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https://github.com/zverok/dokaz

Use your documentation as a specification: parse and evaluate ruby code from markdown
https://github.com/zverok/dokaz

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Use your documentation as a specification: parse and evaluate ruby code from markdown

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# Dokaz

Dokaz (До́каз) means "proof" in Ukrainian.

**Dokaz** gem allows you to check all code inside your documentation, and
see what it outputs.

It just finds all pieces of

```ruby
-marked code in your .md
files, tries to run it and shows you the consequences.

## Install

Just as usual -- by adding `gem 'dokaz'` to your Gemfile then running
`bundle install`.

Or `[sudo] gem install dokaz`

## Usage

```
dokaz --help

Usage: dokaz [patterns] [options]

Patterns:
File.md one file
File.md:15 only block around line 15
folder/*.md all files in folder

Options:
-r, --require Additional files to require, comma-separated
-f, --format Output format ("spec" or "show[case]")
--help Shows this message
```

Dokaz respects `.dokaz` file in local folder, which should be just its
options, each on newline.

## Output formats

* "spec" -- simple "does it work?" check:

--format spec

* "showcase" or just "show" -- pretty copy-pasteable output of what
sample code returns and prints:

--format showcase

You can just insert it back into your docs.

## Using it for your project's README

* Add to project's Gemfile (preferably to `:dev` group) `gem 'dokaz'`
* Create file for example `spec/dokaz_helpers.rb`, containing all
initialization code to include your project files
* Create file `.dokaz`, containing:
```
README.md
--require ./spec/dokaz_helpers.rb
```
* Run `bundle exec dokaz`

## Using it for your project's GitHub wiki

* Do the same as above
* Clone your project's wiki to some directory (outside your project's directory!):
`git clone git:github.com/myusername/myproject.wiki.git`
* At your project's directory, run `bundle exec dokaz /path/to/cloned/wiki/*.md`

## Known issues

* ridiculously simple, naïve and not tested; though, works for me;
* all code from all blocks is evaluated in same context (so, if block
from one documentation file defines some class or variable, it is
visible to all other blocks). Typically, it is reasonable behaviour,
yet can produce unwanted effects when your docs demonstrate some
metaprogramming or do some serious side-effects.

## License

MIT