This isn't officially compatible with the oldest version of Node that
Jasmine supports, but it works. If it stops working, we can always disable
linting in CI builds on older Node versions.
The message return on negate clause was not expected. This makes it negative to match expectation. This also add tests for the change, and renames some tests to make it more clear.
This approach makes it hard to scale and goes against DRY and debuggability vs the previous approach which followed Python parameterized testing, but this was the recommendation of the Jasmine team to keep it consistent with other tests.
Further tests here could be adding other types like Array, Map, WeakMap, Set, WeakSet...
Steve Gravrock