rust/tests/fmt.rs

40 lines
1.2 KiB
Rust

#![cfg_attr(feature = "deny-warnings", deny(warnings))]
#![warn(rust_2018_idioms, unused_lifetimes)]
use std::path::PathBuf;
use std::process::Command;
#[test]
fn fmt() {
if option_env!("RUSTC_TEST_SUITE").is_some() || option_env!("NO_FMT_TEST").is_some() {
return;
}
// Skip this test if nightly rustfmt is unavailable
let rustup_output = Command::new("rustup")
.args(&["component", "list", "--toolchain", "nightly"])
.output()
.unwrap();
assert!(rustup_output.status.success());
let component_output = String::from_utf8_lossy(&rustup_output.stdout);
if !component_output.contains("rustfmt") {
return;
}
let root_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
let output = Command::new("cargo")
.current_dir(root_dir)
.args(&["dev", "fmt", "--check"])
.output()
.unwrap();
println!("status: {}", output.status);
println!("stdout: {}", String::from_utf8_lossy(&output.stdout));
println!("stderr: {}", String::from_utf8_lossy(&output.stderr));
assert!(
output.status.success(),
"Formatting check failed. Run `cargo dev fmt` to update formatting."
);
}