From bfae2634b496caa54f38f4c22d285c5fc1dad190 Mon Sep 17 00:00:00 2001
From: unexge <unexge@gmail.com>
Date: Wed, 23 Dec 2020 22:18:31 +0300
Subject: Prevent multiple incorrect case diagnostics in functions

---
 crates/ide/src/diagnostics.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'crates/ide/src/diagnostics.rs')

diff --git a/crates/ide/src/diagnostics.rs b/crates/ide/src/diagnostics.rs
index 3ad30f0c9..b2714cb69 100644
--- a/crates/ide/src/diagnostics.rs
+++ b/crates/ide/src/diagnostics.rs
@@ -895,4 +895,17 @@ impl TestStruct {
 "#,
         );
     }
+
+    #[test]
+    fn test_single_incorrect_case_diagnostic_in_function_name_issue_6970() {
+        let input = r#"fn FOO<|>() {}"#;
+        let expected = r#"fn foo() {}"#;
+
+        let (analysis, file_position) = fixture::position(input);
+        let diagnostics =
+            analysis.diagnostics(&DiagnosticsConfig::default(), file_position.file_id).unwrap();
+        assert_eq!(diagnostics.len(), 1);
+
+        check_fixes(input, expected);
+    }
 }
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