doctest: normalize b'', u'' and exception output on Python 3
The idea is described in the following page.
https://dirkjan.ochtman.nl/writing/2014/07/06/single-source-python-23-doctests.html
# no-check-commit
--- a/tests/test-doctest.py Sun Sep 03 17:33:10 2017 +0900
+++ b/tests/test-doctest.py Thu Aug 24 22:33:28 2017 +0900
@@ -4,6 +4,7 @@
import doctest
import os
+import re
import sys
ispy3 = (sys.version_info[0] >= 3)
@@ -11,6 +12,18 @@
if 'TERM' in os.environ:
del os.environ['TERM']
+class py3docchecker(doctest.OutputChecker):
+ def check_output(self, want, got, optionflags):
+ want2 = re.sub(r'''\bu(['"])(.*?)\1''', r'\1\2\1', want) # py2: u''
+ got2 = re.sub(r'''\bb(['"])(.*?)\1''', r'\1\2\1', got) # py3: b''
+ # py3: <exc.name>: b'<msg>' -> <name>: <msg>
+ # <exc.name>: <others> -> <name>: <others>
+ got2 = re.sub(r'''^mercurial\.\w+\.(\w+): (['"])(.*?)\2''', r'\1: \3',
+ got2, re.MULTILINE)
+ got2 = re.sub(r'^mercurial\.\w+\.(\w+): ', r'\1: ', got2, re.MULTILINE)
+ return any(doctest.OutputChecker.check_output(self, w, g, optionflags)
+ for w, g in [(want, got), (want2, got2)])
+
# TODO: migrate doctests to py3 and enable them on both versions
def testmod(name, optionflags=0, testtarget=None, py2=True, py3=False):
if not (not ispy3 and py2 or ispy3 and py3):
@@ -19,7 +32,16 @@
mod = sys.modules[name]
if testtarget is not None:
mod = getattr(mod, testtarget)
- doctest.testmod(mod, optionflags=optionflags)
+
+ # minimal copy of doctest.testmod()
+ finder = doctest.DocTestFinder()
+ checker = None
+ if ispy3:
+ checker = py3docchecker()
+ runner = doctest.DocTestRunner(checker=checker, optionflags=optionflags)
+ for test in finder.find(mod, name):
+ runner.run(test)
+ runner.summarize()
testmod('mercurial.changegroup')
testmod('mercurial.changelog')