Ensure that NaN values are canonicalized consistently by all invocations
of SetValueInBuffer. Also ensure that `%TypedArray%.prototype.set` and
`%TypedArray%.prototype.slice` preserve the bit-level encoding of the
source data.
Use a set of experimentally-derived expressions known to produce NaN
values with distinct bit patterns in various platforms.
This harness function is not necessary in the majority of cases in which
it is used. Remove its usage to simplify tests and decrease the amount
of domain-specific knowledge necessary to contribute to the test suite.
Persist the harness function itself for use by future tests for ES2015
modules (such a helper is necessary for tests that are interpreted as
module code).
Test specific behaviour for Integer Indexed exotic objects, WRT the
following internal methods:
- [[GetOwnProperty]]
- [[HasProperty]]
- [[DefineOwnProperty]]
- [[Get]]
- [[Set]]
- [[OwnPropertyKeys]]