slsDetectorPackage/python/sphinx/code_quality.rst

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Code quality
=============================
For usability and reliability of the software the code needs to be high quality. For this
project it means meeting the four criteria described below. Any addition should pass all of
them.
--------------------------------
Look, read and feel like Python
--------------------------------
When using classes and functions from the
package it should feel like you are using Python tools and be forces
to write C++ style code with Python syntax.
::
with xray_box.shutter_open():
for th in threshold:
d.vthreshold = th
d.acq()
should be preferred over
::
N = len(threshold)
xray_box.open_shutter()
for i in range(N):
d.dacs.set_dac('vthreshold', threshold[i])
d.acq()
xray_box.close_shutter()
even if the difference might seem small.
--------------------
Have documentation
--------------------
Classes and functions should be documented with doc-strings
in the source code. Preferably with examples. The syntax to be used
is numpy-sphinx.
::
def function(arg):
"""
This is a function that does something
Parameters
----------
arg: int
An argument
Returns
--------
value: double
Returns a value
"""
return np.sin(arg+np.pi)
---------------------------------
Pass static analysis with pylint
---------------------------------
Yes, anything less than 9/10 just means that you are lazy. If
there is a good reason why to diverge, then we can always
add an exception.
Currently the following additions are made:
* good-names: x, y, ax, im etc.
* function arguments 10
* Whitelist: numpy, _sls
-----------------------
Tested code
-----------------------
Last but not least... *actually last just because of the long list included.*
All code that goes in should have adequate tests. If a new function does not
have a minimum of one test it does not get added.
**Unit-tests with pytest and mocker**
::
----------- coverage: platform linux, python 3.6.4-final-0 -----------
Name Stmts Miss Cover
------------------------------------------------
sls_detector/__init__.py 4 0 100%
sls_detector/decorators.py 14 3 79%
sls_detector/detector.py 461 115 75%
sls_detector/eiger.py 150 64 57%
sls_detector/errors.py 7 0 100%
sls_detector/jungfrau.py 59 26 56%
------------------------------------------------
TOTAL 695 208 70%
========= 78 passed in 0.60 seconds =========
**Simple integration tests**
These tests require a detector connected. Performs simple tasks like setting
exposure time and reading back to double check the value
::
----------- coverage: platform linux, python 3.6.4-final-0 -----------
Name Stmts Miss Cover
------------------------------------------------
sls_detector/__init__.py 4 0 100%
sls_detector/decorators.py 14 0 100%
sls_detector/detector.py 461 103 78%
sls_detector/eiger.py 150 20 87%
sls_detector/errors.py 7 0 100%
sls_detector/jungfrau.py 59 26 56%
------------------------------------------------
TOTAL 695 149 79%
========= 67 passed, 1 skipped in 16.66 seconds =========
**Complex integration test**
Typical measurements. Might require X-rays. Tests are usually evaluated from
plots