如何在 ActiveSupport::TestCase 中存根方法
How to stub a method in ActiveSupport::TestCase
在 RSpec
中,我可以像这样存根方法:
allow(company).to receive(:foo){300}
如何使用 ActiveSupport::TestCase
存根方法?
我有这样的测试。
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
#company.stubs(:foo).returns(300)
assert_nil(company.calculate_bar)
end
end
Minitest 的模拟功能有限,但我建议对这些类型的存根使用 mocha gem。
Mocha 的语法正是您在注释掉的行中的语法:
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
company.stubs(:foo).returns(300)
assert_nil(company.calculate_bar)
end
end
Minitest 附带一个开箱即用的 stub
方法,以防您不想使用外部工具:
require 'minitest/mock'
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
Company.stub :foo, 300 do
assert_nil(company.calculate_bar)
end
end
end
增强@Farrukh 的回答:
如果你想验证传递的参数,比如allow(company).to receive(:foo).with(some_args).and_return(300)
,
您可以使用 assert_called_with
.
# requiring may not be needed, depending on ActiveSupport version
require "active_support/testing/method_call_assertions.rb"
include ActiveSupport::Testing::MethodCallAssertions # so we can use `assert_called_with`
assert_called_with(company, :foo, some_args, returns: 300) do
assert_nil(company.calculate_bar)
end
在 RSpec
中,我可以像这样存根方法:
allow(company).to receive(:foo){300}
如何使用 ActiveSupport::TestCase
存根方法?
我有这样的测试。
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
#company.stubs(:foo).returns(300)
assert_nil(company.calculate_bar)
end
end
Minitest 的模拟功能有限,但我建议对这些类型的存根使用 mocha gem。
Mocha 的语法正是您在注释掉的行中的语法:
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
company.stubs(:foo).returns(300)
assert_nil(company.calculate_bar)
end
end
Minitest 附带一个开箱即用的 stub
方法,以防您不想使用外部工具:
require 'minitest/mock'
class CompanyTest < ActiveSupport::TestCase
test 'foobar' do
company = companies(:base)
Company.stub :foo, 300 do
assert_nil(company.calculate_bar)
end
end
end
增强@Farrukh 的回答:
如果你想验证传递的参数,比如allow(company).to receive(:foo).with(some_args).and_return(300)
,
您可以使用 assert_called_with
.
# requiring may not be needed, depending on ActiveSupport version
require "active_support/testing/method_call_assertions.rb"
include ActiveSupport::Testing::MethodCallAssertions # so we can use `assert_called_with`
assert_called_with(company, :foo, some_args, returns: 300) do
assert_nil(company.calculate_bar)
end