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import io
import sys
import unittest
import better_exceptions
STREAM = io.BytesIO() if sys.version_info[0] == 2 else io.StringIO()
def add(a, b):
return a + b
class MyTestCase(unittest.TestCase):
def test_add(self):
self.assertEqual(add(1, "2"), 3)
class SilentTestRunner(unittest.TextTestRunner):
"""
The default TextTestRunner will print something like 'Ran 1 test in 0.017s'
into stderr, and values are different from different tests. To ensure that
CI script can compare between the outputs, those information must be muted.
"""
def __init__(self, stream=STREAM, *args, **kwargs):
super(SilentTestRunner, self).__init__(STREAM, *args, **kwargs)
def print_test_error():
test = unittest.main(exit=False, testRunner=SilentTestRunner)
error = test.result.errors[0][1]
# unittest.TestResult.errors is "A list containing 2-tuples of TestCase
# instances and strings holding formatted tracebacks. Each tuple represents
# a test which raised an unexpected exception."
assert isinstance(error, str)
lines = error.splitlines()
print("\n".join(lines[4:])) # remove '/removed/for/test/purposes.py'
def main():
print_test_error()
def patch(self, err, test):
lines = better_exceptions.format_exception(*err)
if sys.version_info[0] == 2:
return u"".join(lines).encode("utf-8")
else:
return u"".join(lines)
unittest.result.TestResult._exc_info_to_string = patch
print_test_error()
if __name__ == "__main__":
main()
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