nose2 will look in each directory under the starting directory, unless the configuration modifies the included paths. Within directories and within any Python packages found in the starting directory and any source directories in the starting directory, nose2 will discover test modules and load tests from them. “Test modules” means any modules whose names start with “test”. See the Configuration section for ways to modify searching for tests.
Directories nose2 will look in:
- Directory that contains an
__init__.pyfile (a Python package)
- Directory name that contains “test” after being lowercased.
- Directory name that is either
Each of the following test files will be run:
test.py test_views.py test_models.py testThingy.py
These files will not be run:
not_a_test.py myapp_test.py some_test_file.py
Within test modules, nose2 will load tests from
unittest.TestCase subclasses, and from test functions
(functions whose names begin with “test”).
In the simplest case, go to the directory that includes your project
source and run
This will discover tests in packages and test directories under that directory, load them, and run them, then output something like:
............................................................................. ---------------------------------------------------------------------- Ran 77 tests in 1.897s OK
Directory to start discovery. Defaults to the current working directory. This directory is where nose2 will start looking for tests.
Top-level directory of the project. Defaults to the starting directory. This is the directory containing importable modules and packages, and is always prepended to
sys.pathbefore test discovery begins.
Specifying Tests to Run¶
Pass test names to nose2 on the command line to run individual test modules, classes, or tests.
A test name consists of a python object part and, for generator or
parameterized tests, an argument part. The python object part is a
dotted name, such as
pkg1.tests.test_things.SomeTests.test_ok. The argument
part is separated from the python object part by a colon (”:”) and
specifies the index of the generated test to select, starting from
1. For example,
select the first test generated from the parameterized test
Plugins may provide other means of test selection.
Running Tests with
python setup.py test¶
nose2 supports distribute/setuptools’
python setup.py test
standard for running tests. To use nose2 to run your package’s tests,
add the following to your setup.py:
setup(... test_suite='nose2.collector.collector', ... )
(Not literally. Don’t put the ‘...’ parts in.)
Two warnings about running tests this way.
One: because the setuptools test command is limited, nose2 returns a “test suite” that actually takes over the test running process completely, bypassing the test result and test runner that call it. This may be incompatible with some packages.
Two: because the command line arguments to the test command may not
match up properly with nose2’s arguments, the nose2 instance started
by the collector does not accept any command line arguments. This
means that it always runs all tests, and that you cannot configure
plugins on the command line when running tests this way. As a
workaround, when running under the test command, nose2 will read
setup.cfg if it is present, in addition to
nose2.cfg. This enables you to put
configuration specific to the setuptools test command in
– for instance to activate plugins that you would otherwise activate
via the command line.
to get help for nose2 itself and all loaded plugins.
usage: nose2 [-s START_DIR] [-t TOP_LEVEL_DIRECTORY] [--config [CONFIG]] [--no-user-config] [--no-plugins] [--verbose] [--quiet] [-B] [-D] [--collect-only] [--log-capture] [-P] [-h] [testNames [testNames ...]] positional arguments: testNames optional arguments: -s START_DIR, --start-dir START_DIR Directory to start discovery ('.' default) -t TOP_LEVEL_DIRECTORY, --top-level-directory TOP_LEVEL_DIRECTORY, --project-directory TOP_LEVEL_DIRECTORY Top level directory of project (defaults to start dir) --config [CONFIG], -c [CONFIG] Config files to load, if they exist. ('unittest.cfg' and 'nose2.cfg' in start directory default) --no-user-config Do not load user config files --no-plugins Do not load any plugins. Warning: nose2 does not do anything if no plugins are loaded --verbose, -v --quiet -h, --help Show this help message and exit plugin arguments: Command-line arguments added by plugins: -B, --output-buffer Enable output buffer -D, --debugger Enter pdb on test fail or error --collect-only Collect and output test names, do not run any tests --log-capture Enable log capture -P, --print-hooks Print names of hooks in order of execution