2010-08-12 19:19:54 -04:00
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require 'spec_helper'
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module Arel
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2010-08-14 22:48:33 -04:00
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class EngineProxy
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attr_reader :executed
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2010-09-21 12:20:14 -04:00
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attr_reader :connection_pool
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attr_reader :spec
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attr_reader :config
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2010-08-14 22:48:33 -04:00
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def initialize engine
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@engine = engine
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@executed = []
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2010-09-21 12:20:14 -04:00
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@connection_pool = self
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@spec = self
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@config = { :adapter => 'sqlite3' }
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2010-08-14 22:48:33 -04:00
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end
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2010-09-24 12:41:48 -04:00
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def with_connection
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yield self
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end
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2010-08-14 22:48:33 -04:00
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def connection
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self
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end
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def quote_table_name thing; @engine.connection.quote_table_name thing end
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def quote_column_name thing; @engine.connection.quote_column_name thing end
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def quote thing, column; @engine.connection.quote thing, column end
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2010-09-28 19:46:06 -04:00
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def execute sql, name = nil, *args
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2010-08-14 22:48:33 -04:00
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@executed << sql
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end
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2010-08-23 16:28:08 -04:00
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alias :update :execute
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alias :delete :execute
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2010-09-09 18:20:25 -04:00
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alias :insert :execute
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2010-08-14 22:48:33 -04:00
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end
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2010-08-13 18:30:22 -04:00
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describe 'select manager' do
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2010-09-10 20:05:10 -04:00
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describe 'backwards compatibility' do
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describe 'project' do
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it 'accepts symbols as sql literals' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.project :id
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manager.from table
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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SELECT id FROM "users"
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}
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end
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end
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2010-09-12 22:27:54 -04:00
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describe 'order' do
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it 'accepts symbols' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.project SqlLiteral.new '*'
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manager.from table
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manager.order :foo
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-12 22:27:54 -04:00
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SELECT * FROM "users" ORDER BY foo
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}
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end
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end
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2010-09-12 21:23:28 -04:00
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describe 'group' do
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it 'takes a symbol' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.from table
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manager.group :foo
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-12 21:23:28 -04:00
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SELECT FROM "users" GROUP BY foo
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}
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end
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end
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2010-09-12 19:53:12 -04:00
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describe 'from' do
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it 'ignores strings when table of same name exists' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.from table
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manager.from 'users'
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manager.project table['id']
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manager.to_sql.must_be_like 'SELECT "users"."id" FROM users'
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2010-09-12 19:53:12 -04:00
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end
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end
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2010-09-10 20:05:10 -04:00
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describe '#having' do
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it 'converts strings to SQLLiterals' do
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table = Table.new :users
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mgr = table.from table
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mgr.having 'foo'
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mgr.to_sql.must_be_like %{ SELECT FROM "users" HAVING foo }
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end
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end
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end
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2010-09-14 16:39:33 -04:00
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describe 'clone' do
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it 'creates new cores' do
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table = Table.new :users, :engine => Table.engine, :as => 'foo'
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mgr = table.from table
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m2 = mgr.clone
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m2.project "foo"
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2010-10-18 18:41:21 -04:00
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mgr.to_sql.wont_equal m2.to_sql
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2010-09-14 16:39:33 -04:00
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end
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end
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2010-09-12 21:15:21 -04:00
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describe 'initialize' do
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it 'uses alias in sql' do
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table = Table.new :users, :engine => Table.engine, :as => 'foo'
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mgr = table.from table
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mgr.skip 10
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2010-10-18 18:41:21 -04:00
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mgr.to_sql.must_be_like %{ SELECT FROM "users" "foo" OFFSET 10 }
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2010-09-12 21:15:21 -04:00
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end
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end
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2010-09-10 12:47:50 -04:00
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describe 'skip' do
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it 'should add an offset' do
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table = Table.new :users
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mgr = table.from table
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mgr.skip 10
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2010-10-18 18:41:21 -04:00
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mgr.to_sql.must_be_like %{ SELECT FROM "users" OFFSET 10 }
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2010-09-10 12:47:50 -04:00
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end
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it 'should chain' do
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table = Table.new :users
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mgr = table.from table
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mgr.skip(10).to_sql.must_be_like %{ SELECT FROM "users" OFFSET 10 }
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2010-09-10 12:47:50 -04:00
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end
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end
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2010-09-09 18:58:06 -04:00
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describe 'taken' do
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it 'should return limit' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.take 10
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check manager.taken.must_equal 10
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2010-09-09 18:58:06 -04:00
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end
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end
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2010-09-09 18:20:25 -04:00
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describe 'insert' do
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it 'uses the select FROM' do
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engine = EngineProxy.new Table.engine
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table = Table.new :users
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manager = Arel::SelectManager.new engine
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manager.from table
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manager.insert 'VALUES(NULL)'
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2010-10-18 18:41:21 -04:00
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engine.executed.last.must_be_like %{
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2010-09-09 18:20:25 -04:00
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INSERT INTO "users" VALUES(NULL)
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}
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end
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end
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2010-09-08 20:32:44 -04:00
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describe 'lock' do
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# This should fail on other databases
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it 'adds a lock node' do
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table = Table.new :users
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mgr = table.from table
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mgr.lock.to_sql.must_be_like %{ SELECT FROM "users" }
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2010-09-08 20:32:44 -04:00
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end
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end
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2010-09-10 13:45:05 -04:00
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describe 'orders' do
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it 'returns order clauses' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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order = table[:id]
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manager.order table[:id]
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2010-10-18 18:41:21 -04:00
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check manager.orders.must_equal [order]
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2010-09-10 13:45:05 -04:00
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end
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end
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2010-08-22 21:13:39 -04:00
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describe 'order' do
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it 'generates order clauses' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.project SqlLiteral.new '*'
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manager.from table
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manager.order table[:id]
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-08-22 21:13:39 -04:00
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SELECT * FROM "users" ORDER BY "users"."id"
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}
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end
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# FIXME: I would like to deprecate this
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it 'takes *args' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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manager.project SqlLiteral.new '*'
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manager.from table
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manager.order table[:id], table[:name]
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-08-22 21:13:39 -04:00
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SELECT * FROM "users" ORDER BY "users"."id", "users"."name"
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}
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end
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it 'chains' do
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table = Table.new :users
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manager = Arel::SelectManager.new Table.engine
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2010-10-18 18:41:21 -04:00
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check manager.order(table[:id]).must_equal manager
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2010-08-22 21:13:39 -04:00
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end
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end
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2010-09-07 20:42:40 -04:00
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describe 'on' do
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it 'takes two params' do
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left = Table.new :users
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right = left.alias
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predicate = left[:id].eq(right[:id])
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manager = Arel::SelectManager.new Table.engine
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manager.from left
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manager.join(right).on(predicate, predicate)
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-07 20:42:40 -04:00
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SELECT FROM "users"
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INNER JOIN "users" "users_2"
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ON "users"."id" = "users_2"."id" AND
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"users"."id" = "users_2"."id"
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}
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end
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it 'takes three params' do
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left = Table.new :users
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right = left.alias
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predicate = left[:id].eq(right[:id])
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manager = Arel::SelectManager.new Table.engine
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manager.from left
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manager.join(right).on(
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predicate,
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predicate,
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left[:name].eq(right[:name])
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)
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-07 20:42:40 -04:00
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SELECT FROM "users"
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INNER JOIN "users" "users_2"
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ON "users"."id" = "users_2"."id" AND
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"users"."id" = "users_2"."id" AND
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"users"."name" = "users_2"."name"
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}
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end
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end
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2010-09-07 17:49:37 -04:00
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describe 'join' do
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it 'responds to join' do
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left = Table.new :users
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right = left.alias
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predicate = left[:id].eq(right[:id])
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manager = Arel::SelectManager.new Table.engine
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2010-09-07 18:10:27 -04:00
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manager.from left
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2010-09-07 17:49:37 -04:00
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manager.join(right).on(predicate)
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-07 18:10:27 -04:00
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SELECT FROM "users"
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INNER JOIN "users" "users_2"
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ON "users"."id" = "users_2"."id"
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}
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end
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it 'takes a class' do
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left = Table.new :users
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right = left.alias
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predicate = left[:id].eq(right[:id])
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manager = Arel::SelectManager.new Table.engine
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manager.from left
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manager.join(right, Nodes::OuterJoin).on(predicate)
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2010-10-18 18:41:21 -04:00
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manager.to_sql.must_be_like %{
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2010-09-07 17:49:37 -04:00
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SELECT FROM "users"
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2010-09-07 18:26:21 -04:00
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LEFT OUTER JOIN "users" "users_2"
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2010-09-07 17:49:37 -04:00
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ON "users"."id" = "users_2"."id"
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}
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end
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2010-09-07 18:27:08 -04:00
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it 'noops on nil' do
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manager = Arel::SelectManager.new Table.engine
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2010-10-18 18:41:21 -04:00
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check manager.join(nil).must_equal manager
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2010-09-07 18:27:08 -04:00
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end
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2010-09-07 17:49:37 -04:00
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end
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2010-08-19 13:37:50 -04:00
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describe 'joins' do
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it 'returns join sql' do
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table = Table.new :users
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aliaz = table.alias
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manager = Arel::SelectManager.new Table.engine
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manager.from Nodes::InnerJoin.new(table, aliaz, table[:id].eq(aliaz[:id]))
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2010-10-18 18:41:21 -04:00
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manager.join_sql.must_be_like %{
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2010-08-24 20:59:03 -04:00
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INNER JOIN "users" "users_2" "users"."id" = "users_2"."id"
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2010-08-19 13:37:50 -04:00
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}
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2010-10-18 18:41:21 -04:00
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check manager.joins(manager).must_equal manager.join_sql
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2010-08-19 13:37:50 -04:00
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end
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it 'returns outer join sql' do
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table = Table.new :users
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aliaz = table.alias
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manager = Arel::SelectManager.new Table.engine
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manager.from Nodes::OuterJoin.new(table, aliaz, table[:id].eq(aliaz[:id]))
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2010-10-18 18:41:21 -04:00
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manager.join_sql.must_be_like %{
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2010-09-12 22:22:19 -04:00
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LEFT OUTER JOIN "users" "users_2" "users"."id" = "users_2"."id"
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2010-08-19 13:37:50 -04:00
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}
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2010-10-18 18:41:21 -04:00
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check manager.joins(manager).must_equal manager.join_sql
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2010-08-19 13:37:50 -04:00
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end
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2010-09-12 18:45:59 -04:00
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it 'returns string join sql' do
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table = Table.new :users
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aliaz = table.alias
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manager = Arel::SelectManager.new Table.engine
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manager.from Nodes::StringJoin.new(table, 'hello')
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2010-10-18 18:41:21 -04:00
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manager.join_sql.must_be_like %{ 'hello' }
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check manager.joins(manager).must_equal manager.join_sql
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2010-09-12 18:45:59 -04:00
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end
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2010-09-28 19:57:33 -04:00
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it 'returns nil join sql' do
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manager = Arel::SelectManager.new Table.engine
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2010-10-18 18:41:21 -04:00
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manager.join_sql.must_be_nil
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2010-09-28 19:57:33 -04:00
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end
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2010-08-19 13:37:50 -04:00
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end
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2010-08-24 21:36:59 -04:00
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describe 'order_clauses' do
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it 'returns order clauses as a list' do
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table = Table.new :users
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aliaz = table.alias
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manager = Arel::SelectManager.new Table.engine
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manager.from table
|
|
|
|
manager.order table[:id]
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.order_clauses.first.must_be_like %{ "users"."id" }
|
2010-08-24 21:36:59 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-09-07 18:47:38 -04:00
|
|
|
describe 'group' do
|
|
|
|
it 'takes an attribute' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
|
|
|
manager.group table[:id]
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{
|
2010-09-07 18:47:38 -04:00
|
|
|
SELECT FROM "users" GROUP BY "users"."id"
|
|
|
|
}
|
|
|
|
end
|
|
|
|
|
|
|
|
it 'chains' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-10-18 18:41:21 -04:00
|
|
|
check manager.group(table[:id]).must_equal manager
|
2010-09-07 18:47:38 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it 'takes multiple args' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
|
|
|
manager.group table[:id], table[:name]
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{
|
2010-09-07 18:47:38 -04:00
|
|
|
SELECT FROM "users" GROUP BY "users"."id", "users"."name"
|
|
|
|
}
|
|
|
|
end
|
2010-09-07 19:09:58 -04:00
|
|
|
|
|
|
|
# FIXME: backwards compat
|
|
|
|
it 'makes strings literals' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
|
|
|
manager.group 'foo'
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{ SELECT FROM "users" GROUP BY foo }
|
2010-09-07 19:09:58 -04:00
|
|
|
end
|
2010-09-07 18:47:38 -04:00
|
|
|
end
|
|
|
|
|
2010-08-18 14:32:44 -04:00
|
|
|
describe 'delete' do
|
|
|
|
it "copies from" do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
|
|
|
manager.delete
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{ DELETE FROM "users" }
|
2010-08-18 14:32:44 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it "copies where" do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
|
|
|
manager.where table[:id].eq 10
|
|
|
|
manager.delete
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{
|
2010-08-18 14:32:44 -04:00
|
|
|
DELETE FROM "users" WHERE "users"."id" = 10
|
|
|
|
}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-10-12 17:17:26 -04:00
|
|
|
describe 'where_sql' do
|
|
|
|
it 'gives me back the where sql' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
|
|
|
manager.where table[:id].eq 10
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.where_sql.must_be_like %{ WHERE "users"."id" = 10 }
|
2010-10-12 17:17:26 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it 'returns nil when there are no wheres' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.where_sql.must_be_nil
|
2010-10-12 17:17:26 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-14 22:48:33 -04:00
|
|
|
describe 'update' do
|
2010-09-14 16:39:33 -04:00
|
|
|
it 'copies limits' do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
|
|
|
manager.take 1
|
|
|
|
manager.update(SqlLiteral.new('foo = bar'))
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{
|
2010-09-14 16:39:33 -04:00
|
|
|
UPDATE "users" SET foo = bar
|
|
|
|
WHERE "users"."id" IN (SELECT "users"."id" FROM "users" LIMIT 1)
|
|
|
|
}
|
|
|
|
end
|
|
|
|
|
|
|
|
it 'copies order' do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
|
|
|
manager.order :foo
|
|
|
|
manager.update(SqlLiteral.new('foo = bar'))
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{
|
2010-09-14 16:39:33 -04:00
|
|
|
UPDATE "users" SET foo = bar
|
|
|
|
WHERE "users"."id" IN (SELECT "users"."id" FROM "users" ORDER BY foo)
|
|
|
|
}
|
|
|
|
end
|
|
|
|
|
2010-08-18 12:52:16 -04:00
|
|
|
it 'takes a string' do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
2010-08-18 19:32:32 -04:00
|
|
|
manager.update(SqlLiteral.new('foo = bar'))
|
2010-08-18 12:52:16 -04:00
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{ UPDATE "users" SET foo = bar }
|
2010-08-18 12:52:16 -04:00
|
|
|
end
|
|
|
|
|
2010-08-14 22:48:33 -04:00
|
|
|
it 'copies where clauses' do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.where table[:id].eq 10
|
|
|
|
manager.from table
|
|
|
|
manager.update(table[:id] => 1)
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{
|
2010-08-14 22:48:33 -04:00
|
|
|
UPDATE "users" SET "id" = 1 WHERE "users"."id" = 10
|
|
|
|
}
|
|
|
|
end
|
|
|
|
|
|
|
|
it 'executes an update statement' do
|
|
|
|
engine = EngineProxy.new Table.engine
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new engine
|
|
|
|
manager.from table
|
|
|
|
manager.update(table[:id] => 1)
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
engine.executed.last.must_be_like %{
|
2010-08-14 22:48:33 -04:00
|
|
|
UPDATE "users" SET "id" = 1
|
|
|
|
}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-13 11:11:08 -04:00
|
|
|
describe 'project' do
|
2010-08-23 17:59:53 -04:00
|
|
|
it 'takes multiple args' do
|
|
|
|
table = Table.new :users
|
|
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.project Nodes::SqlLiteral.new('foo'),
|
|
|
|
Nodes::SqlLiteral.new('bar')
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{ SELECT foo, bar }
|
2010-08-23 17:59:53 -04:00
|
|
|
end
|
|
|
|
|
2010-08-13 11:11:08 -04:00
|
|
|
it 'takes strings' do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-18 19:32:32 -04:00
|
|
|
manager.project Nodes::SqlLiteral.new('*')
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{ SELECT * }
|
2010-08-13 11:11:08 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it "takes sql literals" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-13 11:11:08 -04:00
|
|
|
manager.project Nodes::SqlLiteral.new '*'
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{
|
2010-08-13 11:11:08 -04:00
|
|
|
SELECT *
|
2010-08-13 18:30:22 -04:00
|
|
|
}
|
2010-08-13 11:11:08 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-13 00:21:20 -04:00
|
|
|
describe 'take' do
|
|
|
|
it "knows take" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-13 00:21:20 -04:00
|
|
|
manager.from(table).project(table['id'])
|
|
|
|
manager.where(table['id'].eq(1))
|
|
|
|
manager.take 1
|
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{
|
2010-08-13 00:21:20 -04:00
|
|
|
SELECT "users"."id"
|
|
|
|
FROM "users"
|
|
|
|
WHERE "users"."id" = 1
|
|
|
|
LIMIT 1
|
2010-08-13 18:30:22 -04:00
|
|
|
}
|
2010-08-13 00:21:20 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it "chains" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.take(1).must_equal manager
|
2010-08-13 00:21:20 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-12 19:19:54 -04:00
|
|
|
describe 'where' do
|
|
|
|
it "knows where" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-12 19:19:54 -04:00
|
|
|
manager.from(table).project(table['id'])
|
|
|
|
manager.where(table['id'].eq(1))
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like %{
|
2010-08-12 19:19:54 -04:00
|
|
|
SELECT "users"."id"
|
|
|
|
FROM "users"
|
|
|
|
WHERE "users"."id" = 1
|
2010-08-13 18:30:22 -04:00
|
|
|
}
|
2010-08-12 19:19:54 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it "chains" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-12 19:19:54 -04:00
|
|
|
manager.from(table)
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.project(table['id']).where(table['id'].eq 1).must_equal manager
|
2010-08-12 19:19:54 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-18 19:32:32 -04:00
|
|
|
describe "join" do
|
|
|
|
it "joins itself" do
|
|
|
|
left = Table.new :users
|
|
|
|
right = left.alias
|
|
|
|
predicate = left[:id].eq(right[:id])
|
|
|
|
|
|
|
|
mgr = left.join(right)
|
|
|
|
mgr.project Nodes::SqlLiteral.new('*')
|
2010-10-18 18:41:21 -04:00
|
|
|
check mgr.on(predicate).must_equal mgr
|
2010-08-18 19:32:32 -04:00
|
|
|
|
2010-10-18 18:41:21 -04:00
|
|
|
mgr.to_sql.must_be_like %{
|
2010-08-18 19:32:32 -04:00
|
|
|
SELECT * FROM "users"
|
|
|
|
INNER JOIN "users" "users_2"
|
|
|
|
ON "users"."id" = "users_2"."id"
|
|
|
|
}
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2010-08-12 19:19:54 -04:00
|
|
|
describe 'from' do
|
|
|
|
it "makes sql" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-08-12 19:19:54 -04:00
|
|
|
|
|
|
|
manager.from table
|
|
|
|
manager.project table['id']
|
2010-10-18 18:41:21 -04:00
|
|
|
manager.to_sql.must_be_like 'SELECT "users"."id" FROM "users"'
|
2010-08-12 19:19:54 -04:00
|
|
|
end
|
|
|
|
|
|
|
|
it "chains" do
|
|
|
|
table = Table.new :users
|
2010-08-13 18:30:22 -04:00
|
|
|
manager = Arel::SelectManager.new Table.engine
|
2010-10-18 18:41:21 -04:00
|
|
|
check manager.from(table).project(table['id']).must_equal manager
|
|
|
|
manager.to_sql.must_be_like 'SELECT "users"."id" FROM "users"'
|
2010-08-12 19:19:54 -04:00
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|