https://github.com/vaab/docshtest
Shell Doctest
https://github.com/vaab/docshtest
Last synced: about 1 month ago
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Shell Doctest
- Host: GitHub
- URL: https://github.com/vaab/docshtest
- Owner: vaab
- License: bsd-2-clause
- Created: 2019-02-11T18:23:17.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2020-12-14T20:12:16.000Z (over 4 years ago)
- Last Synced: 2025-02-06T08:27:12.613Z (3 months ago)
- Language: Python
- Size: 22.5 KB
- Stars: 3
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.rst
- License: LICENSE
Awesome Lists containing this project
README
=========
docshtest
=========
.. image:: https://img.shields.io/pypi/v/docshtest.svg
:target: https://pypi.python.org/pypi/docshtest
.. image:: https://img.shields.io/travis/vaab/docshtest/master.svg?style=flat
:target: https://travis-ci.org/vaab/docshtest/
:alt: Travis CI build status
.. image:: https://img.shields.io/appveyor/ci/vaab/docshtest.svg
:target: https://ci.appveyor.com/project/vaab/docshtest/branch/master
:alt: Appveyor CI build status
.. image:: http://img.shields.io/codecov/c/github/vaab/docshtest.svg?style=flat
:target: https://codecov.io/gh/vaab/docshtest/
:alt: Test coverage
Doctest for Shell - Quick, Slim and Dirty
Feature
=======
- Quick way to write doctest in shell
- Works on Windows, Linux, Python 2.7, Python 3.5+
- Slim because it has no dependencies to other project, one file, in python
- Doctest feeling
- You can mix python tests ans shell tests
- only checks standard output (although, you can tailor your test
commands to output what is meaningful to standard output.)
Current Status
==============
This is an early alpha code.
Major concerns and shortcomings:
- end of blocks and final ``\n`` are not tested correctly
- tests execution in current directory with possible consequences.
- no support of checking error level
- no support of proper mixed standard error and standard output content
- limited to ``bash`` testing (needs ``bash -n`` equivalent)
- rough detection of ``doctests`` command blocks is relying on ``bash
-n`` error output. Not sure this is very solid.
Minor concerns, but would be better without:
- fail on first error hard-written.
- hard-written support of ````
Possible evolution:
- profiling
- support of python file (by extracting docs before)
- integration in nosetests ? is it possible ?
- colorize output ?
- coverage integration ?
Installation
============
You don't need to download the GIT version of the code as ``docshtest`` is
available on the PyPI. So you should be able to run::
pip install docshtest
If you have downloaded the GIT sources, then you could add install
the current version via traditional::
python setup.py install
And if you don't have the GIT sources but would like to get the latest
master or branch from github, you could also::
pip install git+https://github.com/vaab/docshtest
Or even select a specific revision (branch/tag/commit)::
pip install git+https://github.com/vaab/docshtest@master
Usage
=====
QuickStart
----------
``docshtest`` is a ``doctest`` for shell command. This means it allows
you to integrate in your documentation some examples of shell code and
their expected output that will be actually verifiable.
First please notice that these documentation lines you are reading are
stored in a ``README.rst`` file that will contain very soon some
examples of how to run ``docshtest`` and what outcome to expect.
The very first example that comes to mind is to run ``docshtest`` on
this very documentation::
docshtest README.rst
You can check that yourself, and that's done in the CI procedures.
Let's introduce you the basics of writing your own testable
documentation...
So this is how it works::
$ cat <<'EOF' > mydoc.rst ## First test file
This is standard RST, we can include runnable test blocks::
$ echo 'hello world'
hello world
EOF
Note that indentation is required, as well as the ``"$ "`` (dollar sign
followed by a space) before the command to be executed. Please refer
to the following section to understand how ``docshtest`` figures out
the end of your shell code and the start of the output.
The output starts after the end of your command, indented also, and
will be matched with the actual command output. If there is a mismatch
the test will fail, and ``docshtest`` will cancel any remaining tests.
If it matches, next test block will be executed.
To run our test::
$ ./docshtest mydoc.rst
#0001 - success (line 4)
Multiline Commands
------------------
Multiline commands are detected with a very simple, but dirty method,
``docshtest`` will simply provide the exact code, starting with only
the first line to the shell interpreter, if the shell interpreter
complains, it'll try again by adding the next line to the output.
This allows to document/test multi-line shell codes like::
$ cat < mydoc.rst ## First test file
Multiline commands::
$ for a in \$(seq 1 3); do
echo "foo\$a"
done
foo1
foo2
foo3
EOF
$ ./docshtest mydoc.rst
#0001 - success (lines 4-6)
Please note that the extra indentation for the body of the ``for`` loop or
the ``done`` is unnecessary, but is recommended for reading::
$ cat < mydoc.rst ## First test file
Multiline commands::
$ for a in \$(seq 1 3); do
echo "foo\$a"
done
foo1
foo2
foo3
EOF
$ ./docshtest mydoc.rst
#0001 - success (lines 4-6)
Failing test will display both expected output and current output::
$ cat < mydoc.rst ## First test file
Multiline commands::
$ for a in \$(seq 1 3); do
echo "foo\$a"
done
foo1
foo4
foo3
EOF
$ ./docshtest mydoc.rst
#0001 - failure (lines 4-6):
command:
| for a in $(seq 1 3); do
| echo "foo$a"
| done
expected:
| foo1
| foo4
| foo3
|
output:
| foo1
| foo2
| foo3
|
But note that if these outputs are bigger, a standard unified diff will be
printed::
$ cat < mydoc.rst ## First test file
Multiline commands::
$ for a in \$(seq 1 6); do
echo "foo\$a"
done
foo1
foo3
foo4
foo5
foo6
EOF
$ ./docshtest mydoc.rst
#0001 - failure (lines 4-6):
command:
| for a in $(seq 1 6); do
| echo "foo$a"
| done
expected:
| foo1
| foo3
| foo4
| foo5
| foo6
|
output:
| foo1
| foo2
| foo3
| foo4
| foo5
| foo6
|
diff:
--- expected
+++ output
@@ -1,4 +1,5 @@
foo1
+foo2
foo3
foo4
foo5
Tinkering all executed code
---------------------------
You can transform all executed code before execution thanks to
``--regex REGEX`` (or ``-r REGEX``) option::
$ cat <<'EOF' > mydoc.rst ## First test file
Our tested command is 'foo'
$ foo 'hello world'
hello world
EOF
$ ./docshtest -r '#\bfoo\b#echo#' mydoc.rst
#0001 - success (line 4)
Conditional Tests
-----------------
You might want to have conditional tests, that are triggered only
on if specific test succeeds. This feature uses ``meta`` commands
that are specified as shell comments in the given block::
$ cat <<'EOF' > mydoc.rst
Our tested command is 'foo'
$ echo $ENVVAR ## docshtest: if-success-set VAR_WAS_SET
0
$ echo 'var is set' ## docshtest: ignore-if VAR_WAS_SET
SHOULDFAIL
$ echo 'var is not set' ## docshtest: ignore-if-not VAR_WAS_SET
SHOULDFAIL
EOF
$ ENVVAR=0 ./docshtest mydoc.rst
#0001 - ignored (line 4): if-success-set VAR_WAS_SET
#0002 - ignored (line 6): ignore-if VAR_WAS_SET
#0003 - failure (line 8):
command:
| echo 'var is not set' ## docshtest: ignore-if-not VAR_WAS_SET
expected:
| SHOULDFAIL
|
output:
| var is not set
|
Encoding
--------
``docshtest`` will assume everything is "UTF-8"::
$ cat <<'EOF' > mydoc.rst
Our tested command is 'foo'
$ echo "éà"
éà
$ echo "é"
e
EOF
$ ./docshtest mydoc.rst
#0001 - success (line 4)
#0002 - failure (line 6):
command:
| echo "é"
expected:
| e
|
output:
| é
|
Command line
------------
``docshtest`` supports the common GNU standard ``--help`` options::
$ ./docshtest --help
docshtest - parse file and run shell doctests
Usage:
docshtest (-h|--help)
docshtest [[-r|--regex REGEX] ...] DOCSHTEST_FILE
Options:
-r REGEX, --regex REGEX
Will apply this regex to the lines to be executed. You
can have more than one patterns by re-using this options
as many times as wanted. Regexps will be applied one by one
in the same order than they are provided on the command line.
Examples:
## run tests but replace executable on-the-fly for coverage support
docshtest README.rst -r '/\bdocshtest\b/coverage run docshtest.py/'
First argument is necessary::
$ ./docshtest
Error: please provide a rst filename as argument. (use '--help' option to get usage info)
And of course it should be the path of a file::
$ ./docshtest notexistent
Error: file 'notexistent' not found.
Contributing
============
Any suggestion or issue is welcome. Push request are very welcome,
please check out the guidelines.
Push Request Guidelines
-----------------------
You can send any code. I'll look at it and will integrate it myself in
the code base and leave you as the author. This process can take time and
it'll take less time if you follow the following guidelines:
- Try to stick to 80 columns wide.
- separate your commits per smallest concern.
- each commit should pass the tests (to allow easy bisect)
- each functionality/bugfix commit should contain the code, tests,
and doc.
- prior minor commit with typographic or code cosmetic changes are
very welcome. These should be tagged in their commit summary with
``!minor``.
- the commit message should follow gitchangelog rules (check the git
log to get examples)
- if the commit fixes an issue or finished the implementation of a
feature, please mention it in the summary.
If you have some questions about guidelines which is not answered here,
please check the current ``git log``, you might find previous commit that
would show you how to deal with your issue.
License
=======
Copyright (c) 2012-2020 Valentin Lab.
Licensed under the `BSD License`_.
.. _BSD License: http://raw.github.com/0k/sunit/master/LICENSE