87 lines
2.6 KiB
Rust
87 lines
2.6 KiB
Rust
//! This test checks if unstable feature usage metric dump files `unstable-feature-usage*.json` work
|
|
//! as expected.
|
|
//!
|
|
//! - Basic sanity checks on a default ICE dump.
|
|
//!
|
|
//! See <https://github.com/rust-lang/rust/issues/129485>.
|
|
//!
|
|
//! # Test history
|
|
//!
|
|
//! - forked from dump-ice-to-disk test, which has flakeyness issues on i686-mingw, I'm assuming
|
|
//! those will be present in this test as well on the same platform
|
|
|
|
//@ ignore-windows
|
|
//FIXME(#128911): still flakey on i686-mingw.
|
|
|
|
use std::path::{Path, PathBuf};
|
|
|
|
use run_make_support::rfs::create_dir_all;
|
|
use run_make_support::{
|
|
cwd, filename_contains, has_extension, rfs, run_in_tmpdir, rustc, serde_json,
|
|
shallow_find_files,
|
|
};
|
|
|
|
fn find_feature_usage_metrics<P: AsRef<Path>>(dir: P) -> Vec<PathBuf> {
|
|
shallow_find_files(dir, |path| {
|
|
if filename_contains(path, "unstable_feature_usage") && has_extension(path, "json") {
|
|
true
|
|
} else {
|
|
dbg!(path);
|
|
false
|
|
}
|
|
})
|
|
}
|
|
|
|
fn main() {
|
|
test_metrics_dump();
|
|
test_metrics_errors();
|
|
}
|
|
|
|
#[track_caller]
|
|
fn test_metrics_dump() {
|
|
run_in_tmpdir(|| {
|
|
let metrics_dir = cwd().join("metrics");
|
|
create_dir_all(&metrics_dir);
|
|
rustc()
|
|
.input("lib.rs")
|
|
.env("RUST_BACKTRACE", "short")
|
|
.arg(format!("-Zmetrics-dir={}", metrics_dir.display()))
|
|
.run();
|
|
let mut metrics = find_feature_usage_metrics(&metrics_dir);
|
|
let json_path =
|
|
metrics.pop().expect("there should be one metrics file in the output directory");
|
|
|
|
// After the `pop` above, there should be no files left.
|
|
assert!(
|
|
metrics.is_empty(),
|
|
"there should be no more than one metrics file in the output directory"
|
|
);
|
|
|
|
let message = rfs::read_to_string(json_path);
|
|
let parsed: serde_json::Value =
|
|
serde_json::from_str(&message).expect("metrics should be dumped as json");
|
|
let expected = serde_json::json!(
|
|
{
|
|
"lib_features":[{"symbol":"ascii_char"}],
|
|
"lang_features":[{"symbol":"box_patterns","since":null}]
|
|
}
|
|
);
|
|
|
|
assert_eq!(expected, parsed);
|
|
});
|
|
}
|
|
|
|
#[track_caller]
|
|
fn test_metrics_errors() {
|
|
run_in_tmpdir(|| {
|
|
rustc()
|
|
.input("lib.rs")
|
|
.env("RUST_BACKTRACE", "short")
|
|
.arg("-Zmetrics-dir=invaliddirectorythatdefinitelydoesntexist")
|
|
.run_fail()
|
|
.assert_stderr_contains(
|
|
"error: cannot dump feature usage metrics: No such file or directory",
|
|
)
|
|
.assert_stdout_not_contains("internal compiler error");
|
|
});
|
|
}
|