aboutsummaryrefslogtreecommitdiffstats
path: root/test/nodes/test_extract.rb
blob: eb9855326845e72e851ca8e3db2bd78029a4dc27 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
require 'helper'

describe Arel::Nodes::Extract do
  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