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# frozen_string_literal: true
require_relative '../helper'
class Arel::Nodes::ExtractTest < Arel::Spec
it "should extract field" do
table = Arel::Table.new :users
table[:timestamp].extract('date').to_sql.must_be_like %{
EXTRACT(DATE FROM "users"."timestamp")
}
end
describe "as" do
it 'should alias the extract' do
table = Arel::Table.new :users
table[:timestamp].extract('date').as('foo').to_sql.must_be_like %{
EXTRACT(DATE FROM "users"."timestamp") AS foo
}
end
it 'should not mutate the extract' do
table = Arel::Table.new :users
extract = table[:timestamp].extract('date')
before = extract.dup
extract.as('foo')
assert_equal extract, before
end
end
describe 'equality' do
it 'is equal with equal ivars' do
table = Arel::Table.new :users
array = [table[:attr].extract('foo'), table[:attr].extract('foo')]
assert_equal 1, array.uniq.size
end
it 'is not equal with different ivars' do
table = Arel::Table.new :users
array = [table[:attr].extract('foo'), table[:attr].extract('bar')]
assert_equal 2, array.uniq.size
end
end
end
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