This introduces assertAttrsEqual(), an assertion method that takes an

object and a dictionary of attribute names and values and compares for

equality. If an attribute is missing or not of the expected value,

this will raise an exception.
The new method is useful for comparing the populated fields of an object

after creation or modification, improving readability and reducing

the maintenance burden.

Used this in some unit tests I'm building. Tested both error conditions

and the success condition.