<分区>
当我仅使用 unittest 进行简单测试时，它不会显示任何错误。 但是当我尝试对我的测试文件进行 nosetests 时，它会出现 ImportError。这是必要的信息。
项目结构:
-rwxrwxr-x __init__.py
-rw-rw-r-- __init__.pyc
drwxrwxr-x romannumeralconverter
drwxrwxr-x tests
./romannumeralconverter:
-rwxrwxr-x __init__.py
-rw-rw-r-- __init__.pyc
-rwxrwxr-x romannumeralconverter.py
-rw-rw-r-- romannumeralconverter.pyc
./tests:
-rwxrwxr-x __init__.py
-rw-rw-r-- __init__.pyc
-rw-rw-r-- romannumeralconvertertest.py
-rw-rw-r-- romannumeralconvertertest.pyc
测试文件-romannumeralconvertertest.py:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import unittest
from romannumeralconverter.romannumeralconverter import RomanNumeralConverter
class RomanNumeralConverterTest(unittest.TestCase):
def test_parsing_millenia(self):
"""Testing if millenia"""
value = RomanNumeralConverter("M")
self.assertEquals(1000, value.convert_to_decimal())
#@unittest.skip("demonstrating skipping")
def test_parsing_century(self):
value = RomanNumeralConverter("C")
self.assertEquals(100, value.convert_to_decimal())
def test_parsing_half_century(self):
value = RomanNumeralConverter("L")
self.assertEquals(50, value.convert_to_decimal())
if __name__ == "__main__":
suite = unittest.TestLoader().loadTestsFromTestCase(RomanNumeralConverterTest)
unittest.TextTestRunner(verbosity=3).run(suite)
应用文件:- romannumeralconverter.py:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
class RomanNumeralConverter(object):
def __init__(self, roman_numeral):
self.roman_numeral = roman_numeral
self.digit_map = {"M": 1000, "D": 500, "C": 100, "L": 50, "X": 10, "V": 5, "I": 1}
self.i_rule = ('V','X')
self.x_rule = ('L','C')
self.c_rule = ('D','M')
self.rules = {"I": self.i_rule, "X": self.x_rule, "C": self.c_rule}
def zwei_convert_to_decimal(self):
val = 0
oldelement = 0
for char in self.roman_numeral:
if oldelement != 0 and self.digit_map[char] > self.digit_map[oldelement]:
pass
oldelement = char
def convert_to_decimal(self):
val = 0
for char in self.roman_numeral:
val += self.digit_map[char]
return val
正常测试输出:
▶ python romannumeralconvertertest.py
test_parsing_century (__main__.RomanNumeralConverterTest) ... ok
test_parsing_half_century (__main__.RomanNumeralConverterTest) ... ok
test_parsing_millenia (__main__.RomanNumeralConverterTest)
Testing if millenia ... ok
----------------------------------------------------------------------
Ran 3 tests in 0.000s
OK
Nose 测试输出:
▶ nosetests romannumeralconvertertest.py
E
======================================================================
ERROR: Failure: ImportError (cannot import name RomanNumeralConverter)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/nose/loader.py", line 420, in loadTestsFromName
addr.filename, addr.module)
File "/usr/lib/python2.7/dist-packages/nose/importer.py", line 47, in importFromPath
return self.importFromDir(dir_path, fqname)
File "/usr/lib/python2.7/dist-packages/nose/importer.py", line 94, in importFromDir
mod = load_module(part_fqname, fh, filename, desc)
File "/home/username/Development/learning/romannumeralconverter/tests/romannumeralconvertertest.py", line 5, in <module>
from romannumeralconverter.romannumeralconverter import RomanNumeralConverter
ImportError: cannot import name RomanNumeralConverter
----------------------------------------------------------------------
Ran 1 test in 0.000s
FAILED (errors=1)
系统路径
/home/username/Development/learning/romannumeralconverter/tests
/home/username/Development/learning/romannumeralconverter/tests
/home/username/Development/learning/romannumeralconverter
/usr/lib/python2.7
/usr/lib/python2.7/plat-x86_64-linux-gnu
/usr/lib/python2.7/lib-tk
/usr/lib/python2.7/lib-old
/usr/lib/python2.7/lib-dynload
/home/username/.local/lib/python2.7/site-packages
/usr/local/lib/python2.7/dist-packages
/usr/lib/python2.7/dist-packages
/usr/lib/python2.7/dist-packages/gtk-2.0
/usr/lib/python2.7/dist-packages/ubuntu-sso-client