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# now set the cmd-line args to the test class If server_from_cmd_line and port_from_cmd_line and hasattr(metafunc.cls, 'real_server'): # check if this function is in a test-class that needs the cmd-line args Print('command line passed for -server ()'.format(port_from_cmd_line)) ''' just to attach the cmd-line args to a test-class that needs them '''
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Print('Extracted arg is => %s' % sys.argv)Ĭall this using python run.py filename.py arg1 If you want to pass some argument before running pytest then run the pytest from a python script after extracting your variable.Īs others suggested though you would probably want to parameterize your tests in some other way, Try:Parameterized pytest. py and arg1, But there is no module arg1. It also provides the other important Computer Science Subjects which is very helpful to clearly understand the concept to every Technical Students. py arg1 command is trying to call pytest on two modules. Webeduclick is an online educational platform where provides tutorials of programming languages. I think that solution 1) is neater and easier to follow.Your pytest. Suite = unittest.TestLoader().loadTestsFromTestCase(MyTests) This is done by replacing the block at the bottom of my_tests.py with: if _name_ = '_main_':Ģ) Run the tests with an alternative unittest function to unittest.main(): if _name_ = '_main_': There are two ways to resolve this problem:ġ) Extract the command-line arguments into separate variables and then remove them from sys.argv before calling unittest.main(). As neither of these are present in my_tests.py, the above error is therefore occurring. For the example above, unittest.main() is therefore looking for a TestCase object called foo, or a callable object called foo that returns a TestCase. What’s happening is that if command-line arguments are supplied to the test script in sys.argv, unittest tries to use these arguments as test cases. I’d used unittest.main() many times before without issue, and it wasn’t too clear from the error message what the problem is here. Suites = įile "/System/Library/Frameworks/amework/Versions/2.7/lib/python2.7/unittest/loader.py", line 100, in loadTestsFromNameĪttributeError: 'module' object has no attribute 'foo' , I get the following output: Traceback (most recent call last):įile "/System/Library/Frameworks/amework/Versions/2.7/lib/python2.7/unittest/main.py", line 94, in _init_įile "/System/Library/Frameworks/amework/Versions/2.7/lib/python2.7/unittest/main.py", line 149, in parseArgsįile "/System/Library/Frameworks/amework/Versions/2.7/lib/python2.7/unittest/main.py", line 158, in createTestsįile "/System/Library/Frameworks/amework/Versions/2.7/lib/python2.7/unittest/loader.py", line 128, in loadTestsFromNames When I run this script with python my_tests.py foo
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Sys.exit("ERROR: A command-line parameter must be supplied for these tests") Result = get_thing("second", command_line_param) Result = get_thing("first", command_line_param) Here is a simple example of a Python test file my_tests.py to demonstrate this problem: import unittest This problem occurs both with Python 2.7 and 3.3. I’ve recently come across a problem regarding the unittest module in Python when using command-line arguments.