From c8851500bf8ebe33899e440e7441f15a68181998 Mon Sep 17 00:00:00 2001
From: Liam Miller-Cushon <cushon@google.com>
Date: Thu, 26 Sep 2024 18:37:57 -0700
Subject: [PATCH] Add a regression test for b/369862572

PiperOrigin-RevId: 679372973
---
 .../google/errorprone/bugpatterns/MemberName.java   |  3 ++-
 .../errorprone/bugpatterns/MemberNameTest.java      | 13 +++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/com/google/errorprone/bugpatterns/MemberName.java b/core/src/main/java/com/google/errorprone/bugpatterns/MemberName.java
index 19e60c1734c..6698875f0d7 100644
--- a/core/src/main/java/com/google/errorprone/bugpatterns/MemberName.java
+++ b/core/src/main/java/com/google/errorprone/bugpatterns/MemberName.java
@@ -102,7 +102,8 @@ public Description matchClass(ClassTree tree, VisitorState state) {
     ClassSymbol symbol = getSymbol(tree);
     String name = tree.getSimpleName().toString();
     if (name.isEmpty() || isConformantUpperCamelName(name)) {
-      // name.isEmpty() should not happen normally but could if there are errors.
+      // The name can be empty for enum member declarations, which are desugared early to class
+      // declarations.
       return NO_MATCH;
     }
     String renamed = suggestedClassRename(name);
diff --git a/core/src/test/java/com/google/errorprone/bugpatterns/MemberNameTest.java b/core/src/test/java/com/google/errorprone/bugpatterns/MemberNameTest.java
index 0b60ab6402b..509d93dcbf4 100644
--- a/core/src/test/java/com/google/errorprone/bugpatterns/MemberNameTest.java
+++ b/core/src/test/java/com/google/errorprone/bugpatterns/MemberNameTest.java
@@ -622,4 +622,17 @@ public void className_underscore() {
             "}")
         .doTest();
   }
+
+  @Test
+  public void enumName() {
+    helper
+        .addSourceLines(
+            "Test.java", //
+            "enum Test {",
+            "  ONE {",
+            "    void f() {}",
+            "  }",
+            "}")
+        .doTest();
+  }
 }