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require 'abstract_unit'
require 'active_support/core_ext/kernel/reporting'
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_match(/didn't change by/, e.message)
assert_match(/expected but was/, 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_match(/something went wrong/, e.message)
assert_match(/didn't change by/, e.message)
assert_match(/expected but was/, e.message)
end
else
def default_test; end
end
end
# These should always pass
if ActiveSupport::Testing.const_defined?(:Default)
class NotTestingThingsTest < Test::Unit::TestCase
include ActiveSupport::Testing::Default
end
end
class AlsoDoingNothingTest < ActiveSupport::TestCase
end
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