71 lines
2.2 KiB
Rust
71 lines
2.2 KiB
Rust
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// Integration tests for cargo-fmt.
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use std::env;
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use std::process::Command;
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/// Run the cargo-fmt executable and return its output.
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fn cargo_fmt(args: &[&str]) -> (String, String) {
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let mut bin_dir = env::current_exe().unwrap();
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bin_dir.pop(); // chop off test exe name
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if bin_dir.ends_with("deps") {
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bin_dir.pop();
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}
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let cmd = bin_dir.join(format!("cargo-fmt{}", env::consts::EXE_SUFFIX));
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// Ensure cargo-fmt runs the rustfmt binary from the local target dir.
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let path = env::var_os("PATH").unwrap_or_default();
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let mut paths = env::split_paths(&path).collect::<Vec<_>>();
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paths.insert(0, bin_dir);
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let new_path = env::join_paths(paths).unwrap();
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match Command::new(&cmd).args(args).env("PATH", new_path).output() {
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Ok(output) => (
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String::from_utf8(output.stdout).expect("utf-8"),
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String::from_utf8(output.stderr).expect("utf-8"),
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),
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Err(e) => panic!("failed to run `{:?} {:?}`: {}", cmd, args, e),
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}
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}
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macro_rules! assert_that {
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($args:expr, $check:ident $check_args:tt) => {
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let (stdout, stderr) = cargo_fmt($args);
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if !stdout.$check$check_args {
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panic!(
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"Output not expected for cargo-fmt {:?}\n\
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expected: {}{}\n\
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actual stdout:\n{}\n\
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actual stderr:\n{}",
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$args,
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stringify!($check),
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stringify!($check_args),
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stdout,
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stderr
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);
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}
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};
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}
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#[test]
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fn version() {
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assert_that!(&["--version"], starts_with("rustfmt "));
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assert_that!(&["--version"], starts_with("rustfmt "));
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assert_that!(&["--", "-V"], starts_with("rustfmt "));
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assert_that!(&["--", "--version"], starts_with("rustfmt "));
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}
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#[test]
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fn print_config() {
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assert_that!(
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&["--", "--print-config", "current", "."],
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contains("max_width = ")
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);
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}
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#[test]
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fn rustfmt_help() {
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assert_that!(&["--", "--help"], contains("Format Rust code"));
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assert_that!(&["--", "-h"], contains("Format Rust code"));
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assert_that!(&["--", "--help=config"], contains("Configuration Options:"));
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}
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