| // Integration tests for cargo-fmt. |
| |
| use std::env; |
| use std::path::Path; |
| use std::process::Command; |
| |
| use rustfmt_config_proc_macro::rustfmt_only_ci_test; |
| |
| /// Run the cargo-fmt executable and return its output. |
| fn cargo_fmt(args: &[&str]) -> (String, String) { |
| let mut bin_dir = env::current_exe().unwrap(); |
| bin_dir.pop(); // chop off test exe name |
| if bin_dir.ends_with("deps") { |
| bin_dir.pop(); |
| } |
| let cmd = bin_dir.join(format!("cargo-fmt{}", env::consts::EXE_SUFFIX)); |
| |
| // Ensure cargo-fmt runs the rustfmt binary from the local target dir. |
| let path = env::var_os("PATH").unwrap_or_default(); |
| let mut paths = env::split_paths(&path).collect::<Vec<_>>(); |
| paths.insert(0, bin_dir); |
| let new_path = env::join_paths(paths).unwrap(); |
| |
| match Command::new(&cmd).args(args).env("PATH", new_path).output() { |
| Ok(output) => ( |
| String::from_utf8(output.stdout).expect("utf-8"), |
| String::from_utf8(output.stderr).expect("utf-8"), |
| ), |
| Err(e) => panic!("failed to run `{cmd:?} {args:?}`: {e}"), |
| } |
| } |
| |
| macro_rules! assert_that { |
| ($args:expr, $check:ident $check_args:tt) => { |
| let (stdout, stderr) = cargo_fmt($args); |
| if !stdout.$check$check_args { |
| panic!( |
| "Output not expected for cargo-fmt {:?}\n\ |
| expected: {}{}\n\ |
| actual stdout:\n{}\n\ |
| actual stderr:\n{}", |
| $args, |
| stringify!($check), |
| stringify!($check_args), |
| stdout, |
| stderr |
| ); |
| } |
| }; |
| } |
| |
| #[rustfmt_only_ci_test] |
| #[test] |
| fn version() { |
| assert_that!(&["--version"], starts_with("rustfmt ")); |
| assert_that!(&["--version"], starts_with("rustfmt ")); |
| assert_that!(&["--", "-V"], starts_with("rustfmt ")); |
| assert_that!(&["--", "--version"], starts_with("rustfmt ")); |
| } |
| |
| #[rustfmt_only_ci_test] |
| #[test] |
| fn print_config() { |
| assert_that!( |
| &["--", "--print-config", "current", "."], |
| contains("max_width = ") |
| ); |
| } |
| |
| #[rustfmt_only_ci_test] |
| #[test] |
| fn rustfmt_help() { |
| assert_that!(&["--", "--help"], contains("Format Rust code")); |
| assert_that!(&["--", "-h"], contains("Format Rust code")); |
| assert_that!(&["--", "--help=config"], contains("Configuration Options:")); |
| } |
| |
| #[rustfmt_only_ci_test] |
| #[test] |
| fn cargo_fmt_out_of_line_test_modules() { |
| // See also https://github.com/rust-lang/rustfmt/issues/5119 |
| let expected_modified_files = [ |
| "tests/mod-resolver/test-submodule-issue-5119/src/lib.rs", |
| "tests/mod-resolver/test-submodule-issue-5119/tests/test1.rs", |
| "tests/mod-resolver/test-submodule-issue-5119/tests/test1/sub1.rs", |
| "tests/mod-resolver/test-submodule-issue-5119/tests/test1/sub2.rs", |
| "tests/mod-resolver/test-submodule-issue-5119/tests/test1/sub3/sub4.rs", |
| ]; |
| let args = [ |
| "-v", |
| "--check", |
| "--manifest-path", |
| "tests/mod-resolver/test-submodule-issue-5119/Cargo.toml", |
| ]; |
| let (stdout, _) = cargo_fmt(&args); |
| for file in expected_modified_files { |
| let path = Path::new(file).canonicalize().unwrap(); |
| assert!(stdout.contains(&format!("Diff in {}", path.display()))) |
| } |
| } |
| |
| #[rustfmt_only_ci_test] |
| #[test] |
| fn cargo_fmt_emits_error_on_line_overflow_true() { |
| // See also https://github.com/rust-lang/rustfmt/issues/3164 |
| let args = [ |
| "--check", |
| "--manifest-path", |
| "tests/cargo-fmt/source/issue_3164/Cargo.toml", |
| "--", |
| "--config", |
| "error_on_line_overflow=true", |
| ]; |
| |
| let (_stdout, stderr) = cargo_fmt(&args); |
| assert!(stderr.contains( |
| "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)" |
| )) |
| } |