Generate deprecated lints test

1 files changed, 12 insertions, 0 deletions

diff --git a/clippy_dev/src/update_lints.rs b/clippy_dev/src/update_lints.rs
index 4e48b670457..b010149626c 100644
--- a/clippy_dev/src/update_lints.rs
+++ b/clippy_dev/src/update_lints.rs
@@ -107,6 +107,9 @@ pub fn run(update_mode: UpdateMode) {
             &content,
         );
     }
+
+    let content = gen_deprecated_lints_test(&deprecated_lints);
+    process_file("tests/ui/deprecated.rs", update_mode, &content);
 }
 
 pub fn print_lints() {
@@ -276,6 +279,15 @@ fn gen_register_lint_list<'a>(
     output
 }
 
+fn gen_deprecated_lints_test(lints: &[DeprecatedLint]) -> String {
+    let mut res: String = GENERATED_FILE_COMMENT.into();
+    for lint in lints {
+        writeln!(res, "#![warn(clippy::{})]", lint.name).unwrap();
+    }
+    res.push_str("\nfn main() {}\n");
+    res
+}
+
 /// Gathers all lints defined in `clippy_lints/src`
 fn gather_all() -> (Vec<Lint>, Vec<DeprecatedLint>) {
     let mut lints = Vec::with_capacity(1000);