py.test - pytest.mark.parametrize to read from list to generate tests dynamically -


i have function reads yaml file , generates test iterations list of dictionaries below:

   iterations = lib_iterations()     print iterations     iterations = [{'mode':1,'format':5,'ip':'192.16.1.103'},               {'mode':2,'format':6,'ip':'192.16.1.104'},               {'mode':2,'format':8,'ip':'192.16.1.110'},               {'mode':6,'format':2,'ip':'192.16.1.105'},               {'mode':5,'format':7,'ip':'192.16.1.102'},               {'mode':4,'format':2,'ip':'192.16.1.101'}]

i need able pass set pytest.mark.parametrize generate test each iteration/each row in list.

i not know dictionary keys before call function lib_iterations generates list of dictionaries.

any ideas on how this?

thanks ab

if problem how pass iterations list pytest parametrize decorator, can this:

@pytest.mark.parametrize('testdata', [i in iterations])

if content of iterations unknown in test module can use pytest_generate_tests hook. in hook function can load yaml file , pass content metafunc.parametrize:

import yaml  def pytest_generate_tests(metafunc):     if 'testdata' in metafunc.fixturenames:         open("testdata.yml", 'r') f:             iterations = yaml.load(f)             metafunc.parametrize('testdata', [i in iterations])

the test function using fixture:

def test_it(testdata):     print testdata

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