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127 lines
3.6 KiB
Ruby
127 lines
3.6 KiB
Ruby
require 'cases/helper'
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require 'models/post'
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class EachTest < ActiveRecord::TestCase
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fixtures :posts
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def setup
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@posts = Post.order("id asc")
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@total = Post.count
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Post.count('id') # preheat arel's table cache
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end
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def test_each_should_excecute_one_query_per_batch
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assert_queries(Post.count + 1) do
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Post.find_each(:batch_size => 1) do |post|
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assert_kind_of Post, post
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end
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end
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end
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def test_each_should_not_return_query_chain_and_execcute_only_one_query
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assert_queries(1) do
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result = Post.find_each(:batch_size => 100000){ }
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assert_nil result
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end
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end
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def test_each_should_raise_if_select_is_set_without_id
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assert_raise(RuntimeError) do
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Post.select(:title).find_each(:batch_size => 1) { |post| post }
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end
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end
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def test_each_should_execute_if_id_is_in_select
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assert_queries(6) do
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Post.select("id, title, type").find_each(:batch_size => 2) do |post|
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assert_kind_of Post, post
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end
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end
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end
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def test_warn_if_limit_scope_is_set
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ActiveRecord::Base.logger.expects(:warn)
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Post.limit(1).find_each { |post| post }
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end
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def test_warn_if_order_scope_is_set
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ActiveRecord::Base.logger.expects(:warn)
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Post.order("title").find_each { |post| post }
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end
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def test_find_in_batches_should_return_batches
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assert_queries(Post.count + 1) do
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Post.find_in_batches(:batch_size => 1) do |batch|
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assert_kind_of Array, batch
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assert_kind_of Post, batch.first
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end
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end
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end
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def test_find_in_batches_should_start_from_the_start_option
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assert_queries(Post.count) do
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Post.find_in_batches(:batch_size => 1, :start => 2) do |batch|
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assert_kind_of Array, batch
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assert_kind_of Post, batch.first
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end
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end
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end
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def test_find_in_batches_shouldnt_excute_query_unless_needed
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post_count = Post.count
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assert_queries(2) do
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Post.find_in_batches(:batch_size => post_count) {|batch| assert_kind_of Array, batch }
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end
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assert_queries(1) do
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Post.find_in_batches(:batch_size => post_count + 1) {|batch| assert_kind_of Array, batch }
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end
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end
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def test_find_in_batches_should_quote_batch_order
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c = Post.connection
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assert_sql(/ORDER BY #{c.quote_table_name('posts')}.#{c.quote_column_name('id')}/) do
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Post.find_in_batches(:batch_size => 1) do |batch|
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assert_kind_of Array, batch
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assert_kind_of Post, batch.first
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end
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end
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end
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def test_find_in_batches_should_not_use_records_after_yielding_them_in_case_original_array_is_modified
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not_a_post = "not a post"
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not_a_post.stubs(:id).raises(StandardError, "not_a_post had #id called on it")
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assert_nothing_raised do
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Post.find_in_batches(:batch_size => 1) do |batch|
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assert_kind_of Array, batch
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assert_kind_of Post, batch.first
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batch.map! { not_a_post }
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end
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end
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end
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def test_find_in_batches_should_ignore_the_order_default_scope
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# First post is with title scope
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first_post = PostWithDefaultScope.first
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posts = []
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PostWithDefaultScope.find_in_batches do |batch|
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posts.concat(batch)
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end
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# posts.first will be ordered using id only. Title order scope should not apply here
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assert_not_equal first_post, posts.first
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assert_equal posts(:welcome), posts.first
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end
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def test_find_in_batches_should_not_ignore_the_default_scope_if_it_is_other_then_order
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special_posts_ids = SpecialPostWithDefaultScope.all.map(&:id).sort
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posts = []
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SpecialPostWithDefaultScope.find_in_batches do |batch|
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posts.concat(batch)
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end
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assert_equal special_posts_ids, posts.map(&:id)
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end
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end
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