From 829177b50921ae6f8852c0e9ec1369f5dbd09246 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 2 Dec 2020 15:36:35 +0900
Subject: [PATCH] Remove deprecated DBM#index

---
 stdlib/dbm/0/dbm.rbs    | 2 --
 test/stdlib/DBM_test.rb | 6 ------
 2 files changed, 8 deletions(-)

diff --git a/stdlib/dbm/0/dbm.rbs b/stdlib/dbm/0/dbm.rbs
index 78c5517e2..3dc588d3a 100644
--- a/stdlib/dbm/0/dbm.rbs
+++ b/stdlib/dbm/0/dbm.rbs
@@ -138,8 +138,6 @@ class DBM
   #
   def include?: (String) -> bool
 
-  def index: (untyped) -> (String | NilClass)
-
   # Returns a Hash (not a DBM database) created by using each value in the
   # database as a key, with the corresponding key as its value.
   #
diff --git a/test/stdlib/DBM_test.rb b/test/stdlib/DBM_test.rb
index 023d762c2..c7bc42aed 100644
--- a/test/stdlib/DBM_test.rb
+++ b/test/stdlib/DBM_test.rb
@@ -80,12 +80,6 @@ def test_invert
     assert_send_type "() -> Hash[untyped, String]", @dbm, :invert
   end
 
-  def test_index
-    @dbm["key3"] = 1
-    assert_send_type "(untyped) -> (String | NilClass)", @dbm, :index, "key1"
-    assert_send_type "(untyped) -> (String | NilClass)", @dbm, :index, "keaaaay1"
-  end
-
   def test_key
     @dbm["key_key"] = 1
     assert_send_type "(untyped) -> (String | NilClass)", @dbm, :key, "key_key"