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require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
module ActiveRelation
describe Selection do
before do
@relation = Table.new(:users)
@predicate = Equality.new(@relation[:id], 1.bind(@relation))
end
describe '#initialize' do
it "manufactures nested selection relations if multiple predicates are provided" do
@predicate2 = LessThan.new(@relation[:age], 2.bind(@relation))
Selection.new(@relation, @predicate, @predicate2). \
should == Selection.new(Selection.new(@relation, @predicate2), @predicate)
end
end
describe '#qualify' do
it "descends" do
Selection.new(@relation, @predicate).qualify. \
should == Selection.new(@relation, @predicate).descend(&:qualify)
end
end
describe '#descend' do
it "distributes over the relation and predicates" do
Selection.new(@relation, @predicate).descend(&:qualify). \
should == Selection.new(@relation.descend(&:qualify), @predicate.descend(&:qualify))
end
end
describe '#to_sql' do
it "manufactures sql with where clause conditions" do
Selection.new(@relation, @predicate).to_sql.should be_like("
SELECT `users`.`id`, `users`.`name`
FROM `users`
WHERE `users`.`id` = 1
")
end
it "allows arbitrary sql" do
Selection.new(@relation, "asdf".bind(@relation)).to_sql.should be_like("
SELECT `users`.`id`, `users`.`name`
FROM `users`
WHERE asdf
")
end
end
end
end
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