class EachTest

Public Instance Methods

setup() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 11
def setup
  @posts = Post.order("id asc")
  @total = Post.count
  Post.count("id") # preheat arel's table cache
end
test_each_enumerator_should_execute_one_query_per_batch() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 47
def test_each_enumerator_should_execute_one_query_per_batch
  assert_queries(@total + 1) do
    Post.find_each(batch_size: 1).with_index do |post, index|
      assert_kind_of Post, post
      assert_kind_of Integer, index
    end
  end
end
test_each_should_execute_if_id_is_in_select() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 64
def test_each_should_execute_if_id_is_in_select
  assert_queries(6) do
    Post.select("id, title, type").find_each(batch_size: 2) do |post|
      assert_kind_of Post, post
    end
  end
end
test_each_should_execute_one_query_per_batch() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 17
def test_each_should_execute_one_query_per_batch
  assert_queries(@total + 1) do
    Post.find_each(batch_size: 1) do |post|
      assert_kind_of Post, post
    end
  end
end
test_each_should_not_return_query_chain_and_execute_only_one_query() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 25
def test_each_should_not_return_query_chain_and_execute_only_one_query
  assert_queries(1) do
    result = Post.find_each(batch_size: 100000) {}
    assert_nil result
  end
end
test_each_should_raise_if_select_is_set_without_id() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 56
def test_each_should_raise_if_select_is_set_without_id
  assert_raise(ArgumentError) do
    Post.select(:title).find_each(batch_size: 1) { |post|
      flunk "should not call this block"
    }
  end
end
test_each_should_return_a_sized_enumerator() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 41
def test_each_should_return_a_sized_enumerator
  assert_equal 11, Post.find_each(batch_size: 1).size
  assert_equal 5, Post.find_each(batch_size:  2, start: 7).size
  assert_equal 11, Post.find_each(batch_size: 10_000).size
end
test_each_should_return_an_enumerator_if_no_block_is_present() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 32
def test_each_should_return_an_enumerator_if_no_block_is_present
  assert_queries(1) do
    Post.find_each(batch_size: 100000).with_index do |post, index|
      assert_kind_of Post, post
      assert_kind_of Integer, index
    end
  end
end
test_find_in_batches_should_end_at_the_finish_option() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 128
def test_find_in_batches_should_end_at_the_finish_option
  assert_queries(6) do
    Post.find_in_batches(batch_size: 1, finish: 5) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Post, batch.first
    end
  end
end
test_find_in_batches_should_error_on_config_specified_to_error() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 202
def test_find_in_batches_should_error_on_config_specified_to_error
  # Set the config option
  prev = ActiveRecord::Base.error_on_ignored_order
  ActiveRecord::Base.error_on_ignored_order = true
  assert_raise(ArgumentError) do
    PostWithDefaultScope.find_in_batches() {}
  end
ensure
  # Set back to default
  ActiveRecord::Base.error_on_ignored_order = prev
end
test_find_in_batches_should_error_on_ignore_the_order() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 184
def test_find_in_batches_should_error_on_ignore_the_order
  assert_raise(ArgumentError) do
    PostWithDefaultScope.find_in_batches(error_on_ignore: true) {}
  end
end
test_find_in_batches_should_ignore_the_order_default_scope() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 172
def test_find_in_batches_should_ignore_the_order_default_scope
  # First post is with title scope
  first_post = PostWithDefaultScope.first
  posts = []
  PostWithDefaultScope.find_in_batches  do |batch|
    posts.concat(batch)
  end
  # posts.first will be ordered using id only. Title order scope should not apply here
  assert_not_equal first_post, posts.first
  assert_equal posts(:welcome).id, posts.first.id
end
test_find_in_batches_should_not_error_by_default() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 214
def test_find_in_batches_should_not_error_by_default
  assert_nothing_raised do
    PostWithDefaultScope.find_in_batches() {}
  end
end
test_find_in_batches_should_not_error_if_config_overridden() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 190
def test_find_in_batches_should_not_error_if_config_overridden
  # Set the config option which will be overridden
  prev = ActiveRecord::Base.error_on_ignored_order
  ActiveRecord::Base.error_on_ignored_order = true
  assert_nothing_raised do
    PostWithDefaultScope.find_in_batches(error_on_ignore: false) {}
  end
ensure
  # Set back to default
  ActiveRecord::Base.error_on_ignored_order = prev
end
test_find_in_batches_should_not_ignore_the_default_scope_if_it_is_other_then_order() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 220
def test_find_in_batches_should_not_ignore_the_default_scope_if_it_is_other_then_order
  special_posts_ids = SpecialPostWithDefaultScope.all.map(&:id).sort
  posts = []
  SpecialPostWithDefaultScope.find_in_batches do |batch|
    posts.concat(batch)
  end
  assert_equal special_posts_ids, posts.map(&:id)
end
test_find_in_batches_should_not_modify_passed_options() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 229
def test_find_in_batches_should_not_modify_passed_options
  assert_nothing_raised do
    Post.find_in_batches({ batch_size: 42, start: 1 }.freeze) {}
  end
end
test_find_in_batches_should_not_use_records_after_yielding_them_in_case_original_array_is_modified() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 157
def test_find_in_batches_should_not_use_records_after_yielding_them_in_case_original_array_is_modified
  not_a_post = "not a post".dup
  def not_a_post.id; end
  not_a_post.stub(:id, -> { raise StandardError.new("not_a_post had #id called on it") }) do
    assert_nothing_raised do
      Post.find_in_batches(batch_size: 1) do |batch|
        assert_kind_of Array, batch
        assert_kind_of Post, batch.first

        batch.map! { not_a_post }
      end
    end
  end
end
test_find_in_batches_should_quote_batch_order() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 147
def test_find_in_batches_should_quote_batch_order
  c = Post.connection
  assert_sql(/ORDER BY #{c.quote_table_name('posts')}\.#{c.quote_column_name('id')}/) do
    Post.find_in_batches(batch_size: 1) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Post, batch.first
    end
  end
end
test_find_in_batches_should_return_a_sized_enumerator() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 519
def test_find_in_batches_should_return_a_sized_enumerator
  assert_equal 11, Post.find_in_batches(batch_size: 1).size
  assert_equal 6, Post.find_in_batches(batch_size: 2).size
  assert_equal 4, Post.find_in_batches(batch_size: 2, start: 4).size
  assert_equal 4, Post.find_in_batches(batch_size: 3).size
  assert_equal 1, Post.find_in_batches(batch_size: 10_000).size
end
test_find_in_batches_should_return_an_enumerator() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 256
def test_find_in_batches_should_return_an_enumerator
  enum = nil
  assert_no_queries do
    enum = Post.find_in_batches(batch_size: 1)
  end
  assert_queries(4) do
    enum.first(4) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Post, batch.first
    end
  end
end
test_find_in_batches_should_return_batches() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 110
def test_find_in_batches_should_return_batches
  assert_queries(@total + 1) do
    Post.find_in_batches(batch_size: 1) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Post, batch.first
    end
  end
end
test_find_in_batches_should_start_from_the_start_option() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 119
def test_find_in_batches_should_start_from_the_start_option
  assert_queries(@total) do
    Post.find_in_batches(batch_size: 1, start: 2) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Post, batch.first
    end
  end
end
test_find_in_batches_should_use_any_column_as_primary_key() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 235
def test_find_in_batches_should_use_any_column_as_primary_key
  nick_order_subscribers = Subscriber.order("nick asc")
  start_nick = nick_order_subscribers.second.nick

  subscribers = []
  Subscriber.find_in_batches(batch_size: 1, start: start_nick) do |batch|
    subscribers.concat(batch)
  end

  assert_equal nick_order_subscribers[1..-1].map(&:id), subscribers.map(&:id)
end
test_find_in_batches_should_use_any_column_as_primary_key_when_start_is_not_specified() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 247
def test_find_in_batches_should_use_any_column_as_primary_key_when_start_is_not_specified
  assert_queries(Subscriber.count + 1) do
    Subscriber.find_in_batches(batch_size: 1) do |batch|
      assert_kind_of Array, batch
      assert_kind_of Subscriber, batch.first
    end
  end
end
test_find_in_batches_shouldnt_execute_query_unless_needed() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 137
def test_find_in_batches_shouldnt_execute_query_unless_needed
  assert_queries(2) do
    Post.find_in_batches(batch_size: @total) { |batch| assert_kind_of Array, batch }
  end

  assert_queries(1) do
    Post.find_in_batches(batch_size: @total + 1) { |batch| assert_kind_of Array, batch }
  end
end
test_in_batches_delete_all_should_not_delete_records_in_other_batches() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 347
def test_in_batches_delete_all_should_not_delete_records_in_other_batches
  not_deleted_count = Post.where("id <= 2").count
  Post.where("id > 2").in_batches(of: 2).delete_all
  assert_equal 0, Post.where("id > 2").count
  assert_equal not_deleted_count, Post.count
end
test_in_batches_each_record_should_be_ordered_by_id() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 331
def test_in_batches_each_record_should_be_ordered_by_id
  ids = Post.order("id ASC").pluck(:id)
  assert_queries(6) do
    Post.in_batches(of: 2).each_record.with_index do |post, i|
      assert_equal ids[i], post.id
    end
  end
end
test_in_batches_each_record_should_return_enumerator_if_no_block_given() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 322
def test_in_batches_each_record_should_return_enumerator_if_no_block_given
  assert_queries(6) do
    Post.in_batches(of: 2).each_record.with_index do |post, i|
      assert post.title.present?
      assert_kind_of Post, post
    end
  end
end
test_in_batches_each_record_should_yield_record_if_block_is_given() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 313
def test_in_batches_each_record_should_yield_record_if_block_is_given
  assert_queries(6) do
    Post.in_batches(of: 2).each_record do |post|
      assert post.title.present?
      assert_kind_of Post, post
    end
  end
end
test_in_batches_if_not_loaded_executes_more_queries() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 370
def test_in_batches_if_not_loaded_executes_more_queries
  assert_queries(@total + 1) do
    Post.in_batches(of: 1, load: false) do |relation|
      assert_not relation.loaded?
    end
  end
end
test_in_batches_relations_should_not_overlap_with_each_other() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 487
def test_in_batches_relations_should_not_overlap_with_each_other
  seen_posts = []
  Post.in_batches(of: 2, load: true) do |relation|
    relation.to_a.each do |post|
      assert_not seen_posts.include?(post)
      seen_posts << post
    end
  end
end
test_in_batches_relations_update_all_should_not_affect_matching_records_in_other_batches() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 508
def test_in_batches_relations_update_all_should_not_affect_matching_records_in_other_batches
  Post.update_all(author_id: 0)
  person = Post.last
  person.update_attributes(author_id: 1)

  Post.in_batches(of: 2) do |batch|
    batch.where("author_id >= 1").update_all("author_id = author_id + 1")
  end
  assert_equal 2, person.reload.author_id # incremented only once
end
test_in_batches_relations_with_condition_should_not_overlap_with_each_other() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 497
def test_in_batches_relations_with_condition_should_not_overlap_with_each_other
  seen_posts = []
  author_id = Post.first.author_id
  posts_by_author = Post.where(author_id: author_id)
  Post.in_batches(of: 2) do |batch|
    seen_posts += batch.where(author_id: author_id)
  end

  assert_equal posts_by_author.pluck(:id).sort, seen_posts.map(&:id).sort
end
test_in_batches_should_be_enumerable_if_no_block_given() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 305
def test_in_batches_should_be_enumerable_if_no_block_given
  assert_queries(6) do
    Post.in_batches(of: 2).each do |relation|
      assert_kind_of ActiveRecord::Relation, relation
    end
  end
end
test_in_batches_should_be_loaded() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 364
def test_in_batches_should_be_loaded
  Post.in_batches(of: 1, load: true) do |relation|
    assert relation.loaded?
  end
end
test_in_batches_should_end_at_the_finish_option() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 394
def test_in_batches_should_end_at_the_finish_option
  post = Post.order("id DESC").where("id <= ?", 5).first
  assert_queries(7) do
    relation = Post.in_batches(of: 1, finish: 5, load: true).reverse_each.first
    assert_equal post, relation.last
  end
end
test_in_batches_should_not_be_loaded() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 354
def test_in_batches_should_not_be_loaded
  Post.in_batches(of: 1) do |relation|
    assert_not relation.loaded?
  end

  Post.in_batches(of: 1, load: false) do |relation|
    assert_not relation.loaded?
  end
end
test_in_batches_should_not_execute_any_query() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 291
def test_in_batches_should_not_execute_any_query
  assert_no_queries do
    assert_kind_of ActiveRecord::Batches::BatchEnumerator, Post.in_batches(of: 2)
  end
end
test_in_batches_should_not_ignore_default_scope_without_order_statements() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 438
def test_in_batches_should_not_ignore_default_scope_without_order_statements
  special_posts_ids = SpecialPostWithDefaultScope.all.map(&:id).sort
  posts = []
  SpecialPostWithDefaultScope.in_batches do |relation|
    posts.concat(relation)
  end
  assert_equal special_posts_ids, posts.map(&:id)
end
test_in_batches_should_not_modify_passed_options() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 447
def test_in_batches_should_not_modify_passed_options
  assert_nothing_raised do
    Post.in_batches({ of: 42, start: 1 }.freeze) {}
  end
end
test_in_batches_should_not_use_records_after_yielding_them_in_case_original_array_is_modified() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 422
def test_in_batches_should_not_use_records_after_yielding_them_in_case_original_array_is_modified
  not_a_post = "not a post".dup
  def not_a_post.id
    raise StandardError.new("not_a_post had #id called on it")
  end

  assert_nothing_raised do
    Post.in_batches(of: 1) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
      assert_kind_of Post, relation.first

      relation = [not_a_post] * relation.count
    end
  end
end
test_in_batches_should_quote_batch_order() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 412
def test_in_batches_should_quote_batch_order
  c = Post.connection
  assert_sql(/ORDER BY #{c.quote_table_name('posts')}\.#{c.quote_column_name('id')}/) do
    Post.in_batches(of: 1) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
      assert_kind_of Post, relation.first
    end
  end
end
test_in_batches_should_return_an_enumerator() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 474
def test_in_batches_should_return_an_enumerator
  enum = nil
  assert_no_queries do
    enum = Post.in_batches(of: 1)
  end
  assert_queries(4) do
    enum.first(4) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
      assert_kind_of Post, relation.first
    end
  end
end
test_in_batches_should_return_relations() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 378
def test_in_batches_should_return_relations
  assert_queries(@total + 1) do
    Post.in_batches(of: 1) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
    end
  end
end
test_in_batches_should_start_from_the_start_option() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 386
def test_in_batches_should_start_from_the_start_option
  post = Post.order("id ASC").where("id >= ?", 2).first
  assert_queries(2) do
    relation = Post.in_batches(of: 1, start: 2).first
    assert_equal post, relation.first
  end
end
test_in_batches_should_use_any_column_as_primary_key() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 453
def test_in_batches_should_use_any_column_as_primary_key
  nick_order_subscribers = Subscriber.order("nick asc")
  start_nick = nick_order_subscribers.second.nick

  subscribers = []
  Subscriber.in_batches(of: 1, start: start_nick) do |relation|
    subscribers.concat(relation)
  end

  assert_equal nick_order_subscribers[1..-1].map(&:id), subscribers.map(&:id)
end
test_in_batches_should_use_any_column_as_primary_key_when_start_is_not_specified() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 465
def test_in_batches_should_use_any_column_as_primary_key_when_start_is_not_specified
  assert_queries(Subscriber.count + 1) do
    Subscriber.in_batches(of: 1, load: true) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
      assert_kind_of Subscriber, relation.first
    end
  end
end
test_in_batches_should_yield_relation_if_block_given() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 297
def test_in_batches_should_yield_relation_if_block_given
  assert_queries(6) do
    Post.in_batches(of: 2) do |relation|
      assert_kind_of ActiveRecord::Relation, relation
    end
  end
end
test_in_batches_shouldnt_execute_query_unless_needed() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 402
def test_in_batches_shouldnt_execute_query_unless_needed
  assert_queries(2) do
    Post.in_batches(of: @total) { |relation| assert_kind_of ActiveRecord::Relation, relation }
  end

  assert_queries(1) do
    Post.in_batches(of: @total + 1) { |relation| assert_kind_of ActiveRecord::Relation, relation }
  end
end
test_in_batches_update_all_affect_all_records() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 340
def test_in_batches_update_all_affect_all_records
  assert_queries(6 + 6) do # 6 selects, 6 updates
    Post.in_batches(of: 2).update_all(title: "updated-title")
  end
  assert_equal Post.all.pluck(:title), ["updated-title"] * Post.count
end
test_logger_not_required() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 100
def test_logger_not_required
  previous_logger = ActiveRecord::Base.logger
  ActiveRecord::Base.logger = nil
  assert_nothing_raised do
    Post.order("comments_count DESC").find_each { |post| post }
  end
ensure
  ActiveRecord::Base.logger = previous_logger
end
test_warn_if_order_scope_is_set() click to toggle source
# File activerecord/test/cases/batches_test.rb, line 94
def test_warn_if_order_scope_is_set
  assert_called(ActiveRecord::Base.logger, :warn) do
    Post.order("title").find_each { |post| post }
  end
end