57 lines
1.6 KiB
Ruby
57 lines
1.6 KiB
Ruby
require 'minitest/autorun'
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require 'prism'
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require 'tmpdir'
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class OrmRelationTest < Minitest::Test
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def setup
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@dir = Dir.mktmpdir('prism-relation-store')
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@store = Prism::Orm::Store.new(File.join(@dir, 'test.pstore'))
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@store.create_table(:items, %w[id name category])
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item_class = Class.new(Prism::Orm::Model) do
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table_name :items
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end
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item_class.store = @store
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Object.const_set(:Item, item_class)
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end
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def teardown
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FileUtils.remove_entry(@dir)
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Object.send(:remove_const, :Item) if Object.const_defined?(:Item)
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end
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def test_offset_skips_leading_rows
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%w[a b c d].each { |name| Item.create!(name: name) }
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names = Item.order(:name).offset(2).map(&:name)
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assert_equal %w[c d], names
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end
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def test_offset_combined_with_limit_paginates
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%w[a b c d e].each { |name| Item.create!(name: name) }
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page_two = Item.order(:name).offset(2).limit(2).map(&:name)
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assert_equal %w[c d], page_two
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end
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def test_chained_where_calls_combine_with_and_semantics
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Item.create!(name: 'match', category: 'tools')
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Item.create!(name: 'match', category: 'other')
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Item.create!(name: 'nope', category: 'tools')
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result = Item.where(name: 'match').where(category: 'tools').to_a
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assert_equal 1, result.size
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assert_equal 'match', result.first.name
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end
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def test_relation_is_enumerable
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Item.create!(name: 'b')
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Item.create!(name: 'a')
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assert_equal %w[a b], Item.order(:name).sort_by(&:name).map(&:name)
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assert_equal 2, Item.all.count
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end
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def test_exists_predicate
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refute Item.where(name: 'ghost').exists?
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Item.create!(name: 'ghost')
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assert Item.where(name: 'ghost').exists?
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end
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end
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