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require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
module ActiveRelation
describe Rename do
before do
@relation = Table.new(:users)
end
describe '#initialize' do
it "manufactures nested rename relations if multiple renames are provided" do
Rename.new(@relation, @relation[:id] => :humpty, @relation[:name] => :dumpty). \
should == Rename.new(Rename.new(@relation, @relation[:name] => :dumpty), @relation[:id] => :humpty)
end
end
describe '==' do
before do
@another_relation = Table.new(:photos)
end
it "obtains if the relation, attribute, and rename are identical" do
Rename.new(@relation, @relation[:id] => :humpty).should == Rename.new(@relation, @relation[:id] => :humpty)
Rename.new(@relation, @relation[:id] => :humpty).should_not == Rename.new(@relation, @relation[:id] => :dumpty)
Rename.new(@relation, @relation[:id] => :humpty).should_not == Rename.new(@another_relation, @relation[:id] => :humpty)
end
end
describe '#attributes' do
before do
@renamed_relation = Rename.new(@relation, @relation[:id] => :schmid)
end
it "manufactures a list of attributes with the renamed attribute renameed" do
@renamed_relation.attributes.should include(@relation[:id].as(:schmid).bind(@renamed_relation))
@renamed_relation.attributes.should_not include(@relation[:id].bind(@renamed_relation))
@renamed_relation.attributes.should include(@relation[:name].bind(@renamed_relation))
@renamed_relation.should have(@relation.attributes.size).attributes
end
end
describe '#qualify' do
it "descends" do
Rename.new(@relation, @relation[:id] => :schmid).qualify. \
should == Rename.new(@relation, @relation[:id] => :schmid).descend(&:qualify)
end
end
describe '#descend' do
it "distributes a block over the relation and renames" do
Rename.new(@relation, @relation[:id] => :schmid).descend(&:qualify). \
should == Rename.new(@relation.descend(&:qualify), @relation[:id].qualify => :schmid)
end
end
describe '#to_sql' do
it 'manufactures sql renaming the attribute' do
Rename.new(@relation, @relation[:id] => :schmid).to_sql.should be_like("
SELECT `users`.`id` AS 'schmid', `users`.`name`
FROM `users`
")
end
end
end
end
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