require 'abstract_unit' class AssertDifferenceTest < ActiveSupport::TestCase def setup @object = Class.new do attr_accessor :num def increment self.num += 1 end def decrement self.num -= 1 end end.new @object.num = 0 end if lambda { }.respond_to?(:binding) def test_assert_no_difference assert_no_difference '@object.num' do # ... end end def test_assert_difference assert_difference '@object.num', +1 do @object.increment end end def test_assert_difference_with_implicit_difference assert_difference '@object.num' do @object.increment end end def test_arbitrary_expression assert_difference '@object.num + 1', +2 do @object.increment @object.increment end end def test_negative_differences assert_difference '@object.num', -1 do @object.decrement end end def test_expression_is_evaluated_in_the_appropriate_scope local_scope = 'foo' silence_warnings do assert_difference('local_scope; @object.num') { @object.increment } end end def test_array_of_expressions assert_difference [ '@object.num', '@object.num + 1' ], +1 do @object.increment end end def test_array_of_expressions_identify_failure assert_difference ['@object.num', '1 + 1'] do @object.increment end fail 'should not get to here' rescue Exception => e assert_equal "<3> expected but was\n<2>.", e.message end def test_array_of_expressions_identify_failure_when_message_provided assert_difference ['@object.num', '1 + 1'], 1, 'something went wrong' do @object.increment end fail 'should not get to here' rescue Exception => e assert_equal "something went wrong.\n<3> expected but was\n<2>.", e.message end else def default_test; end end end # These should always pass if defined? ActiveSupport::Testing::Default class NotTestingThingsTest < Test::Unit::TestCase include ActiveSupport::Testing::Default end end class AlsoDoingNothingTest < ActiveSupport::TestCase end # Setup and teardown callbacks. class SetupAndTeardownTest < ActiveSupport::TestCase setup :reset_callback_record, :foo teardown :foo, :sentinel, :foo def test_inherited_setup_callbacks assert_equal [:reset_callback_record, :foo], self.class.setup_callback_chain.map(&:method) assert_equal [:foo], @called_back assert_equal [:foo, :sentinel, :foo], self.class.teardown_callback_chain.map(&:method) end def setup end def teardown end protected def reset_callback_record @called_back = [] end def foo @called_back << :foo end def sentinel assert_equal [:foo, :foo], @called_back end end class SubclassSetupAndTeardownTest < SetupAndTeardownTest setup :bar teardown :bar def test_inherited_setup_callbacks assert_equal [:reset_callback_record, :foo, :bar], self.class.setup_callback_chain.map(&:method) assert_equal [:foo, :bar], @called_back assert_equal [:foo, :sentinel, :foo, :bar], self.class.teardown_callback_chain.map(&:method) end protected def bar @called_back << :bar end def sentinel assert_equal [:foo, :bar, :bar, :foo], @called_back end end