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This is the shellmock project, a mocking framework for shell scripts. It works well with the bats-core testing framework. You can find our documentation below. Inspiration for shellmock was taken from testing frameworks such as pytest and golang/mock.

To get started, just head over to the releases and download the latest release. Then, you can write your bats-core-based tests. Just make sure to use load shellmock in your setup function. See below for shellmock's documentation.

The following tools are needed to use shellmock:

• base32
• bash (at least version 4.4)
• cat
• chmod
• mkdir
• mktemp
• rm

On Debian-based systems, they can be installed via:

sudo apt install -yqq bash coreutils

You also need the bats-core testing framework that can be installed via npm following its docs. We recommend an installation via npm instead of an installation via apt. The reason is that many system packages provide comparatively old versions while the version installable via npm is up to date.

To run the commands command, you also need a Golang toolchain. For optimal performance, install flock, which is contained within the util-linux package on Debian-based systems.

• Usage documentation:
  • Quickstart guide: Read this page if this is your first time using shellmock and you want to get started.
  • How to: Read this page if you want to know how to go about creating your tests with shellmock in general.
  • Detailed example: Read this page if you want to see how shellmock can be used to create extensive tests of a script of medium complexity.
  • Command reference: Read this page if you want to know about all of shellmock's features or have questions about a specific command.
  • shellmock's own tests: Read this code if you want see how shellmock itself is being tested using bats-core. Those tests also showcase shellmock's features. This is a non-exhaustive list of examples you can find in the tests:
    • Mock an executable
    • Mock a function
    • Mock with non-zero exit code
    • Match positional arguments, both with fixed and flexible positions
    • Create a mock that is writing a fixed string to stdout
    • Fail a test by killing the parent process when there is an unexpected call
• Technical documentation:
  • Building shellmock: Read this page if you want to know how to generate the release artefacts.

Like what we did? Great, we’d love to hear that. Don’t like it? Not so great! But we are eager to hear your feedback on how we could improve!

'Torsten Long'

Shellmock is open-sourced under the Apache-2.0 license. See the LICENSE file for details.

Copyright (c) 2022 - for information on the respective copyright owner see the NOTICE file or the repository https://github.com/boschresearch/shellmock

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.