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require "cases/helper"
require 'models/post'
require 'models/comment'
require 'models/author'
require 'models/category'
require 'models/categorization'
class InnerJoinAssociationTest < ActiveRecord::TestCase
fixtures :authors, :posts, :comments, :categories, :categories_posts, :categorizations
def test_construct_finder_sql_creates_inner_joins
sql = Author.joins(:posts).to_sql
assert_match /INNER JOIN .?posts.? ON .?posts.?.author_id = authors.id/, sql
end
def test_construct_finder_sql_cascades_inner_joins
sql = Author.joins(:posts => :comments).to_sql
assert_match /INNER JOIN .?posts.? ON .?posts.?.author_id = authors.id/, sql
assert_match /INNER JOIN .?comments.? ON .?comments.?.post_id = posts.id/, sql
end
def test_construct_finder_sql_inner_joins_through_associations
sql = Author.joins(:categorized_posts).to_sql
assert_match /INNER JOIN .?categorizations.?.*INNER JOIN .?posts.?/, sql
end
def test_construct_finder_sql_applies_association_conditions
sql = Author.joins(:categories_like_general).where("TERMINATING_MARKER").to_sql
assert_match /INNER JOIN .?categories.? ON.*AND.*.?General.?(.|\n)*TERMINATING_MARKER/, sql
end
def test_construct_finder_sql_applies_aliases_tables_on_association_conditions
result = Author.joins(:thinking_posts, :welcome_posts).to_a
assert_equal authors(:david), result.first
end
def test_construct_finder_sql_unpacks_nested_joins
sql = Author.joins(:posts => [[:comments]]).to_sql
assert_no_match /inner join.*inner join.*inner join/i, sql, "only two join clauses should be present"
assert_match /INNER JOIN .?posts.? ON .?posts.?.author_id = authors.id/, sql
assert_match /INNER JOIN .?comments.? ON .?comments.?.post_id = .?posts.?.id/, sql
end
def test_construct_finder_sql_ignores_empty_joins_hash
sql = Author.joins({}).to_sql
assert_no_match /JOIN/i, sql
end
def test_construct_finder_sql_ignores_empty_joins_array
sql = Author.joins([]).to_sql
assert_no_match /JOIN/i, sql
end
def test_find_with_implicit_inner_joins_honors_readonly_without_select
authors = Author.joins(:posts).to_a
assert !authors.empty?, "expected authors to be non-empty"
assert authors.all? {|a| a.readonly? }, "expected all authors to be readonly"
end
def test_find_with_implicit_inner_joins_honors_readonly_with_select
authors = Author.joins(:posts).select('authors.*').to_a
assert !authors.empty?, "expected authors to be non-empty"
assert authors.all? {|a| !a.readonly? }, "expected no authors to be readonly"
end
def test_find_with_implicit_inner_joins_honors_readonly_false
authors = Author.joins(:posts).readonly(false).to_a
assert !authors.empty?, "expected authors to be non-empty"
assert authors.all? {|a| !a.readonly? }, "expected no authors to be readonly"
end
def test_find_with_implicit_inner_joins_does_not_set_associations
authors = Author.joins(:posts).select('authors.*')
assert !authors.empty?, "expected authors to be non-empty"
assert authors.all? {|a| !a.send(:instance_variable_names).include?("@posts")}, "expected no authors to have the @posts association loaded"
end
def test_count_honors_implicit_inner_joins
real_count = Author.scoped.to_a.sum{|a| a.posts.count }
assert_equal real_count, Author.count(:joins => :posts), "plain inner join count should match the number of referenced posts records"
end
def test_calculate_honors_implicit_inner_joins
real_count = Author.scoped.to_a.sum{|a| a.posts.count }
assert_equal real_count, Author.calculate(:count, 'authors.id', :joins => :posts), "plain inner join count should match the number of referenced posts records"
end
def test_calculate_honors_implicit_inner_joins_and_distinct_and_conditions
real_count = Author.scoped.to_a.select {|a| a.posts.any? {|p| p.title =~ /^Welcome/} }.length
authors_with_welcoming_post_titles = Author.calculate(:count, 'authors.id', :joins => :posts, :distinct => true, :conditions => "posts.title like 'Welcome%'")
assert_equal real_count, authors_with_welcoming_post_titles, "inner join and conditions should have only returned authors posting titles starting with 'Welcome'"
end
end
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