问题描述
我的脚本:
class Pivot:
def __init__(self):
self.args = self.parse_args()
self.path = os.getcwd()
self.file = self.args.filename
if self.args.delimiter:
self.delimiter = self.args.delimiter
else:
self.delimiter = ";"
def parse_args(self):
parser = argparse.ArgumentParser(prog="TBD",description="TBD")
parser.add_argument("-f","--filename",help="blahblah")
parser.add_argument("-d","--delimiter",help="blahblah")
args = parser.parse_args()
return args
if __name__ == "__main__":
p = Pivot()
还有我现在的 test.py:
class TestPivot(unittest.TestCase):
def setUp(self):
self.pivot = Pivot()
def tearDown(self):
pass
def test_parse_args(self):
parsed = self.parser.parse_args(['-f','test'])
self.assertEqual(parsed.something,'test')
def test_minimal(self):
"""To make sure at least a test is passed"""
self.assertEqual("neo".upper(),"NEO")
然后当我运行 python3 -m unittest tests/test_Pivot.py
时,我得到:
E
usage: Pivot table representation [-h] [-f FILENAME] [-d DELIMITER]
Pivot table representation: error: unrecognized arguments: tests/test_Pivot.py
E
======================================================================
ERROR: test_create_pivot (tests.test_Pivot.Pivot)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Project/tests/test_Pivot.py",line 21,in setUp
self.pivot = Pivot()
File "/Project/Pivot.py",line 25,in __init__
self.args = self.parse_args()
File "/Project/Pivot.py",line 42,in parse_args
args = parser.parse_args()
在处理 argparse 时,我的班级是否应该以不同的方式重组,如果是,如何重组?目前,由于类的实例化方式,我什至无法运行简单的测试。
解决方法
感谢您的建议 (@MrBean Bremen),我重构了我的代码,以便 parse_args
现在位于我的班级之外:
def parse_args(args):
parser = argparse.ArgumentParser(prog="blah",description="blah")
parser.add_argument("-f","--filename",help="blah")
parser.add_argument("-d","--delimiter",help="blah")
return parser.parse_args(args)
class Pivot:
def __init__(self,args):
self.path = os.getcwd()
self.file = args.filename
if args.delimiter:
self.delimiter = args.delimiter
else:
self.delimiter = ";"
if __name__ == "__main__":
args = parse_args(sys.argv[1:])
p = Pivot(args)
然后我的测试变成:
class TestPivot(unittest.TestCase):
def setUp(self):
args = parse_args(["-f","test1","-d",","])
self.pivot = Pivot(args)
def test_init(self):
self.assertEqual(self.pivot.file,"test1")
self.assertEqual(self.pivot.delimiter,")
def test_parse_args(self):
parsed = parse_args(["-f","test2"])
self.assertEqual(parsed.filename,"test2")
self.assertNotEqual(parsed.filename,"test3")