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require 'abstract_unit'
require 'fixtures/post'
require 'fixtures/comment'
require 'fixtures/author'
require 'fixtures/category'
require 'fixtures/categorization'
class InnerJoinAssociationTest < Test::Unit::TestCase
fixtures :authors, :posts, :comments, :categories, :categories_posts, :categorizations
def test_construct_finder_sql_creates_inner_joins
sql = Author.send(:construct_finder_sql, :joins => :posts)
assert_match /INNER JOIN `?posts`? ON `?posts`?.author_id = authors.id/, sql
end
def test_construct_finder_sql_cascades_inner_joins
sql = Author.send(:construct_finder_sql, :joins => {:posts => :comments})
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.send(:construct_finder_sql, :joins => :categorized_posts)
assert_match /INNER JOIN `?categorizations`?.*INNER JOIN `?posts`?/, sql
end
def test_construct_finder_sql_applies_association_conditions
sql = Author.send(:construct_finder_sql, :joins => :categories_like_general, :conditions => "TERMINATING_MARKER")
assert_match /INNER JOIN `?categories`? ON.*AND.*`?General`?.*TERMINATING_MARKER/, sql
end
def test_construct_finder_sql_unpacks_nested_joins
sql = Author.send(:construct_finder_sql, :joins => {:posts => [[:comments]]})
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.send(:construct_finder_sql, :joins => {})
assert_no_match /JOIN/i, sql
end
def test_construct_finder_sql_ignores_empty_joins_array
sql = Author.send(:construct_finder_sql, :joins => [])
assert_no_match /JOIN/i, sql
end
def test_find_with_implicit_inner_joins_honors_readonly_without_select
authors = Author.find(:all, :joins => :posts)
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.find(:all, :select => 'authors.*', :joins => :posts)
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.find(:all, :joins => :posts, :readonly => false)
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.find(:all, :select => 'authors.*', :joins => :posts)
assert !authors.empty?, "expected authors to be non-empty"
assert authors.all? {|a| !a.send(:instance_variables).include?("@posts")}, "expected no authors to have the @posts association loaded"
end
def test_count_honors_implicit_inner_joins
real_count = Author.find(:all).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.find(:all).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.find(:all).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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