:name)]
end
expected = [[1, nil], [5, "David"], [3, "Mary"], [2, "Bob"]]
assert_equal expected, result
end
end
end
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