Sheetal Nandi 568049474e Tests to check equivalency of union types ...

A union type encompasses an unordered set of unrelated types (that is, types that aren’t subtypes of each other). The following rules govern union types:
•	A | B is equivalent to A if B is a subtype of A.
•	A | B is equivalent to B | A.
•	AB | C is equivalent to A | BC, where AB is A | B and BC is B | C.

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Tests to check equivalency of union types

2014-11-04 13:18:14 -08:00