x-Common

Shared metadata for Exercism exercises. The doc/ subdirectory contains all documentation that is not specific to a language track.

Contributing Guide

Please see the contributing guide

Problem metadata

Each problem's data lives in a directory under exercises/

exercises/
├── accumulate
│   ├── description.md
│   └── metadata.yml
├── ...
├── minesweeper
│   ├── canonical-data.json
│   ├── description.md
│   └── metadata.yml
├── ...
└── zipper
    ├── description.md
    └── metadata.yml

There are three metadata files:

description.md - the basic problem description
metadata.yml - additional information about the problem, such as where it came from
canonical-data.json (optional) - standardized test inputs and outputs that can be used to implement the problem

Test Data Format (canonical-data.json)

This data can be incorporated into test programs manually or extracted by a program. The file contains a single JSON object with a key for documentation and keys for various tests that may be meaningful for a problem.

The documentation uses the key "#" with a list of strings as the value. These strings document how the problem readme (description.md) is generally interpreted in test programs across different languages. In addition to a mainstream implementation path, this information can also document significant variations.

Each test case has the the following keys:

description: which will be used to name each generated test
'variable names': one or more variable names with values which will be passed to the solution method
expected: the expected result (this would be -1 when we expect an exception)
msg: a nice message for the failing case

Automated Tests

The only thing that we're testing at the moment, is whether or not canonical-data.json is valid json.

If you want to run this before you commit, you will need to install jq. Then run the script with:

bin/jsonlint

License