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<ol class="breadcrumb"><li>Trace</li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/commands/builtin/echo" title="commands:builtin:echo">The echo builtin command</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/syntax/arith_expr" title="syntax:arith_expr">Arithmetic expressions</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/commands/builtin/let" title="commands:builtin:let">The let builtin command</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/commands/builtin/eval" title="commands:builtin:eval">The eval builtin command</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/dict/terms/directory" title="dict:terms:directory">Directory</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/dict/terms/parameter" title="dict:terms:parameter">Parameter</a></li><li><a href="/web/20220615023812/https://wiki.bash-hackers.org/syntax/pe" title="syntax:pe">Parameter expansion</a></li><li class="active"><a href="/web/20220615023812/https://wiki.bash-hackers.org/howto/dissectabadoneliner" title="howto:dissectabadoneliner">Dissect a bad oneliner</a></li></ol> </div>
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The one of the simplest way to check your bash/sh scripts is run it and check it output or run it and check the result. This tutorial shows how-to use [[https://github.com/pahaz/bashtest|bashtest]] tool for testing your scripts.
==== Write simple util ====
We have a simple **stat.sh** script:
&lt;code&gt;
#!/usr/bin/env bash
if [ -z &quot;$1&quot; ]
then
DIR=./
else
DIR=$1
fi
echo &quot;Evaluate *.py statistics&quot;
FILES=$(find $DIR -name '*.py' | wc -l)
LINES=$((find $DIR -name '*.py' -print0 | xargs -0 cat) | wc -l)
echo &quot;PYTHON FILES: $FILES&quot;
echo &quot;PYTHON LINES: $LINES&quot;
&lt;/code&gt;
This script evaluate the number of python files and the number of python code lines in the files.
We can use it like **./stat.sh &lt;dir&gt;**
==== Create testsuit ====
Then make test suits for **stat.sh**. We make a directory **testsuit** which contain test python files.
**testsuit/main.py**
&lt;code&gt;
import foo
print(foo)
&lt;/code&gt;
**testsuit/foo.py**
&lt;code&gt;
BAR = 1
BUZ = BAR + 2
&lt;/code&gt;
Ok! Our test suit is ready!
We have 2 python files which contains 4 lines of code.
==== Write bashtests ====
Lets write tests. We just write a shell command for testing our work.
Create file **tests.bashtest**:
&lt;code&gt;
$ ./stat.sh testsuit/
Evaluate *.py statistics
PYTHON FILES: 2
PYTHON LINES: 4
&lt;/code&gt;
This is our test! This is simple. Try to run it.
&lt;code&gt;
# install bashtest if required!
$ pip install bashtest
&lt;/code&gt;
&lt;code&gt;
# run tests
$ bashtest *.bashtest
1 items passed all tests:
1 tests in tests.bashtest
1 tests in 1 items.
1 passed and 0 failed.
Test passed.
&lt;/code&gt;
Thats all. We wrote one test. You can write more tests if you want.
&lt;code&gt;
$ ls testsuit/
foo.py main.py
$ ./stat.sh testsuit/
Evaluate *.py statistics
PYTHON FILES: 2
PYTHON LINES: 4
&lt;/code&gt;
And run tests again:
&lt;code&gt;
$ bashtest *.bashtest
1 items passed all tests:
2 tests in tests.bashtest
2 tests in 1 items.
2 passed and 0 failed.
Test passed.
&lt;/code&gt;
You can find more **.bashtest** examples in the [[https://github.com/pahaz/bashtest | bashtest github repo]]. You can also write your question or report a bug [[https://github.com/pahaz/bashtest/issues | here]].
Happy testing!
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<ul class="list-inline"><li><span class="iconify text-muted" data-icon="mdi:file-document-outline"></span> <span title="howto/testing-your-scripts.txt">howto/testing-your-scripts.txt</span></li><li><span class="iconify text-muted" data-icon="mdi:calendar"></span> Last modified: <span title="2016/08/11 05:33">2016/08/11 05:33</span></li><li class="text-muted">by <bdi>pahaz</bdi></li></ul> </span>
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