1 files changed, 19 insertions, 2 deletions
diff --git a/src/tools/rustfmt/tests/rustfmt/main.rs b/src/tools/rustfmt/tests/rustfmt/main.rs
index 4c6d52726..7ff301e80 100644
--- a/src/tools/rustfmt/tests/rustfmt/main.rs
+++ b/src/tools/rustfmt/tests/rustfmt/main.rs
@@ -5,6 +5,8 @@ use std::fs::remove_file;
 use std::path::Path;
 use std::process::Command;
 
+use rustfmt_config_proc_macro::rustfmt_only_ci_test;
+
 /// Run the rustfmt executable and return its output.
 fn rustfmt(args: &[&str]) -> (String, String) {
     let mut bin_dir = env::current_exe().unwrap();
@@ -47,7 +49,7 @@ macro_rules! assert_that {
     };
 }
 
-#[ignore]
+#[rustfmt_only_ci_test]
 #[test]
 fn print_config() {
     assert_that!(
@@ -76,7 +78,7 @@ fn print_config() {
     remove_file("minimal-config").unwrap();
 }
 
-#[ignore]
+#[rustfmt_only_ci_test]
 #[test]
 fn inline_config() {
     // single invocation
@@ -157,3 +159,18 @@ fn mod_resolution_error_path_attribute_does_not_exist() {
     // The path attribute points to a file that does not exist
     assert!(stderr.contains("does_not_exist.rs does not exist"));
 }
+
+#[test]
+fn rustfmt_emits_error_on_line_overflow_true() {
+    // See also https://github.com/rust-lang/rustfmt/issues/3164
+    let args = [
+        "--config",
+        "error_on_line_overflow=true",
+        "tests/cargo-fmt/source/issue_3164/src/main.rs",
+    ];
+
+    let (_stdout, stderr) = rustfmt(&args);
+    assert!(stderr.contains(
+        "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)"
+    ))
+}