Merge wasi-misc-tests repo as a subdir (#174)

* Initial checkin.

* Update to rust-lang libc.

* Add a .gitignore file.

* Factor out functions for cleaning up files and directories.

* Fix a typo in a comment.

* Print a "Success!" message if all tests passed.

* Factor out code for creating directories.

* Add wrappers around WASI functions.

These wrappers handle converting from &str to pointer+length and handle
unsafe.

* More refactoring.

* Refactor a fd_close helper.

* Move utility functions into a separate file.

* cargo update

* Add a basic test for random_get.

* Test that directories aren't resizable.

* Test clearing __WASI_RIGHT_PATH_FILESTAT_SET_SIZE.

Ensure that clearing __WASI_RIGHT_PATH_FILESTAT_SET_SIZE succeeds before
testing file truncation.

* cargo update

* Modularise tests for easier use with wasi-common crate

* Add a Code of Conduct and CONTRIBUTING.md.

* Fix typo

* Add testcase for fd_allocate

* Add positive test for fd_renumber

* Assert bufused in readlink_no_buffer testcase

* Add positive readlink testcase

* Add testcase for fd_seek and fd_tell

* Add fd_p{read, write} test

* Add README

* Add cases with trailing slashes to interesting_paths

* Split nofollow_errors testcase into two

* nofollow_errors now operators on symlinks to existing resources
* dangling_symlink covers danling symlinks tests

* Factor out a `create_file` helper function.

* Switch from the error crate to `std::io::Error::last_os_error()`.

* Use `create_file` in the readlink test too.

* Add a test for fd_filestat_set_*

* Minor refactoring

Add missing cleanup_file calls to file_pread_pwrite and
file_seek_tell.

* Add testcase for unbuffered fd_write; fixes #11

* Add testcase for path_rename

* Use the wasi crate.

Switch from depending on libc to depending on the new wasi crate to provide
the low-level WASI interfaces.

See also https://github.com/rust-lang/libc/pull/1461.

* Add a test for path_filestat_*

* Add a test for fd_readdir

* Use expect instead of unwrap

* Add a check for ino.

* Fix the build

* Don't assume a specific order of dirents

* Better test

* Test cookie value

* Fix file types

* Fix the test

* Fix the test

* Fix the test

* Cleanup

* Minor formatting tidying in README.md.

* Fix miscellaneous clippy warnings.

* Rename the crate to wasi-misc-tests.

* Update to wasi 0.7.0.

This switches from using the libc wasi bindings to using the wasi
crate's bindings. This eliminates a git dependency on libc, updates
to the new-style bindings which use Result where possible, and treats
functions that operate on raw file descriptors as unsafe.

* Add various tests for trailing-slash behavior.

* Sync new testcases with latest upstream

* Fix path_filestat testcase

* Add smoke test for fd_advise

This test is a true smoke test as it only tests whether issuing
an advise call to the host's kernel doesn't yield an error. The
consequence of issuing such a syscall is not tested.

* Check if CLOCK_MONOTONIC is actually monotonic

* Refactor the inequality assertions for more debuggable errors.

* Bump libc from 0.2.62 to 0.2.65

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.62 to 0.2.65.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.62...0.2.65)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* Fix compilation error

* Enable Actions and add rust.yml (#35)

* Enable Actions and add rust.yml

This commit enables Github Actions and adds corresponding configuration in rust.yml file.

* Update rust.yml

* Fix formatting

* Add empty .rustfmt.toml config file

* Add badge to README

* Update README

* Clean up Github Actions and README

* Add test case for `poll_oneoff` syscall (#38)

* Add test case for `poll_oneoff` syscall

This commit adds a test case for `poll_oneoff` syscall. In particular,
it builds on the excellent test use case provided by @dunnock in their
repo [poll_oneoff_tests] (thanks!), and tests:
* simple timeout
* stdin read with timeout
* fd read and fd write polls

[poll_oneoff_tests]: https://github.com/dunnock/poll_oneoff_tests

* Apply suggestions and negative test for bad fd

Co-authored-by: Maxim Vorobjov <maxim.vorobjov@gmail.com>

* Add smoke test for STDOUT/ERR readwrite poll

* Add comment on stdin/out/err

* Add a test for `*at`-style functions returning `ENOTDIR` when `dirfd` is not a dir.

* Remove misc_testsuite submodule

* Add "publish=false" to Cargo.toml; remove LICENSE

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "misc_testsuite"]
-	path = misc_testsuite
-	url = https://github.com/cranestation/wasi-misc-tests
 [submodule "WASI"]
 	path = WASI
 	url = https://github.com/WebAssembly/WASI