23 // Run `rustfmt` on the given source string and return a tuple of the formatted
24 // bindings, and rustfmt's stderr.
25 fn rustfmt(source: String) -> (String, String) {  in rustfmt()  function
29         if env::var_os("RUSTFMT").is_some() {  in rustfmt()
33         let mut rustfmt = {  in rustfmt()  localVariable
35             p.args(["run", "nightly", "rustfmt", "--version"]);  in rustfmt()
39         let have_working_rustfmt = rustfmt  in rustfmt()
49 The latest `rustfmt` is required to run the `bindgen` test suite. Install  in rustfmt()
50 `rustfmt` with:  in rustfmt()
53     $ rustup component add rustfmt --toolchain nightly  in rustfmt()
59     let mut child = match env::var_os("RUSTFMT") {  in rustfmt()
63             p.args(["run", "nightly", "rustfmt"]);  in rustfmt()
71             concat!(env!("CARGO_MANIFEST_DIR"), "/tests/rustfmt.toml"),  in rustfmt()
77         .expect("should spawn `rustup run nightly rustfmt`");  in rustfmt()
99     // Ignore actual rustfmt status because it is often non-zero for trivial  in rustfmt()
101     let _ = child.wait().expect("should wait on rustfmt child OK");  in rustfmt()
106         .expect("should have written to child rustfmt's stdin OK");  in rustfmt()
109         .expect("rustfmt should only emit valid utf-8");  in rustfmt()
114         .expect("should have read child rustfmt's stderr OK");  in rustfmt()
253             rustfmt(actual)  in compare_generated_header()
259     let (expected, rustfmt_stderr) = rustfmt(expected);  in compare_generated_header()
386         "--no-rustfmt-bindings",  in create_bindgen_builder()
454     let (actual, stderr) = rustfmt(actual);  in test_clang_env_args()
457     let (expected, _) = rustfmt(  in test_clang_env_args()
481     let (actual, stderr) = rustfmt(actual);  in test_header_contents()
484     let (expected, _) = rustfmt(  in test_header_contents()
508     let (actual, stderr) = rustfmt(actual);  in test_multiple_header_calls_in_builder()
519     let (expected, _) = rustfmt(expected.to_string());  in test_multiple_header_calls_in_builder()
543     let (actual, stderr) = rustfmt(actual);  in test_multiple_header_contents()
546     let (expected, _) = rustfmt(  in test_multiple_header_contents()
575     let (actual, stderr) = rustfmt(actual);  in test_mixed_header_and_header_contents()
586     let (expected, _) = rustfmt(expected.to_string());  in test_mixed_header_and_header_contents()