108 lines
3 KiB
Rust
108 lines
3 KiB
Rust
//! Integration tests for rustfmt.
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use std::env;
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use std::fs::remove_file;
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use std::path::Path;
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use std::process::Command;
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/// Run the rustfmt executable and return its output.
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fn rustfmt(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!("rustfmt{}", env::consts::EXE_SUFFIX));
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// Ensure the rustfmt binary runs 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 $check_args:tt)&&+) => {
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let (stdout, stderr) = rustfmt($args);
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if $(!stdout.$check$check_args && !stderr.$check$check_args)||* {
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panic!(
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"Output not expected for rustfmt {:?}\n\
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expected: {}\n\
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actual stdout:\n{}\n\
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actual stderr:\n{}",
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$args,
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stringify!($( $check$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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#[ignore]
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#[test]
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fn print_config() {
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assert_that!(
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&["--print-config", "unknown"],
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starts_with("Unknown print-config option")
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);
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assert_that!(&["--print-config", "default"], contains("max_width = 100"));
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assert_that!(&["--print-config", "minimal"], contains("PATH required"));
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assert_that!(
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&["--print-config", "minimal", "minimal-config"],
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contains("doesn't work with standard input.")
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);
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let (stdout, stderr) = rustfmt(&[
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"--print-config",
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"minimal",
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"minimal-config",
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"src/shape.rs",
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]);
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assert!(
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Path::new("minimal-config").exists(),
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"stdout:\n{}\nstderr:\n{}",
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stdout,
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stderr
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);
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remove_file("minimal-config").unwrap();
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}
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#[ignore]
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#[test]
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fn inline_config() {
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// single invocation
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assert_that!(
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&[
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"--print-config",
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"current",
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".",
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"--config=color=Never,edition=2018"
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],
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contains("color = \"Never\"") && contains("edition = \"2018\"")
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);
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// multiple overriding invocations
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assert_that!(
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&[
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"--print-config",
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"current",
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".",
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"--config",
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"color=never,edition=2018",
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"--config",
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"color=always,format_strings=true"
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],
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contains("color = \"Always\"")
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&& contains("edition = \"2018\"")
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&& contains("format_strings = true")
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);
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}
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