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In some cases for Python unit tests, we want to automatically perform setUp methods in as declared in a base class. However, we still want setUp to work as per normal in the subclass. The following code will proxy the new setUp function to run it's base class' and the new one.

# Define a common test base for starting servers
class MyBaseTestCase(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        """On inherited classes, run our `setUp` method"""
        # Inspired via http://stackoverflow.com/questions/1323455/python-unit-test-with-base-and-sub-class/17696807#17696807
        if cls is not MyBaseTestCase and cls.setUp is not MyBaseTestCase.setUp:

Update May 2017

Eric Bidelman has documented some of the common workflows possible with headless Chrome over in https://developers.google.com/web/updates/2017/04/headless-chrome.

Update

If you're looking at this in 2016 and beyond, I strongly recommend investigating real headless Chrome: https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md

Windows and Mac users might find using Justin Ribeiro's Docker setup useful here while full support for these platforms is being worked out.

Readings

The Nature of Code

Artful Mathematics: The Heritage of M. C. Escher

Designing the Internet of Things
Net Art

	// Params:
	// 1. query (filter) if you only want to remove this field from some records. {} will select any.
	// 2. $unset the field(s) that you want to remove. Here I've set them to null but the value doesn't matter as it's ignored.
	// 3. multi must be set to true otherwise it will only operate on the first record that it finds.
	//
	// Run this command in the MongoDB shell

	db.<collectionName>.update( {}, {$unset: {<fieldName1>: null, <fieldName2>: null}}, {multi: true});