111 lines
4.5 KiB
Plaintext
111 lines
4.5 KiB
Plaintext
README FOR IDLE TESTS IN IDLELIB.IDLE_TEST
|
|
|
|
|
|
1. Test Files
|
|
|
|
The idle directory, idlelib, has over 60 xyz.py files. The idle_test
|
|
subdirectory should contain a test_xyy.py for each. (For test modules, make
|
|
'xyz' lower case, and possibly shorten it.) Each file should start with the
|
|
something like the following template, with the blanks after after '.' and 'as',
|
|
and before and after '_' filled in.
|
|
---
|
|
import unittest
|
|
from test.support import requires
|
|
import idlelib. as
|
|
|
|
class _Test(unittest.TestCase):
|
|
|
|
def test_(self):
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(verbosity=2, exit=2)
|
|
---
|
|
Idle tests are run with unittest; do not use regrtest's test_main.
|
|
|
|
Once test_xyy is written, the following should go at the end of xyy.py,
|
|
with xyz (lowercased) added after 'test_'.
|
|
---
|
|
if __name__ == "__main__":
|
|
from test import support; support.use_resources = ['gui']
|
|
import unittest
|
|
unittest.main('idlelib.idle_test.test_', verbosity=2, exit=False)
|
|
---
|
|
|
|
|
|
2. Gui Tests
|
|
|
|
Gui tests need 'requires' and 'use_resources' from test.support
|
|
(test.test_support in 2.7). A test is a gui test if it creates a Tk root or
|
|
master object either directly or indirectly by instantiating a tkinter or
|
|
idle class. For the benefit of buildbot machines that do not have a graphics
|
|
screen, gui tests must be 'guarded' by "requires('gui')" in a setUp
|
|
function or method. This will typically be setUpClass.
|
|
|
|
To avoid interfering with other gui tests, all gui objects must be destroyed
|
|
and deleted by the end of the test. If a widget, such as a Tk root, is created
|
|
in a setUpX function, destroy it in the corresponding tearDownX. For module
|
|
and class attributes, also delete the widget.
|
|
---
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
requires('gui')
|
|
cls.root = tk.Tk()
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
cls.root.destroy()
|
|
del cls.root
|
|
---
|
|
|
|
Support.requires('gui') returns true if it is either called in a main module
|
|
(which never happens on buildbots) or if use_resources contains 'gui'.
|
|
Use_resources is set by test.regrtest but not by unittest. So when running
|
|
tests in another module with unittest, we set it ourselves, as in the xyz.py
|
|
template above.
|
|
|
|
Since non-gui tests always run, but gui tests only sometimes, tests of non-gui
|
|
operations should best avoid needing a gui. Methods that make incidental use of
|
|
tkinter (tk) variables and messageboxes can do this by using the mock classes in
|
|
idle_test/mock_tk.py. There is also a mock text that will handle some uses of the
|
|
tk Text widget.
|
|
|
|
|
|
3. Running Tests
|
|
|
|
Assume that xyz.py and test_xyz.py end with the "if __name__" statements given
|
|
above. In Idle, pressing F5 in an editor window with either loaded will run all
|
|
tests in the test_xyz file with the version of Python running Idle. The test
|
|
report and any tracebacks will appear in the Shell window. The options in these
|
|
"if __name__" statements are appropriate for developers running (as opposed to
|
|
importing) either of the files during development: verbosity=2 lists all test
|
|
methods in the file; exit=False avoids a spurious sys.exit traceback that would
|
|
otherwise occur when running in Idle. The following command lines also run
|
|
all test methods, including gui tests, in test_xyz.py. (The exceptions are that
|
|
idlelib and idlelib.idle start Idle and idlelib.PyShell should (issue 18330).)
|
|
|
|
python -m idlelib.xyz # With the capitalization of the xyz module
|
|
python -m idlelib.idle_test.test_xyz
|
|
|
|
To run all idle_test/test_*.py tests, either interactively
|
|
('>>>', with unittest imported) or from a command line, use one of the
|
|
following. (Notes: unittest does not run gui tests; in 2.7, 'test ' (with the
|
|
space) is 'test.regrtest '; where present, -v and -ugui can be omitted.)
|
|
|
|
>>> unittest.main('idlelib.idle_test', verbosity=2, exit=False)
|
|
python -m unittest -v idlelib.idle_test
|
|
python -m test -v -ugui test_idle
|
|
python -m test.test_idle
|
|
|
|
The idle tests are 'discovered' by idlelib.idle_test.__init__.load_tests,
|
|
which is also imported into test.test_idle. Normally, neither file should be
|
|
changed when working on individual test modules. The third command runs runs
|
|
unittest indirectly through regrtest. The same happens when the entire test
|
|
suite is run with 'python -m test'. So that command must work for buildbots
|
|
to stay green. Idle tests must not disturb the environment in a way that
|
|
makes other tests fail (issue 18081).
|
|
|
|
To run an individual Testcase or test method, extend the dotted name given to
|
|
unittest on the command line. (But gui tests will not this way.)
|
|
|
|
python -m unittest -v idlelib.idle_test.test_xyz.Test_case.test_meth
|