To better follow conventional pytest style, this removes the outer
wrapper class in favor of a function for some tests. These tests were
picked as they are relatively simple and presented no barriers to a
quick port. The assert* methods are replaced with assert statements.
When necessary, a fixture is used to create a temporary directory.
This commit does not convert the entire test suite to this style as some
test classes use methods or other advanced features that are difficult
to automatically convert. The goal is to address these issues in
followup commits.
Refs #4193
Similar to the recent adoption of Black. isort is a Python utility to
sort imports alphabetically and automatically separate into sections. By
using isort, contributors can quickly and automatically conform to the
projects style without thinking. Just let the tool do it.
Uses the configuration recommended by the Black to avoid conflicts of
style.
Rewrite TestImageQt.test_deprecated to no rely on import order.
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
The `py36` flag now uses a tuple comparison to correctly handle future
major version. The unit test file also now uses `py36` as exported by
the _util module, rather than re-testing `sys.version_info`.
Now, for functions which accept either a path or file object, the
predicate will pass on Paths and not attempt to call .read on them
before opening.
The pathlib module was added in 3.4 but os.path functions did not start
accepting path-like objects until 3.6, so that is the version after
which this implementation is defined.
Added a unit test to make sure isPath accepts Path objects. The unit
test is skipped if python version is not 3.6 or later.
The previous test configuration made it difficult to run a single test
with the pytest CLI. There were two major issues:
- The Tests directory was not a package. It now includes a __init__.py
file and imports from other tests modules are done with relative
imports.
- setup.cfg always specified the Tests directory. So even if a specific
test were specified as a CLI arg, this configuration would also always
include all tests. This configuration has been removed to allow
specifying a single test on the command line.
Contributors can now run specific tests with a single command such as:
$ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb
This makes it easy and faster to iterate on a single test failure and is
very familiar to those that have previously used tox and pytest.
When running tox or pytest with no arguments, they still discover and
runs all tests in the Tests directory.
