[jowiar]

When I read code like this and find that half of the tests are, more or less, a typechecker, it reduces to an argument for static typing.

[voxtex]

Completely agree with you. Many of the tests don't do any kind of assertion, simply ensure that an exception isn't thrown on the invocation of a method. An interface defined in a static language would render the majority of these tests unnecessary.

[joncooper]

Indeed. Once you realize this it doesn't take very long to get excited about statically typed languages, especially with type inference.