Nose tests decorators

Nose is a Python framework that makes (unit) testing a bit easier. Nose helps you organize tests. According to the nose documentation:

Any python source file, directory or package that matches the testMatch regular expression (by default: (?:^|[b_.-])[Tt]est) will be collected as a test.

Nose makes extensive use of decorators. Python decorators are annotations that indicate something about a method or a function. The numpy.testing module has a number of decorators:

Decorator	Description
numpy.testing.decorators.deprecated	This is the filter's deprecation warning when running tests
numpy.testing.decorators.knownfailureif	This raises the KnownFailureTest exception based on a condition.
numpy.testing.decorators.setastest	This marks a function as being a test or not being a test.
numpy.testing.decorators.skipif	This raises the SkipTest exception based on a condition.
numpy.testing.decorators.slow	This labels test functions or methods as slow.

Additionally...

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