Test module: general_classes_and_functions.py

tests.general_classes.py

A module containing tests for the general_classes module I’m using in general_classes.py. These tests use the standard unittest package and extend the unittest.TestCase class.

module_version:1.0 created_on:2013-11-26

General classes and function tests

class tests.general_classes_and_functions.TestGeneralClasses(methodName='runTest')

Test the classes defined in general_classes.py.

Each function is tested with existing and non-existent instances of the variable type that it is designed for. We also test that providing non- string basic python objects produces string representations and doesn’t case a failure.

setUp()

Initialize the framework for testing.

Define and create a new system temporary directory with the tempfile package for use as an existing directory. A range of wig files with different parameters are created in this directory to test the routines with.

test_generic_set_region()

test region setter generic_set_region

Test object	Expectation
no args/first arg not string	raise TypeError
poorly formatted string	raise ValueError
second & third args not int	raise TypeError
just chr id	sets selector key but not start/stop i.e., select whole chromosome
valid string representation	correct selector setting
valid triple arg	correct selector setting

test_openfile()

tests the openfile function raises sensible errors/data

Test object	Expectation
filename is not a string	TypeError
file doesn’t exist	IOError
correctly reads test files	Correct file-data

test_region()

test the region class contructor raises sensible errors

Test object	Expectation
first and second args not string	raise TypeError
third and fouth args not int	raise TypeError
strand and desc not string	raise TypeError
seq not string or Seq	raise TypeError
seqType not string	raise TypeError