JSDoc
A non-strict comparison, roughly equivalent to JUnit's assertEquals.
The `equal` assertion uses the simple comparison operator (`==`) to
compare the actual and expected arguments. When they are equal, the
assertion passes; otherwise, it fails. When it fails, both actual and
expected values are displayed in the test result, in addition to a given
message.
`notEqual()` can be used to explicitly test inequality.
`strictEqual()` can be used to test strict equality.