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// Check libtest's JSON output against snapshots.
//@ ignore-cross-compile
//@ needs-unwind (test file contains #[should_panic] test)
use run_make_support::{cmd, diff, rustc, serde_json};
fn main() {
rustc().arg("--test").input("f.rs").run();
run_tests(&[], "output-default.json");
run_tests(&["--show-output"], "output-stdout-success.json");
}
#[track_caller]
fn run_tests(extra_args: &[&str], expected_file: &str) {
let cmd_out = cmd("./f")
.env("RUST_BACKTRACE", "0")
.args(&["-Zunstable-options", "--test-threads=1", "--format=json"])
.args(extra_args)
.run_fail();
let test_stdout = &cmd_out.stdout_utf8();
// Verify that the test process output is JSON Lines, i.e. each line is valid JSON.
for (line, n) in test_stdout.lines().zip(1..) {
if let Err(e) = serde_json::from_str::<serde_json::Value>(line) {
panic!(
"could not parse JSON on line {n}: {e}\n\
\n\
=== STDOUT ===\n\
{test_stdout}\
=============="
);
}
}
diff()
.expected_file(expected_file)
.actual_text("stdout", test_stdout)
.normalize(r#"(?<prefix>"exec_time": )[0-9.]+"#, r#"${prefix}"$$EXEC_TIME""#)
.normalize(r"thread '(?P<name>.*?)' \(\d+\) panicked", "thread '$name' ($$TID) panicked")
.run();
}
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