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require 'spec_helper'
module Arel
describe Join do
before do
@relation1 = Array.new([
[1, 'duck' ],
[2, 'duck' ],
[3, 'goose']
], [:id, :name])
@relation2 = @relation1.alias
end
describe InnerJoin do
describe '#call' do
it 'combines the two tables where the predicate obtains' do
@relation1 \
.join(@relation2) \
.on(@relation1[:id].eq(@relation2[:id])) \
.let do |relation|
relation.call.should == [
Row.new(relation, [1, 'duck', 1, 'duck' ]),
Row.new(relation, [2, 'duck', 2, 'duck' ]),
Row.new(relation, [3, 'goose', 3, 'goose'])
]
end
end
end
end
end
end
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