Unit Testing : Accessor Methods : Mutable Object

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Unit Testing : Accessor Methods : Mutable Object

Unit Testing : Accessor Methods : Mutable Object

2005-01-29 - By Marvin Toll

Back

Reply: 1 2 3

Although this forum does not normally focus on unit testing core patterns -
the topic is at least tangentially related.

I'm curious if anyone has "run into" a unit test utility method for
verifying accessor methods on a mutable object. A unit test might look
something like:

/**
* Verify accessor method(s) of mutable business object (BO).
*/
public void testMutableBusinessObject() {

ExampleBO exampleBO = new ExampleBO();

assertTrue(TestUtil.verifyAccessorMethodsForMutable(exampleBO));
}

... and TestUtil.verifyAccessorMethodsForMutable() would use reflection
to "discover" all matching getters/setters and verify that setters return
the "same" attribute object (or primitive value) as was passed to the
corresponding setter. The class would instantiate attribute objects (or
assign primitive values) for testing.

Of course, it would also be nice to have an immutable version that
verified attribute objects were "equal" but not the "same".

Or perhaps, someone has an alternative strategy for achieving unit test
coverage on accessor methods???

_Marvin

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