Version 107 (modified by Mike A, 12 years ago) ( diff )

highlight the value of testing in Sahana


"A bug is a test case you haven't written yet"
"Unit Tests allow merciless refactoring"

As it is a disaster management tool, bugs in Sahana that lead to aid/rescue workers in the field receiving incorrect or incomplete information could potentially lead to disaster victims losing their lives. Therefore, Sahana developers need to place more emphasis than usual on testing.

This page defines what our current approach versus our BluePrint for future options

Test-Driven Development is a programming styles which says that you 1st write your test cases (from the specs) & then proceed to make them pass.

For manual tests, can pre-populate the database with random data using gluon.contrib.populate

Functional Tests

Building the Right Code

We have integrated into /static/selenium so that Functional Tests can be run easily. For Notes on how to create your own test cases see CreatingTestCasesFirst.

Tests can be developed using Selenium IDE, if desired.

See the Documentation for details on how to use this test suite.


  • Some wrapper scripts for Win32 attached
  • Improving the stability of Selenium tests:
  • Lots of useful tips:
  • Autocomplete is fiddly to test as need to trigger specific events:
    # Enter the search String
    sel.type("gis_location_autocomplete", "SearchString")
    # Trigger the event to get the AJAX to send
    sel.fire_event("gis_location_autocomplete", "keydown")
    # Wait for the popup menu
    for i in range(60):
            if "SearchString" == sel.get_text("css=ul.ui-autocomplete li:first-child a"):
    else:"time out")
    # Select the Result
    sel.fire_event("css=ul.ui-autocomplete li:first-child a", "mouseover")"css=ul.ui-autocomplete li:first-child a")

Systers' approach:

Alternative Options:

Unit Tests

Building the Code Right

Selenium RC is great due to ability to handle JavaScript & also due to having an IDE for generating them (export as Python).
The IDE output needs to be modified to work with Web2Py.
NB Custom functions (e.g. for Random) cannot be shared with the Functional Tests (custom=JS) but the rest of the tests can be.
These tests are stored in /tests.
ToDo: Port the storeRandom function from JS to Python:

import random
print "test_%i@xxxxxxxx" % random.randint(1, 10000)

CherryPy's WebTest is good for in-process testing & can be run from a browser-less server(easier for CI-integration).
These tests are stored in /tests/webtest.
NB These are a work-in-progress...need to enable access to Web2Py environment (db, etc) using:

from import exec_environment

Or could write as a 'Controller' & call from CLI:

python -S appname -M -R 

Another similar option could be Pylon's WebTest

Doc Tests

Agile documentation which can be run using Web2Py's Admin UI.

To extend these to web applications, we have a module which uses wsgi_intercept & CherryPy's WebTest: modules/s3/
This can be used from Controllers like:

def login():
    """ Login
    >>> from applications.sahana.modules.s3.s3test import WSGI_Test
    >>> test=WSGI_Test(db)
    >>> '200 OK' in test.getPage('/sahana/%s/login' % module)
    >>> test.assertHeader("Content-Type", "text/html")
    >>> test.assertInBody('Login')

This works fine,although if an assert fails then the UI gets stuck :/
The 'db' access part isn't yet working.

Note that Web2Py uses a big doctest at the end of each file: def test_all()

Continuous Integration

We are starting to use Jenkins to run the Functional Tests automatically.

Other options:



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