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require 'spec_helper'
module Arel
describe Project do
before do
@relation = Array.new([
[1, 'duck' ],
[2, 'duck' ],
[3, 'goose']
], [[:id, Attributes::Integer], [:name, Attributes::String]])
end
describe '#call' do
it 'retains only the attributes that are provided' do
@relation \
.project(@relation[:id]) \
.tap do |relation|
rows = relation.call
@relation.array.zip(rows) do |tuple, row|
row.relation.should == relation
row.tuple.should == [tuple.first]
end
end
end
end
end
end
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