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Python Pytest examples

Posted
By Hector G Serrano 1 min read

@pytest.mark.parametrize example

Used to pass more than one case to a test.

The next example is to test a funcion that validates the string conforms to the Juniper naming convention. We expect the function to return a boolean.

We test the function by passing many differet inputs (where not all of them are strings) along with the expected boolean value we expect the function to return on each case.

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import pytest

def is_valid_juniper_interface_format(interface) -> bool:
    """
    Function that validates that we are passing as a string a Juniper interface
    that adheres to the Junos OS naming convention
    """
    ...
    return result

@pytest.mark.parametrize("interface, result", [
    ('ge-0/0/1', True),
    ('ge-0/1/0', True),
    ('ge-1/1/0', True),
    ('xe-0/0/2', True),
    ('et-0/0/3', True),
    ('xe-0/0/1:0', True),
    ('et-0/0/0:1', True),
    ('et-0/0/0:2', True),
    ('et-0/0/0:3', True),
    ('et-0/0/0:4', True),
    ('ge-0/0/12xy', False),
    ('xxe-0/0/7', False),
    ('eth1/2', False),
    ('FastEthernet0/0', False),
    ('GigabitEthernet0/1', False),
    ('', False),
    ('1234', False),
    (1234, False),
    ([], False),
    ((), False),
    ({}, False),
    (True, False),
    (False, False),
])
def test_juniper_interface_format(interface, result):
    """
    Test to validate that we are passing as a string a Juniper interface
    that adheres to the Junos OS naming convention
    """
    assert is_valid_juniper_interface_format(interface) == result

References

PYTHON, PYTEST
python
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