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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describe 'tree manager' do
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2010-08-13 11:11:08 -04:00
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describe 'project' do
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it 'takes strings' do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.project '*'
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manager.to_sql.should == %{
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SELECT *
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}.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
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end
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it "takes sql literals" do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.project Nodes::SqlLiteral.new '*'
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manager.to_sql.should == %{
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SELECT *
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}.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
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end
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end
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2010-08-13 00:21:20 -04:00
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describe 'take' do
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it "knows take" do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.from(table).project(table['id'])
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manager.where(table['id'].eq(1))
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manager.take 1
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manager.to_sql.should == %{
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SELECT "users"."id"
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FROM "users"
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WHERE "users"."id" = 1
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LIMIT 1
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}.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
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end
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it "chains" do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.take(1).should == manager
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end
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end
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2010-08-12 19:19:54 -04:00
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describe 'where' do
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it "knows where" do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.from(table).project(table['id'])
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manager.where(table['id'].eq(1))
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manager.to_sql.should == %{
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SELECT "users"."id"
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FROM "users"
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WHERE "users"."id" = 1
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}.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
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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::TreeManager.new Table.engine
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manager.from(table)
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manager.project(table['id']).where(table['id'].eq 1).should == manager
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end
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end
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describe 'from' do
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it "makes sql" do
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table = Table.new :users
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manager = Arel::TreeManager.new Table.engine
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manager.from table
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manager.project table['id']
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manager.to_sql.should == 'SELECT "users"."id" FROM "users"'
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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::TreeManager.new Table.engine
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manager.from(table).project(table['id']).should == manager
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manager.to_sql.should == 'SELECT "users"."id" FROM "users"'
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end
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end
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end
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end
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