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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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