Before, results from `dca` would look something like
## + py/meta/alerts/remote-flow-sources-reach
- django/django@c2250cf_cb8f: tests/messages_tests/urls.py:38:16:38:48
reachable with taint-tracking from RemoteFlowSource
- django/django@c2250cf_cb8f: tests/messages_tests/urls.py:38:9:38:12
reachable with taint-tracking from RemoteFlowSource
now it should make it easier to spot _what_ it is that actually changed,
since we pretty-print the node.
The meat of this PR is described in the new python/ql/test/experimental/meta/InlineTaintTest.qll file:
> Defines a InlineExpectationsTest for checking whether any arguments in
> `ensure_tainted` and `ensure_not_tainted` calls are tainted.
>
> Also defines query predicates to ensure that:
> - if any arguments to `ensure_not_tainted` are tainted, their annotation is marked with `SPURIOUS`.
> - if any arguments to `ensure_tainted` are not tainted, their annotation is marked with `MISSING`.
>
> The functionality of this module is tested in `ql/test/experimental/meta/inline-taint-test-demo`.