[New-bugs-announce] [issue34375] Subtests (unittest)
Victor Porton
report at bugs.python.org
Fri Aug 10 13:56:26 EDT 2018
New submission from Victor Porton <porton at narod.ru>:
The following is a fragment of a real code:
~~~
def test_run_xinlude(self):
# stub_stdin(self, Global.get_resource_bytes("tests/core/data/xml/xinclude.xml"))
for next_script_mode in ['doc1', 'doc2']:
for order in ['breadth', 'depth']:
with capture_stdin_and_stdout():
command_line.main(['-r',
order,
'chain',
Global.get_filename("tests/core/data/xml/xinclude.xml"),
'-u',
'http://portonvictor.org/ns/trans/precedence-include',
'-s',
next_script_mode])
self.assertEqual(sys.stdout.buffer.getvalue(), TestUtility.XInclude_output,
"for next_script=%s, order=%s" % (next_script_mode, order))
~~~
I wrote it in one test method instead of four similar methods.
It has the deficiency that if the first test fails, the three remaining tests are skipped.
I propose to add `subtest` context manager to use it like:
~~~
with subtest():
with capture_stdin_and_stdout():
command_line.main(['-r',
order,
'chain',
Global.get_filename("tests/core/data/xml/xinclude.xml"),
'-u',
'http://portonvictor.org/ns/trans/precedence-include',
'-s',
next_script_mode])
self.assertEqual(sys.stdout.buffer.getvalue(), TestUtility.XInclude_output,
"for next_script=%s, order=%s" % (next_script_mode, order))
~~~
which would split our test into four independent tests.
----------
components: Library (Lib)
messages: 323375
nosy: porton
priority: normal
severity: normal
status: open
title: Subtests (unittest)
type: enhancement
versions: Python 3.7
_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34375>
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