How to Set A Default Per Test Timeout In Pytest?

To set a default per test timeout in pytest, you can use the pytest_configure function in your conftest.py file. This function allows you to customize various aspects of pytest's behavior. You can set the default per test timeout by using the pytest_addoption hook to add a command-line option for specifying the timeout value. Once the timeout value is specified, you can use the pytest_collection_modifyitems hook to apply the timeout to each test item. By defining these hooks in your conftest.py file, you can easily set a default per test timeout for all your tests in pytest.

How to disable the timeout feature for a specific test in pytest?

In pytest, you can disable the timeout feature for a specific test by using the @pytest.mark.not_timeout decorator with the test function.

For example:

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import pytest

@pytest.mark.not_timeout
def test_long_running_function():
    # code for long running function here
    pass

By adding @pytest.mark.not_timeout to the test function, pytest will skip the timeout feature for that specific test.

Alternatively, you can also use the -k option in the command line to specify which tests to run without a timeout. For example:

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pytest -k "not_timeout"

This will run only the tests that have the @pytest.mark.not_timeout decorator and will not enforce the timeout feature for those tests.

How to install the pytest-timeout plugin for pytest?

To install the pytest-timeout plugin for pytest, you can follow these steps:

1. Make sure you have pytest installed. You can install pytest using pip:

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pip install pytest

1. Install the pytest-timeout plugin using pip:

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pip install pytest-timeout

1. Once the plugin is installed, you can use it by adding the --timeout= option to your pytest command. For example:

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pytest --timeout=10

This will set a timeout of 10 seconds for each test case run by pytest.

You can also configure the plugin in your pytest configuration file (pytest.ini) by adding the following lines:

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[pytest]
timeout = <seconds>

Replace <seconds> with the desired timeout value in seconds.

That's it! You have now installed the pytest-timeout plugin and can use it to set timeouts for your pytest test cases.

How to run multiple tests with different timeout values in pytest?

In pytest, you can use the pytest.mark.timeout marker to set different timeout values for different tests. Here's how you can run multiple tests with different timeout values in pytest:

1. Import the pytest module in your test script:

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import pytest

1. Use the @pytest.mark.timeout decorator to set the timeout value for a specific test:

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@pytest.mark.timeout(5)
def test_slow_function():
    # Code for test_slow_function

1. Run pytest with the -v (verbose) option to see the output of the tests:

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pytest -v test_script.py

This will run all the tests in test_script.py with the specified timeout values. You can set different timeout values for different tests by using the @pytest.mark.timeout decorator as shown above.

Alternatively, you can set a global timeout value for all tests by using the --timeout option when running pytest:

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pytest --timeout=10 -v test_script.py

This will set a timeout of 10 seconds for all tests in test_script.py.

How to set a default per test timeout in pytest using a pytest fixture?

You can set a default per test timeout in pytest using a pytest fixture by defining a custom fixture that sets the timeout duration for each test. Here's an example of how you can create a fixture to set a default per test timeout in pytest:

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import pytest

@pytest.fixture
def set_timeout(request):
    # Set the default timeout duration (in seconds)
    timeout = 10
    request.node.funcargs['timeout'] = timeout

# Use the `set_timeout` fixture to set the default timeout for tests
def test_example(timeout):
    # Run the test with the specified timeout
    assert True

In this example, the set_timeout fixture is defined to set a default timeout duration of 10 seconds for each test. The fixture is then used in the test_example function to set the timeout for that specific test. You can customize the timeout duration in the fixture based on your requirements.