JezK
Edit File: test_mysql.rb
require 'helper' module Arel module Visitors describe 'the mysql visitor' do before do @visitor = MySQL.new Table.engine.connection end it 'squashes parenthesis on multiple unions' do subnode = Nodes::Union.new 'left', 'right' node = Nodes::Union.new subnode, 'topright' assert_equal 1, @visitor.accept(node).scan('(').length subnode = Nodes::Union.new 'left', 'right' node = Nodes::Union.new 'topleft', subnode assert_equal 1, @visitor.accept(node).scan('(').length end ### # :'( # http://dev.mysql.com/doc/refman/5.0/en/select.html#id3482214 it 'defaults limit to 18446744073709551615' do stmt = Nodes::SelectStatement.new stmt.offset = Nodes::Offset.new(1) sql = @visitor.accept(stmt) sql.must_be_like "SELECT FROM DUAL LIMIT 18446744073709551615 OFFSET 1" end it "should escape LIMIT" do sc = Arel::Nodes::UpdateStatement.new sc.limit = Nodes::Limit.new("omg") assert_equal("UPDATE NULL LIMIT 'omg'", @visitor.accept(sc)) end it 'uses DUAL for empty from' do stmt = Nodes::SelectStatement.new sql = @visitor.accept(stmt) sql.must_be_like "SELECT FROM DUAL" end describe 'locking' do it 'defaults to FOR UPDATE when locking' do node = Nodes::Lock.new(Arel.sql('FOR UPDATE')) @visitor.accept(node).must_be_like "FOR UPDATE" end it 'allows a custom string to be used as a lock' do node = Nodes::Lock.new(Arel.sql('LOCK IN SHARE MODE')) @visitor.accept(node).must_be_like "LOCK IN SHARE MODE" end end end end end