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# frozen_string_literal: true
require File.expand_path('../../test_helper', __FILE__)
require 'mocha/ruby_version'
require 'method_definer'
require 'mocha/class_methods'
require 'mocha/mockery'
require 'mocha/mock'
require 'mocha/any_instance_method'
require 'simple_counter'
class AnyInstanceMethodTest < Mocha::TestCase
include MethodDefiner
include Mocha
def class_with_method(method, result = nil)
Class.new do
extend ClassMethods
define_method(method) { result } if method
end
end
def test_should_not_raise_error_hiding_method_that_isnt_defined
klass = class_with_method(:irrelevant)
method = AnyInstanceMethod.new(klass, :method_x)
assert_nothing_raised { method.hide_original_method }
end
def test_should_define_a_new_method
klass = class_with_method(:method_x)
method = AnyInstanceMethod.new(klass, :method_x)
mocha = build_mock
mocha.expects(:method_x).with(:param1, :param2).returns(:result)
any_instance = Object.new
define_instance_method(any_instance, :mocha) { mocha }
define_instance_method(klass, :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_include_the_filename_and_line_number_in_exceptions
klass = class_with_method(:method_x)
method = AnyInstanceMethod.new(klass, :method_x)
mocha = build_mock
mocha.stubs(:method_x).raises(Exception)
any_instance = Object.new
define_instance_method(any_instance, :mocha) { mocha }
define_instance_method(klass, :any_instance) { any_instance }
method.hide_original_method
method.define_new_method
expected_filename = 'stubbed_method.rb'
expected_line_number = 52
exception = assert_raises(Exception) { klass.new.method_x }
matching_line = exception.backtrace.find do |line|
filename, line_number, _context = line.split(':')
filename.include?(expected_filename) && line_number.to_i == expected_line_number
end
assert_not_nil matching_line, "Expected to find #{expected_filename}:#{expected_line_number} in the backtrace:\n #{exception.backtrace.join("\n")}"
end
def test_remove_new_method_restores_original_method
klass = class_with_method(:method_x, :original_result)
method = AnyInstanceMethod.new(klass, :method_x)
method.hide_original_method
method.define_new_method
method.remove_new_method
instance = klass.new
assert instance.respond_to?(:method_x)
assert_equal :original_result, instance.method_x
end
def test_should_call_remove_new_method
klass = class_with_method(:method_x)
any_instance = build_mock
any_instance_mocha = build_mock
any_instance.stubs(:mocha).returns(any_instance_mocha)
define_instance_method(klass, :any_instance) { any_instance }
method = AnyInstanceMethod.new(klass, :method_x)
replace_instance_method(method, :reset_mocha) {}
define_instance_accessor(method, :remove_called)
replace_instance_method(method, :remove_new_method) { self.remove_called = true }
method.unstub
assert method.remove_called
end
def test_should_call_mock_unstub
klass = class_with_method(:method_x)
method = AnyInstanceMethod.new(klass, :method_x)
replace_instance_method(method, :remove_new_method) {}
mocha = Class.new do
class << self
attr_accessor :unstub_method
end
def self.unstub(method)
self.unstub_method = method
end
end
define_instance_method(mocha, :any_expectations?) { true }
replace_instance_method(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
define_instance_method(any_instance, :mocha) { mocha }
stubbee = class_with_method(:method_x)
define_instance_method(stubbee, :any_instance) { any_instance }
method = AnyInstanceMethod.new(stubbee, :method_name)
assert_equal stubbee.any_instance.mocha, method.mock
end
private
def build_mock
counter = SimpleCounter.new
Mock.new(Mockery.new(counter), counter)
end
end
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