Aws.config[:autoscaling] = { stub_responses: { describe_launch_configurations: { launch_configurations: [ launch_configuration_name: 'my-lc', launch_configuration_arn: 'arn:aws:autoscaling:ap-northeast-1:123456789012:launchConfiguration:\ 1a11111b-22f2-3e33-444-55cf55e55555:launchConfigurationName/my-lc', image_id: 'ami-abc12def', key_name: 'my_key_pair', security_groups: ['sg-1a2b3cd4'], classic_link_vpc_id: nil, classic_link_vpc_security_groups: [], user_data: '', instance_type: 'c3.large', kernel_id: '', ramdisk_id: '', block_device_mappings: [], instance_monitoring: { enabled: true }, spot_price: nil, iam_instance_profile: nil, created_time: Time.local(2015), ebs_optimized: false, associate_public_ip_address: true, placement_tenancy: nil ], next_token: nil } } } Aws.config[:ec2] = { stub_responses: { describe_security_groups: { security_groups: [ { group_id: 'sg-1a2b3cd4', group_name: 'my-security-group-name', tags: [ { key: 'Name', value: 'my-security-group-tag-name' } ] } ] } } }