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//! A test suite to parse everything in `parse-fail` and assert that it matches
//! the `*.err` file it generates.
//!
//! Use `BLESS=1` in the environment to auto-update `*.err` files. Be sure to
//! look at the diff!
use libtest_mimic::{Arguments, Trial};
use std::env;
use std::path::{Path, PathBuf};
fn main() {
let mut tests = Vec::new();
find_tests("tests/parse-fail".as_ref(), &mut tests);
let bless = env::var("BLESS").is_ok();
let mut trials = Vec::new();
for test in tests {
let trial = Trial::test(format!("{test:?}"), move || {
run_test(&test, bless).map_err(|e| format!("{e:?}").into())
});
trials.push(trial);
}
let mut args = Arguments::from_args();
if cfg!(target_family = "wasm") && !cfg!(target_feature = "atomics") {
args.test_threads = Some(1);
}
libtest_mimic::run(&args, trials).exit();
}
fn run_test(test: &Path, bless: bool) -> anyhow::Result<()> {
let err = match wat::parse_file(test) {
Ok(_) => anyhow::bail!("{} parsed successfully", test.display()),
Err(e) => e.to_string() + "\n",
};
let assert = test.with_extension("wat.err");
if bless {
std::fs::write(assert, err.to_string())?;
return Ok(());
}
// Ignore CRLF line ending and force always `\n`
let assert = std::fs::read_to_string(assert)
.unwrap_or(String::new())
.replace("\r\n", "\n");
// Compare normalize verisons which handles weirdness like path differences
if normalize(&assert) == normalize(&err) {
return Ok(());
}
anyhow::bail!(
"errors did not match:\n\nexpected:\n\t{}\nactual:\n\t{}\n",
tab(&assert),
tab(&err),
);
fn normalize(s: &str) -> String {
s.replace("\\", "/")
}
fn tab(s: &str) -> String {
s.replace("\n", "\n\t")
}
}
fn find_tests(path: &Path, tests: &mut Vec<PathBuf>) {
for f in path.read_dir().unwrap() {
let f = f.unwrap();
if f.file_type().unwrap().is_dir() {
find_tests(&f.path(), tests);
continue;
}
match f.path().extension().and_then(|s| s.to_str()) {
Some("wat") => {}
_ => continue,
}
tests.push(f.path());
}
}