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Fix Python 2 & 3 compatibility in test_generate_test_code.py

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This commit is contained in:
Mohammad Azim Khan 2018-07-06 00:29:50 +01:00
parent 32cbcdac8f
commit 539aa06f64
1 changed files with 60 additions and 13 deletions
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73
tests/scripts/test_generate_test_code.py
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@ -23,9 +23,19 @@ Unit tests for generate_test_code.py
"""
from StringIO import StringIO
try:
# Python 2
from StringIO import StringIO
except ImportError:
# Python 3
from io import StringIO
from unittest import TestCase, main as unittest_main
from mock import patch
try:
# Python 2
from mock import patch
except ImportError:
# Python 3
from unittest.mock import patch
from generate_test_code import gen_dependencies, gen_dependencies_one_line
from generate_test_code import gen_function_wrapper, gen_dispatch
from generate_test_code import parse_until_pattern, GeneratorInputError
@ -307,9 +317,16 @@ class StringIOWrapper(StringIO, object):
:return: Line read from file.
"""
line = super(StringIOWrapper, self).next()
parent = super(StringIOWrapper, self)
if getattr(parent, 'next', None):
# Python 2
line = parent.next()
else:
# Python 3
line = parent.__next__()
return line
# Python 3
__next__ = next
def readline(self, length=0):
@ -532,6 +549,38 @@ class ParseFunctionCode(TestCase):
Test suite for testing parse_function_code()
"""
def assert_raises_regex(self, exp, regex, func, *args):
"""
Python 2 & 3 portable wrapper of assertRaisesRegex(p)? function.
:param exp: Exception type expected to be raised by cb.
:param regex: Expected exception message
:param func: callable object under test
:param args: variable positional arguments
"""
parent = super(ParseFunctionCode, self)
# Pylint does not appreciate that the super method called
# conditionally can be available in other Python version
# then that of Pylint.
# Workaround is to call the method via getattr.
# Pylint ignores that the method got via getattr is
# conditionally executed. Method has to be a callable.
# Hence, using a dummy callable for getattr default.
dummy = lambda *x: None
# First Python 3 assertRaisesRegex is checked, since Python 2
# assertRaisesRegexp is also available in Python 3 but is
# marked deprecated.
for name in ('assertRaisesRegex', 'assertRaisesRegexp'):
method = getattr(parent, name, dummy)
if method is not dummy:
method(exp, regex, func, *args)
break
else:
raise AttributeError(" 'ParseFunctionCode' object has no attribute"
" 'assertRaisesRegex' or 'assertRaisesRegexp'"
)
def test_no_function(self):
"""
Test no test function found.
@ -544,8 +593,8 @@ function
'''
stream = StringIOWrapper('test_suite_ut.function', data)
err_msg = 'file: test_suite_ut.function - Test functions not found!'
self.assertRaisesRegexp(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
self.assert_raises_regex(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
def test_no_end_case_comment(self):
"""
@ -560,8 +609,8 @@ void test_func()
stream = StringIOWrapper('test_suite_ut.function', data)
err_msg = r'file: test_suite_ut.function - '\
'end case pattern .*? not found!'
self.assertRaisesRegexp(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
self.assert_raises_regex(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
@patch("generate_test_code.parse_function_arguments")
def test_function_called(self,
@ -678,8 +727,8 @@ exit:
data = 'int entropy_threshold( char * a, data_t * h, int result )'
err_msg = 'file: test_suite_ut.function - Test functions not found!'
stream = StringIOWrapper('test_suite_ut.function', data)
self.assertRaisesRegexp(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
self.assert_raises_regex(GeneratorInputError, err_msg,
parse_function_code, stream, [], [])
@patch("generate_test_code.gen_dispatch")
@patch("generate_test_code.gen_dependencies")
@ -1155,8 +1204,7 @@ dhm_do_dhm:10:"93450983094850938450983409623":10:"9345098304850938450983409622"
for _, _, _, _ in parse_test_data(stream):
pass
except GeneratorInputError as err:
pass
self.assertEqual(type(err), GeneratorInputError)
self.assertEqual(type(err), GeneratorInputError)
def test_incomplete_data(self):
"""
@ -1174,8 +1222,7 @@ depends_on:YAHOO
for _, _, _, _ in parse_test_data(stream):
pass
except GeneratorInputError as err:
pass
self.assertEqual(type(err), GeneratorInputError)
self.assertEqual(type(err), GeneratorInputError)
class GenDepCheck(TestCase):