How to write test cases for a init function by Unit test in python? - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: General Coding Help (https://python-forum.io/forum-8.html) +--- Thread: How to write test cases for a init function by Unit test in python? (/thread-24632.html) |
How to write test cases for a init function by Unit test in python? - binhduonggttn - Feb-24-2020 I'm new in Python. I have a __init__ function with information about data sink config and I have to write some test cases fot it. But init is a function which doesn't return any result so it confuses me. Can you show me some ways to implement test case for it ? Thank you. My function : class DataSinkConfig(): DEFAULT_ENTRIES_TABLE = 'entries' DEFAULT_OUTLIERS_TABLE = 'outliers' DEFAULT_OUTLIERCAUSES_TABLE = 'outlier_causes' # Note def __init__(self, dbconf): insopt = dbconf.get('insopt') if insopt is None: self.entries_table_name = self.DEFAULT_ENTRIES_TABLE self.outliers_table_name = self.DEFAULT_OUTLIERS_TABLE self.outlier_causes_table_name = self.DEFAULT_OUTLIERCAUSES_TABLE else: try: dict(insopt) except Exception as e: raise Exception( "Invalid value {} for parameter 'insopt'.".format(insopt)) self.entries_table_name = self.__complement_item(insopt, 'entry_tbl', self.DEFAULT_ENTRIES_TABLE) self.outliers_table_name = self.__complement_item(insopt, 'outlier_tbl', self.DEFAULT_OUTLIERS_TABLE) self.outlier_causes_table_name = self.__complement_item(insopt, 'cause_tbl', self.DEFAULT_OUTLIERCAUSES_TABLE)My test is stuck : import unittest import DataSinkConfig, DataSourceConfig class TestDataSink(unittest.TestCase): def setUp(self): #pass if __name__ == "__main__": unittest.main() RE: How to write test cases for a init function by Unit test in python? - jim2007 - Feb-24-2020 In a nutshell create an instance of the class and check that whatever should have been performed were in fact carried out. Check if properties were correctly set, do method return the correct values and so on. RE: How to write test cases for a init function by Unit test in python? - Larz60+ - Feb-24-2020 you have: class DataSinkConfig(): DEFAULT_ENTRIES_TABLE = 'entries' DEFAULT_OUTLIERS_TABLE = 'outliers' DEFAULT_OUTLIERCAUSES_TABLE = 'outlier_causes' # Note def __init__(self, dbconf): insopt = dbconf.get('insopt') if insopt is None: self.entries_table_name = self.DEFAULT_ENTRIES_TABLE self.outliers_table_name = self.DEFAULT_OUTLIERS_TABLE self.outlier_causes_table_name = self.DEFAULT_OUTLIERCAUSES_TABLEwhy not just?: class DataSinkConfig(): def __init__(self, dbconf): insopt = dbconf.get('insopt') if insopt is None: self.entries_table_name = 'entries' self.outliers_table_name = 'outliers' self.outlier_causes_table_name = 'outlier_causes' |