Make tidy check for magic numbers that spell things

[rust.git] / tests / fmt.rs

diff --git a/tests/fmt.rs b/tests/fmt.rs
index 47be4ec125b729626ca8982cdb0077e718b74a86..383702dd439cfb46acbd9c26f516adfab5d4d61c 100644 (file)
--- a/tests/fmt.rs
+++ b/tests/fmt.rs
@@ -1,14 +1,27 @@
+#![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() {
+    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"]).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 = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"));
-    let dev_dir = root_dir.join("clippy_dev");
-    let output = std::process::Command::new("cargo")
-        .current_dir(dev_dir)
-        .args(&["run", "--", "fmt", "--check"])
+    let root_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    let output = Command::new("cargo")
+        .current_dir(root_dir)
+        .args(&["dev", "fmt", "--check"])
         .output()
         .unwrap();
 
@@ -18,6 +31,6 @@ fn fmt() {
 
     assert!(
         output.status.success(),
-        "Formatting check failed. Run `./util/dev fmt` to update formatting."
+        "Formatting check failed. Run `cargo dev fmt` to update formatting."
     );
 }