mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
947 lines
28 KiB
Ruby
947 lines
28 KiB
Ruby
require 'helper'
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module Arel
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class EngineProxy
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attr_reader :executed
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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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def initialize engine
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@engine = engine
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@executed = []
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@connection_pool = self
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@spec = self
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@config = { :adapter => 'sqlite3' }
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end
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def with_connection
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yield self
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end
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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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def columns table, message = nil
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@engine.connection.columns table, message
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end
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def columns_hash
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@engine.connection.columns_hash
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end
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def table_exists? name
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@engine.connection.table_exists? name
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end
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def tables
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@engine.connection.tables
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end
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def execute sql, name = nil, *args
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@executed << sql
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end
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alias :update :execute
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alias :delete :execute
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alias :insert :execute
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end
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describe 'select manager' do
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def test_join_sources
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manager = Arel::SelectManager.new Table.engine
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manager.join_sources << Arel::Nodes::StringJoin.new('foo')
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assert_equal "SELECT FROM 'foo'", manager.to_sql
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end
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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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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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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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manager.to_sql.must_be_like %{ SELECT * FROM "users" ORDER BY foo }
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end
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end
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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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manager.to_sql.must_be_like %{ SELECT FROM "users" GROUP BY foo }
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end
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end
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describe 'as' do
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it 'makes an AS node by grouping the AST' do
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manager = Arel::SelectManager.new Table.engine
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as = manager.as(Arel.sql('foo'))
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assert_kind_of Arel::Nodes::Grouping, as.left
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assert_equal manager.ast, as.left.expr
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assert_equal 'foo', as.right
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end
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it 'converts right to SqlLiteral if a string' do
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manager = Arel::SelectManager.new Table.engine
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as = manager.as('foo')
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assert_kind_of Arel::Nodes::SqlLiteral, as.right
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end
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it 'can make a subselect' do
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manager = Arel::SelectManager.new Table.engine
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manager.project Arel.star
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manager.from Arel.sql('zomg')
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as = manager.as(Arel.sql('foo'))
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manager = Arel::SelectManager.new Table.engine
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manager.project Arel.sql('name')
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manager.from as
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manager.to_sql.must_be_like "SELECT name FROM (SELECT * FROM zomg ) foo"
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end
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end
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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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end
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it 'should support any ast' do
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table = Table.new :users
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manager1 = Arel::SelectManager.new Table.engine
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manager2 = Arel::SelectManager.new Table.engine
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manager2.project(Arel.sql('*'))
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manager2.from table
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manager1.project Arel.sql('lol')
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as = manager2.as Arel.sql('omg')
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manager1.from(as)
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manager1.to_sql.must_be_like %{
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SELECT lol FROM (SELECT * FROM "users" ) omg
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}
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end
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end
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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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it 'can have multiple items specified separately' 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.having 'bar'
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mgr.to_sql.must_be_like %{ SELECT FROM "users" HAVING foo AND bar }
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end
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it 'can have multiple items specified together' do
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table = Table.new :users
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mgr = table.from table
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mgr.having 'foo', 'bar'
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mgr.to_sql.must_be_like %{ SELECT FROM "users" HAVING foo AND bar }
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end
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end
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describe 'on' do
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it 'converts to sqlliterals' do
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table = Table.new :users
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right = table.alias
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mgr = table.from table
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mgr.join(right).on("omg")
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mgr.to_sql.must_be_like %{ SELECT FROM "users" INNER JOIN "users" "users_2" ON omg }
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end
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it 'converts to sqlliterals' do
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table = Table.new :users
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right = table.alias
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mgr = table.from table
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mgr.join(right).on("omg", "123")
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mgr.to_sql.must_be_like %{ SELECT FROM "users" INNER JOIN "users" "users_2" ON omg AND 123 }
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end
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end
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end
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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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mgr.to_sql.wont_equal m2.to_sql
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end
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it 'makes updates to the correct copy' 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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m3 = m2.clone
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m2.project "foo"
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mgr.to_sql.wont_equal m2.to_sql
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m3.to_sql.must_equal mgr.to_sql
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end
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end
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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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mgr.to_sql.must_be_like %{ SELECT FROM "users" "foo" OFFSET 10 }
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end
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end
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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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mgr.to_sql.must_be_like %{ SELECT FROM "users" OFFSET 10 }
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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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end
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end
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describe 'offset' 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.offset = 10
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mgr.to_sql.must_be_like %{ SELECT FROM "users" OFFSET 10 }
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end
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it 'should remove an offset' do
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table = Table.new :users
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mgr = table.from table
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mgr.offset = 10
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mgr.to_sql.must_be_like %{ SELECT FROM "users" OFFSET 10 }
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mgr.offset = nil
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mgr.to_sql.must_be_like %{ SELECT FROM "users" }
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end
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it 'should return the offset' do
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table = Table.new :users
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mgr = table.from table
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mgr.offset = 10
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assert_equal 10, mgr.offset
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end
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end
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describe 'exists' do
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it 'should create an exists clause' do
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table = Table.new(:users)
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manager = Arel::SelectManager.new Table.engine, table
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manager.project SqlLiteral.new '*'
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m2 = Arel::SelectManager.new(manager.engine)
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m2.project manager.exists
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m2.to_sql.must_be_like %{ SELECT EXISTS (#{manager.to_sql}) }
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end
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it 'can be aliased' do
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table = Table.new(:users)
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manager = Arel::SelectManager.new Table.engine, table
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manager.project SqlLiteral.new '*'
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m2 = Arel::SelectManager.new(manager.engine)
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m2.project manager.exists.as('foo')
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m2.to_sql.must_be_like %{ SELECT EXISTS (#{manager.to_sql}) AS foo }
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end
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end
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describe 'union' do
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before do
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table = Table.new :users
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@m1 = Arel::SelectManager.new Table.engine, table
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@m1.project Arel.star
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@m1.where(table[:age].lt(18))
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@m2 = Arel::SelectManager.new Table.engine, table
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@m2.project Arel.star
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@m2.where(table[:age].gt(99))
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end
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it 'should union two managers' do
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# FIXME should this union "managers" or "statements" ?
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# FIXME this probably shouldn't return a node
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node = @m1.union @m2
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# maybe FIXME: decide when wrapper parens are needed
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node.to_sql.must_be_like %{
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( SELECT * FROM "users" WHERE "users"."age" < 18 UNION SELECT * FROM "users" WHERE "users"."age" > 99 )
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}
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end
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it 'should union all' do
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node = @m1.union :all, @m2
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node.to_sql.must_be_like %{
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( SELECT * FROM "users" WHERE "users"."age" < 18 UNION ALL SELECT * FROM "users" WHERE "users"."age" > 99 )
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}
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end
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end
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describe 'intersect' do
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before do
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table = Table.new :users
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@m1 = Arel::SelectManager.new Table.engine, table
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@m1.project Arel.star
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@m1.where(table[:age].gt(18))
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@m2 = Arel::SelectManager.new Table.engine, table
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@m2.project Arel.star
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@m2.where(table[:age].lt(99))
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end
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it 'should interect two managers' do
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# FIXME should this intersect "managers" or "statements" ?
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# FIXME this probably shouldn't return a node
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node = @m1.intersect @m2
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# maybe FIXME: decide when wrapper parens are needed
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node.to_sql.must_be_like %{
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( SELECT * FROM "users" WHERE "users"."age" > 18 INTERSECT SELECT * FROM "users" WHERE "users"."age" < 99 )
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}
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end
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end
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describe 'except' do
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before do
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table = Table.new :users
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@m1 = Arel::SelectManager.new Table.engine, table
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@m1.project Arel.star
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@m1.where(table[:age].in(18..60))
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@m2 = Arel::SelectManager.new Table.engine, table
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@m2.project Arel.star
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@m2.where(table[:age].in(40..99))
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end
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it 'should except two managers' do
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# FIXME should this except "managers" or "statements" ?
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# FIXME this probably shouldn't return a node
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node = @m1.except @m2
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# maybe FIXME: decide when wrapper parens are needed
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node.to_sql.must_be_like %{
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( SELECT * FROM "users" WHERE "users"."age" BETWEEN 18 AND 60 EXCEPT SELECT * FROM "users" WHERE "users"."age" BETWEEN 40 AND 99 )
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}
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end
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end
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describe 'with' do
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it "should support WITH RECURSIVE" do
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comments = Table.new(:comments)
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comments_id = comments[:id]
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comments_parent_id = comments[:parent_id]
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replies = Table.new(:replies)
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replies_id = replies[:id]
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recursive_term = Arel::SelectManager.new Table.engine
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recursive_term.from(comments).project(comments_id, comments_parent_id).where(comments_id.eq 42)
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non_recursive_term = Arel::SelectManager.new Table.engine
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non_recursive_term.from(comments).project(comments_id, comments_parent_id).join(replies).on(comments_parent_id.eq replies_id)
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union = recursive_term.union(non_recursive_term)
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as_statement = Arel::Nodes::As.new replies, union
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manager = Arel::SelectManager.new Table.engine
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manager.with(:recursive, as_statement).from(replies).project(Arel.star)
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sql = manager.to_sql
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sql.must_be_like %{
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WITH RECURSIVE "replies" AS (
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SELECT "comments"."id", "comments"."parent_id" FROM "comments" WHERE "comments"."id" = 42
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UNION
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SELECT "comments"."id", "comments"."parent_id" FROM "comments" INNER JOIN "replies" ON "comments"."parent_id" = "replies"."id"
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)
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SELECT * FROM "replies"
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}
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end
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end
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describe 'ast' do
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it 'should return the ast' do
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table = Table.new :users
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mgr = table.from table
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ast = mgr.ast
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mgr.visitor.accept(ast).must_equal mgr.to_sql
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end
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it 'should allow orders to work when the ast is grepped' do
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table = Table.new :users
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mgr = table.from table
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mgr.project Arel.sql '*'
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mgr.from table
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mgr.orders << Arel::Nodes::Ascending.new(Arel.sql('foo'))
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mgr.ast.grep(Arel::Nodes::OuterJoin)
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mgr.to_sql.must_be_like %{ SELECT * FROM "users" ORDER BY foo ASC }
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end
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end
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describe 'taken' do
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it 'should return limit' do
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manager = Arel::SelectManager.new Table.engine
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manager.take 10
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manager.taken.must_equal 10
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end
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end
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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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engine.executed.last.must_be_like %{
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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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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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end
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end
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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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manager.orders.must_equal [order]
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end
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end
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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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manager.to_sql.must_be_like %{
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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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manager.to_sql.must_be_like %{
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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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manager.order(table[:id]).must_equal manager
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end
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it 'has order attributes' 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].desc
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manager.to_sql.must_be_like %{
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SELECT * FROM "users" ORDER BY "users"."id" DESC
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}
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end
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it 'has order attributes for expressions' 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].count.desc
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manager.to_sql.must_be_like %{
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SELECT * FROM "users" ORDER BY COUNT("users"."id") DESC
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}
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end
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end
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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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manager.to_sql.must_be_like %{
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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,
|
|
predicate,
|
|
left[:name].eq(right[:name])
|
|
)
|
|
manager.to_sql.must_be_like %{
|
|
SELECT FROM "users"
|
|
INNER JOIN "users" "users_2"
|
|
ON "users"."id" = "users_2"."id" AND
|
|
"users"."id" = "users_2"."id" AND
|
|
"users"."name" = "users_2"."name"
|
|
}
|
|
end
|
|
end
|
|
|
|
it 'should hand back froms' do
|
|
relation = Arel::SelectManager.new Table.engine
|
|
assert_equal [], relation.froms
|
|
end
|
|
|
|
it 'should create and nodes' do
|
|
relation = Arel::SelectManager.new Table.engine
|
|
children = ['foo', 'bar', 'baz']
|
|
clause = relation.create_and children
|
|
assert_kind_of Arel::Nodes::And, clause
|
|
assert_equal children, clause.children
|
|
end
|
|
|
|
it 'should create insert managers' do
|
|
relation = Arel::SelectManager.new Table.engine
|
|
insert = relation.create_insert
|
|
assert_kind_of Arel::InsertManager, insert
|
|
end
|
|
|
|
it 'should create join nodes' do
|
|
relation = Arel::SelectManager.new Table.engine
|
|
join = relation.create_join 'foo', 'bar'
|
|
assert_kind_of Arel::Nodes::InnerJoin, join
|
|
assert_equal 'foo', join.left
|
|
assert_equal 'bar', join.right
|
|
end
|
|
|
|
it 'should create join nodes with a klass' do
|
|
relation = Arel::SelectManager.new Table.engine
|
|
join = relation.create_join 'foo', 'bar', Arel::Nodes::OuterJoin
|
|
assert_kind_of Arel::Nodes::OuterJoin, join
|
|
assert_equal 'foo', join.left
|
|
assert_equal 'bar', join.right
|
|
end
|
|
|
|
describe 'join' do
|
|
it 'responds to join' do
|
|
left = Table.new :users
|
|
right = left.alias
|
|
predicate = left[:id].eq(right[:id])
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from left
|
|
manager.join(right).on(predicate)
|
|
manager.to_sql.must_be_like %{
|
|
SELECT FROM "users"
|
|
INNER JOIN "users" "users_2"
|
|
ON "users"."id" = "users_2"."id"
|
|
}
|
|
end
|
|
|
|
it 'takes a class' do
|
|
left = Table.new :users
|
|
right = left.alias
|
|
predicate = left[:id].eq(right[:id])
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from left
|
|
manager.join(right, Nodes::OuterJoin).on(predicate)
|
|
manager.to_sql.must_be_like %{
|
|
SELECT FROM "users"
|
|
LEFT OUTER JOIN "users" "users_2"
|
|
ON "users"."id" = "users_2"."id"
|
|
}
|
|
end
|
|
|
|
it 'noops on nil' do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.join(nil).must_equal manager
|
|
end
|
|
end
|
|
|
|
describe 'joins' do
|
|
it 'returns join sql' do
|
|
table = Table.new :users
|
|
aliaz = table.alias
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from Nodes::InnerJoin.new(aliaz, table[:id].eq(aliaz[:id]))
|
|
manager.join_sql.must_be_like %{
|
|
INNER JOIN "users" "users_2" "users"."id" = "users_2"."id"
|
|
}
|
|
end
|
|
|
|
it 'returns outer join sql' do
|
|
table = Table.new :users
|
|
aliaz = table.alias
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from Nodes::OuterJoin.new(aliaz, table[:id].eq(aliaz[:id]))
|
|
manager.join_sql.must_be_like %{
|
|
LEFT OUTER JOIN "users" "users_2" "users"."id" = "users_2"."id"
|
|
}
|
|
end
|
|
|
|
it 'returns string join sql' do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from Nodes::StringJoin.new('hello')
|
|
manager.join_sql.must_be_like %{ 'hello' }
|
|
end
|
|
|
|
it 'returns nil join sql' do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.join_sql.must_be_nil
|
|
end
|
|
end
|
|
|
|
describe 'order_clauses' do
|
|
it 'returns order clauses as a list' do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from table
|
|
manager.order table[:id]
|
|
manager.order_clauses.first.must_be_like %{ "users"."id" }
|
|
end
|
|
end
|
|
|
|
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]
|
|
manager.to_sql.must_be_like %{
|
|
SELECT FROM "users" GROUP BY "users"."id"
|
|
}
|
|
end
|
|
|
|
it 'chains' do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.group(table[:id]).must_equal manager
|
|
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]
|
|
manager.to_sql.must_be_like %{
|
|
SELECT FROM "users" GROUP BY "users"."id", "users"."name"
|
|
}
|
|
end
|
|
|
|
# FIXME: backwards compat
|
|
it 'makes strings literals' do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from table
|
|
manager.group 'foo'
|
|
manager.to_sql.must_be_like %{ SELECT FROM "users" GROUP BY foo }
|
|
end
|
|
end
|
|
|
|
describe 'delete' do
|
|
it "copies from" do
|
|
engine = EngineProxy.new Table.engine
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new engine
|
|
manager.from table
|
|
stmt = manager.compile_delete
|
|
|
|
stmt.to_sql.must_be_like %{ DELETE FROM "users" }
|
|
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
|
|
stmt = manager.compile_delete
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
DELETE FROM "users" WHERE "users"."id" = 10
|
|
}
|
|
end
|
|
end
|
|
|
|
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
|
|
manager.where_sql.must_be_like %{ WHERE "users"."id" = 10 }
|
|
end
|
|
|
|
it 'returns nil when there are no wheres' do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from table
|
|
manager.where_sql.must_be_nil
|
|
end
|
|
end
|
|
|
|
describe 'update' do
|
|
it 'copies limits' do
|
|
engine = EngineProxy.new Table.engine
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new engine
|
|
manager.from table
|
|
manager.take 1
|
|
stmt = manager.compile_update(SqlLiteral.new('foo = bar'))
|
|
stmt.key = table['id']
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
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
|
|
stmt = manager.compile_update(SqlLiteral.new('foo = bar'))
|
|
stmt.key = table['id']
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
UPDATE "users" SET foo = bar
|
|
WHERE "users"."id" IN (SELECT "users"."id" FROM "users" ORDER BY foo)
|
|
}
|
|
end
|
|
|
|
it 'takes a string' do
|
|
engine = EngineProxy.new Table.engine
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new engine
|
|
manager.from table
|
|
stmt = manager.compile_update(SqlLiteral.new('foo = bar'))
|
|
|
|
stmt.to_sql.must_be_like %{ UPDATE "users" SET foo = bar }
|
|
end
|
|
|
|
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
|
|
stmt = manager.compile_update(table[:id] => 1)
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
UPDATE "users" SET "id" = 1 WHERE "users"."id" = 10
|
|
}
|
|
end
|
|
|
|
it 'copies where clauses when nesting is triggered' do
|
|
engine = EngineProxy.new Table.engine
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new engine
|
|
manager.where table[:foo].eq 10
|
|
manager.take 42
|
|
manager.from table
|
|
stmt = manager.compile_update(table[:id] => 1)
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
UPDATE "users" SET "id" = 1 WHERE "users"."id" IN (SELECT "users"."id" FROM "users" WHERE "users"."foo" = 10 LIMIT 42)
|
|
}
|
|
end
|
|
|
|
it 'executes an update statement' do
|
|
engine = EngineProxy.new Table.engine
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new engine
|
|
manager.from table
|
|
stmt = manager.compile_update(table[:id] => 1)
|
|
|
|
stmt.to_sql.must_be_like %{
|
|
UPDATE "users" SET "id" = 1
|
|
}
|
|
end
|
|
end
|
|
|
|
describe 'project' do
|
|
it 'takes multiple args' do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.project Nodes::SqlLiteral.new('foo'),
|
|
Nodes::SqlLiteral.new('bar')
|
|
manager.to_sql.must_be_like %{ SELECT foo, bar }
|
|
end
|
|
|
|
it 'takes strings' do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.project Nodes::SqlLiteral.new('*')
|
|
manager.to_sql.must_be_like %{ SELECT * }
|
|
end
|
|
|
|
it "takes sql literals" do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.project Nodes::SqlLiteral.new '*'
|
|
manager.to_sql.must_be_like %{
|
|
SELECT *
|
|
}
|
|
end
|
|
end
|
|
|
|
describe 'take' do
|
|
it "knows take" do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from(table).project(table['id'])
|
|
manager.where(table['id'].eq(1))
|
|
manager.take 1
|
|
|
|
manager.to_sql.must_be_like %{
|
|
SELECT "users"."id"
|
|
FROM "users"
|
|
WHERE "users"."id" = 1
|
|
LIMIT 1
|
|
}
|
|
end
|
|
|
|
it "chains" do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.take(1).must_equal manager
|
|
end
|
|
|
|
it 'removes LIMIT when nil is passed' do
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.limit = 10
|
|
assert_match('LIMIT', manager.to_sql)
|
|
|
|
manager.limit = nil
|
|
refute_match('LIMIT', manager.to_sql)
|
|
end
|
|
end
|
|
|
|
describe 'where' do
|
|
it "knows where" do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from(table).project(table['id'])
|
|
manager.where(table['id'].eq(1))
|
|
manager.to_sql.must_be_like %{
|
|
SELECT "users"."id"
|
|
FROM "users"
|
|
WHERE "users"."id" = 1
|
|
}
|
|
end
|
|
|
|
it "chains" do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from(table)
|
|
manager.project(table['id']).where(table['id'].eq 1).must_equal manager
|
|
end
|
|
end
|
|
|
|
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('*')
|
|
mgr.on(predicate).must_equal mgr
|
|
|
|
mgr.to_sql.must_be_like %{
|
|
SELECT * FROM "users"
|
|
INNER JOIN "users" "users_2"
|
|
ON "users"."id" = "users_2"."id"
|
|
}
|
|
end
|
|
end
|
|
|
|
describe 'from' do
|
|
it "makes sql" do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
|
|
manager.from table
|
|
manager.project table['id']
|
|
manager.to_sql.must_be_like 'SELECT "users"."id" FROM "users"'
|
|
end
|
|
|
|
it "chains" do
|
|
table = Table.new :users
|
|
manager = Arel::SelectManager.new Table.engine
|
|
manager.from(table).project(table['id']).must_equal manager
|
|
manager.to_sql.must_be_like 'SELECT "users"."id" FROM "users"'
|
|
end
|
|
end
|
|
end
|
|
end
|