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require File.join(File.dirname(__FILE__), '..', '..', 'spec_helper')
module ActiveRelation
describe Rename do
before do
@relation1 = Table.new(:foo)
@relation2 = Table.new(:bar)
@renamed_relation = Rename.new(@relation1, @relation1[:id] => :schmid)
end
describe '#initialize' do
it "manufactures nested rename relations if multiple renames are provided" do
Rename.new(@relation1, @relation1[:id] => :humpty, @relation1[:name] => :dumpty). \
should == Rename.new(Rename.new(@relation1, @relation1[:id] => :humpty), @relation1[:name] => :dumpty)
end
end
describe '==' do
it "obtains if the relation, attribute, and rename are identical" do
Rename.new(@relation1, @relation1[:id] => :humpty).should == Rename.new(@relation1, @relation1[:id] => :humpty)
Rename.new(@relation1, @relation1[:id] => :humpty).should_not == Rename.new(@relation1, @relation1[:id] => :dumpty)
Rename.new(@relation1, @relation1[:id] => :humpty).should_not == Rename.new(@relation2, @relation2[:id] => :humpty)
end
end
describe '#attributes' do
it "manufactures a list of attributes with the renamed attribute renameed" do
Rename.new(@relation1, @relation1[:id] => :schmid).attributes.should ==
(@relation1.attributes - [@relation1[:id]]) + [@relation1[:id].as(:schmid)]
end
end
describe '[]' do
it 'indexes attributes by rename' do
@renamed_relation[:id].should be_nil
@renamed_relation[:schmid].should == @relation1[:id].as(:schmid)
end
end
describe '#qualify' do
it "distributes over the relation and renames" do
Rename.new(@relation1, @relation1[:id] => :schmid).qualify. \
should == Rename.new(@relation1.qualify, @relation1[:id].qualify => :schmid)
end
end
describe '#to_sql' do
it 'manufactures sql renameing the attribute' do
@renamed_relation.to_sql.should be_like("""
SELECT `foo`.`name`, `foo`.`id` AS 'schmid'
FROM `foo`
""")
end
end
end
end
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