We have unnecessary runs of the `test.sh` script. We can simplify the CI
pipeline and at the same time improve the docs build by using `--cfg
docsrs`.
- Remove the `wasm` job, replace it by enabling the `DO_WASM` env var for
the stable toolchain run in the `Tests` job.
- Add `--cfg docrs` flag to the docs build and set the `DO_DOCS` env var
as part of the nightly toolchain run in `Tests` job.
The end result is one less run of the `test.sh` script and better test
coverage.
Currently we use 'no default features' for the `bitcoin_hashes`
dependency. Doing so means that if users want the `std` feature they
need to explicitly add a `bitcoin_hashes` dependency even though we
re-export `bitcoin_hashes` as `hashes`. This means that in the common
case the re-export is pointless. As an example, `rust-bitcoin`
unnecessarily requires an explicit dependency on `bitcoin_hashes`.
Add `bitcoin-hashes-std` feature so that users do not need an explicit
dependency in the common use case.
Change the test matrix to only test '*-std' features when 'std' is
enabled since enabling one without the other is illogical. Please note,
this replaces the test run of feature 'std'+'rand'+'rand-std' with just
'std'+'rand-std' because enabling 'rand-std' enables 'rand' so the
explicit additional feature is redundant.
Currently various features fail to build when enabled without default
features. This is because many tests need feature gating.
Feature gating the import statements quickly turns into spaghetti when
trying to cover all combinations of two features correctly, instead just
allow unused imports on `tests` modules where needed.
Add correct feature requirements to the examples so they also can be run
without default features.
Improve the CI script by doing:
- Add `std` to the feature matrix.
- Add `--no-default-features` to test runs in the CI script.
The examples depend on having the "std" feature [1]. In preparation for
being able to run tests with `--no-default-features` add the "std"
feature as a requirement for all three examples. While we are at it use
the correct rand feature requirement: `rand-std`.
[1] Technically we only need "alloc" but "alloc" is not working with
Rust 1.29 currently so just use "std".
Panicking from C is not UB in newer rust versions and will reliably
trigger an abort (without unwinding). In older rust versions, it is
technically UB but empirically it seems to "just work" (and what should
it realistically do except crashing, which is what we intent).
Since there's potentially no unwinding, we can't test this behavior
using [should_panic]. This PR will instead check the libtest output
explicitly in our CI tests.
Fixes#228.
It's super dangerous to use Cargo features for this, since they can be set
accidentally (or maliciously by any crate in a user's entire dep tree). Instead
we can just require users set `RUSTFLAGS` appropriately, which we can easily
do in our fuzzing scripts.
Tobin Harding
Devrandom
Tim Ruffing
Andrew Poelstra
Elichai Turkel