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//! Build program to generate a program which runs all the testsuites.
//!
//! By generating a separate `#[test]` test for each file, we allow cargo test
//! to automatically run the files in parallel.
fn main() {
#[cfg(feature = "test_programs")]
wasi_tests::build_and_generate_tests()
}
#[cfg(feature = "test_programs")]
mod wasi_tests {
use std::env;
use std::fs::{read_dir, File};
use std::io::{self, Write};
use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
pub(super) fn build_and_generate_tests() {
// Validate if any of test sources are present and if they changed
// This should always work since there is no submodule to init anymore
let bin_tests = std::fs::read_dir("wasi-tests/src/bin").unwrap();
for test in bin_tests {
if let Ok(test_file) = test {
let test_file_path = test_file
.path()
.into_os_string()
.into_string()
.expect("test file path");
println!("cargo:rerun-if-changed={}", test_file_path);
}
}
println!("cargo:rerun-if-changed=wasi-tests/Cargo.toml");
println!("cargo:rerun-if-changed=wasi-tests/src/lib.rs");
// Build tests to OUT_DIR (target/*/build/wasi-common-*/out/wasm32-wasi/release/*.wasm)
let out_dir = PathBuf::from(
env::var("OUT_DIR").expect("The OUT_DIR environment variable must be set"),
);
let mut out =
File::create(out_dir.join("wasi_tests.rs")).expect("error generating test source file");
build_tests("wasi-tests", &out_dir).expect("building tests");
test_directory(&mut out, "wasi-cap-std-sync", "cap_std_sync", &out_dir)
.expect("generating wasi-cap-std-sync tests");
test_directory(&mut out, "wasi-tokio", "tokio", &out_dir)
.expect("generating wasi-tokio tests");
}
fn build_tests(testsuite: &str, out_dir: &Path) -> io::Result<()> {
let mut cmd = Command::new("cargo");
cmd.env("CARGO_PROFILE_RELEASE_DEBUG", "1");
cmd.args(&[
"build",
"--release",
"--target=wasm32-wasi",
"--target-dir",
out_dir.to_str().unwrap(),
])
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.current_dir(testsuite);
let output = cmd.output()?;
let status = output.status;
if !status.success() {
panic!(
"Building tests failed: exit code: {}",
status.code().unwrap()
);
}
Ok(())
}
fn test_directory(
out: &mut File,
testsuite: &str,
runtime: &str,
out_dir: &Path,
) -> io::Result<()> {
let mut dir_entries: Vec<_> = read_dir(out_dir.join("wasm32-wasi/release"))
.expect("reading testsuite directory")
.map(|r| r.expect("reading testsuite directory entry"))
.filter(|dir_entry| {
let p = dir_entry.path();
if let Some(ext) = p.extension() {
// Only look at wast files.
if ext == "wasm" {
// Ignore files starting with `.`, which could be editor temporary files
if let Some(stem) = p.file_stem() {
if let Some(stemstr) = stem.to_str() {
if !stemstr.starts_with('.') {
return true;
}
}
}
}
}
false
})
.collect();
dir_entries.sort_by_key(|dir| dir.path());
writeln!(
out,
"mod {} {{",
Path::new(testsuite)
.file_stem()
.expect("testsuite filename should have a stem")
.to_str()
.expect("testsuite filename should be representable as a string")
.replace("-", "_")
)?;
writeln!(
out,
" use super::{{runtime::{} as runtime, utils, setup_log}};",
runtime
)?;
for dir_entry in dir_entries {
write_testsuite_tests(out, &dir_entry.path(), testsuite)?;
}
writeln!(out, "}}")?;
Ok(())
}
fn write_testsuite_tests(out: &mut File, path: &Path, testsuite: &str) -> io::Result<()> {
let stemstr = path
.file_stem()
.expect("file_stem")
.to_str()
.expect("to_str");
writeln!(out, " #[test]")?;
let test_fn_name = stemstr.replace("-", "_");
if ignore(testsuite, &test_fn_name) {
writeln!(out, " #[ignore]")?;
}
writeln!(out, " fn r#{}() -> anyhow::Result<()> {{", test_fn_name,)?;
writeln!(out, " setup_log();")?;
writeln!(
out,
" let path = std::path::Path::new(r#\"{}\"#);",
path.display()
)?;
writeln!(out, " let data = wat::parse_file(path)?;")?;
writeln!(
out,
" let bin_name = utils::extract_exec_name_from_path(path)?;"
)?;
let workspace = if no_preopens(testsuite, stemstr) {
"None"
} else {
writeln!(
out,
" let workspace = utils::prepare_workspace(&bin_name)?;"
)?;
"Some(workspace.path())"
};
writeln!(
out,
" runtime::{}(&data, &bin_name, {})",
if inherit_stdio(testsuite, stemstr) {
"instantiate_inherit_stdio"
} else {
"instantiate"
},
workspace,
)?;
writeln!(out, " }}")?;
writeln!(out)?;
Ok(())
}
fn ignore(testsuite: &str, name: &str) -> bool {
match testsuite {
"wasi-cap-std-sync" => cap_std_sync_ignore(name),
"wasi-virtfs" => virtfs_ignore(name),
"wasi-tokio" => tokio_ignore(name),
_ => panic!("unknown test suite: {}", testsuite),
}
}
#[cfg(not(windows))]
/// Ignore tests that aren't supported yet.
fn cap_std_sync_ignore(name: &str) -> bool {
[
// Trailing slash related bugs:
"path_rename_file_trailing_slashes",
"remove_directory_trailing_slashes",
]
.contains(&name)
}
#[cfg(windows)]
/// Ignore tests that aren't supported yet.
fn cap_std_sync_ignore(name: &str) -> bool {
[
// Trailing slash related bugs
"interesting_paths",
"path_rename_file_trailing_slashes",
"remove_directory_trailing_slashes",
]
.contains(&name)
}
/// Tokio should support the same things as cap_std_sync
fn tokio_ignore(name: &str) -> bool {
cap_std_sync_ignore(name)
}
/// Virtfs barely works at all and is not suitable for any purpose
fn virtfs_ignore(name: &str) -> bool {
[
"dangling_fd",
"dangling_symlink",
"directory_seek",
"fd_advise",
"fd_filestat_set",
"fd_flags_set",
"fd_readdir",
"file_allocate",
"file_pread_pwrite",
"file_seek_tell",
"file_truncation",
"file_unbuffered_write",
"interesting_paths",
"isatty",
"nofollow_errors",
"path_filestat",
"path_link",
"path_open_create_existing",
"path_open_dirfd_not_dir",
"path_open_read_without_rights",
"path_rename",
"path_rename_dir_trailing_slashes",
"path_rename_file_trailing_slashes",
"path_symlink_trailing_slashes",
"poll_oneoff",
"poll_oneoff_stdio",
"readlink",
"remove_directory_trailing_slashes",
"remove_nonempty_directory",
"renumber",
"symlink_create",
"symlink_filestat",
"symlink_loop",
"truncation_rights",
"unlink_file_trailing_slashes",
]
.contains(&name)
}
/// Mark tests which do not require preopens
fn no_preopens(testsuite: &str, name: &str) -> bool {
if testsuite.starts_with("wasi-") {
match name {
"big_random_buf" => true,
"clock_time_get" => true,
"sched_yield" => true,
"poll_oneoff_stdio" => true,
_ => false,
}
} else {
panic!("unknown test suite {}", testsuite)
}
}
/// Mark tests which require inheriting parent process stdio
fn inherit_stdio(testsuite: &str, name: &str) -> bool {
match testsuite {
"wasi-cap-std-sync" | "wasi-tokio" => match name {
"poll_oneoff_stdio" => true,
_ => false,
},
"wasi-virtfs" => false,
_ => panic!("unknown test suite {}", testsuite),
}
}
}