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require File.expand_path('../../test_helper', __FILE__)
require 'method_definer'
require 'mocha/mock'
require 'mocha/any_instance_method'
class AnyInstanceMethodTest < Test::Unit::TestCase
include Mocha
def test_should_hide_original_method
klass = Class.new { def method_x; end }
method = AnyInstanceMethod.new(klass, :method_x)
method.hide_original_method
assert_equal false, klass.method_defined?(:method_x)
end
def test_should_not_raise_error_hiding_method_that_isnt_defined
klass = Class.new
method = AnyInstanceMethod.new(klass, :method_x)
assert_nothing_raised { method.hide_original_method }
end
def test_should_define_a_new_method
klass = Class.new { def method_x; end }
method = AnyInstanceMethod.new(klass, :method_x)
mocha = build_mock
mocha.expects(:method_x).with(:param1, :param2).returns(:result)
any_instance = Object.new
any_instance.define_instance_method(:mocha) { mocha }
klass.define_instance_method(:any_instance) { any_instance }
method.hide_original_method
method.define_new_method
instance = klass.new
result = instance.method_x(:param1, :param2)
assert_equal :result, result
assert mocha.__verified__?
end
def test_should_restore_original_method
klass = Class.new { def method_x; :original_result; end }
method = AnyInstanceMethod.new(klass, :method_x)
method.hide_original_method
method.define_new_method
method.remove_new_method
method.restore_original_method
instance = klass.new
assert instance.respond_to?(:method_x)
assert_equal :original_result, instance.method_x
end
def test_should_not_restore_original_method_if_none_was_defined_in_first_place
klass = Class.new { def method_x; :new_result; end }
method = AnyInstanceMethod.new(klass, :method_x)
method.restore_original_method
instance = klass.new
assert_equal :new_result, instance.method_x
end
def test_should_call_remove_new_method
klass = Class.new { def method_x; end }
any_instance = build_mock
any_instance_mocha = build_mock
any_instance.stubs(:mocha).returns(any_instance_mocha)
klass.define_instance_method(:any_instance) { any_instance }
method = AnyInstanceMethod.new(klass, :method_x)
method.replace_instance_method(:restore_original_method) { }
method.define_instance_accessor(:remove_called)
method.replace_instance_method(:remove_new_method) { self.remove_called = true }
method.unstub
assert method.remove_called
end
def test_should_call_restore_original_method
klass = Class.new { def method_x; end }
any_instance = build_mock
any_instance_mocha = build_mock
any_instance.stubs(:mocha).returns(any_instance_mocha)
klass.define_instance_method(:any_instance) { any_instance }
method = AnyInstanceMethod.new(klass, :method_x)
method.replace_instance_method(:remove_new_method) { }
method.define_instance_accessor(:restore_called)
method.replace_instance_method(:restore_original_method) { self.restore_called = true }
method.unstub
assert method.restore_called
end
def test_should_call_mock_unstub
klass = Class.new { def method_x; end }
method = AnyInstanceMethod.new(klass, :method_x)
method.replace_instance_method(:remove_new_method) { }
method.replace_instance_method(:restore_original_method) { }
mocha = Class.new { class << self; attr_accessor :unstub_method; end; def self.unstub(method); self.unstub_method = method; end; }
mocha.define_instance_method(:any_expectations?) { true }
method.replace_instance_method(:mock) { mocha }
method.unstub
assert_equal mocha.unstub_method, :method_x
end
def test_should_return_any_instance_mocha_for_stubbee
mocha = Object.new
any_instance = Object.new
any_instance.define_instance_method(:mocha) { mocha }
stubbee = Class.new
stubbee.define_instance_method(:any_instance) { any_instance }
method = AnyInstanceMethod.new(stubbee, :method_name)
assert_equal stubbee.any_instance.mocha, method.mock
end
private
def build_mock
Mock.new(nil)
end
end
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