2 files changed, 4 insertions, 71 deletions
diff --git a/activesupport/test/core_ext/array/prepend_append_test.rb b/activesupport/test/core_ext/array/prepend_append_test.rb
index c34acd66ad..8573dbd5a6 100644
--- a/activesupport/test/core_ext/array/prepend_append_test.rb
+++ b/activesupport/test/core_ext/array/prepend_append_test.rb
@@ -1,14 +1,11 @@
 # frozen_string_literal: true
 
 require "abstract_unit"
-require "active_support/core_ext/array"
 
 class PrependAppendTest < ActiveSupport::TestCase
-  def test_append
-    assert_equal [1, 2], [1].append(2)
-  end
-
-  def test_prepend
-    assert_equal [2, 1], [1].prepend(2)
+  def test_requiring_prepend_and_append_is_deprecated
+    assert_deprecated do
+      require "active_support/core_ext/array/prepend_and_append"
+    end
   end
 end
diff --git a/activesupport/test/core_ext/hash/transform_keys_test.rb b/activesupport/test/core_ext/hash/transform_keys_test.rb
deleted file mode 100644
index b9e41f7b25..0000000000
--- a/activesupport/test/core_ext/hash/transform_keys_test.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-# frozen_string_literal: true
-
-require "abstract_unit"
-require "active_support/core_ext/hash/keys"
-
-class TransformKeysTest < ActiveSupport::TestCase
-  test "transform_keys returns a new hash with the keys computed from the block" do
-    original = { a: "a", b: "b" }
-    mapped = original.transform_keys { |k| "#{k}!".to_sym }
-
-    assert_equal({ a: "a", b: "b" }, original)
-    assert_equal({ a!: "a", b!: "b" }, mapped)
-  end
-
-  test "transform_keys! modifies the keys of the original" do
-    original = { a: "a", b: "b" }
-    mapped = original.transform_keys! { |k| "#{k}!".to_sym }
-
-    assert_equal({ a!: "a", b!: "b" }, original)
-    assert_same original, mapped
-  end
-
-  test "transform_keys returns a sized Enumerator if no block is given" do
-    original = { a: "a", b: "b" }
-    enumerator = original.transform_keys
-    assert_equal original.size, enumerator.size
-    assert_equal Enumerator, enumerator.class
-  end
-
-  test "transform_keys! returns a sized Enumerator if no block is given" do
-    original = { a: "a", b: "b" }
-    enumerator = original.transform_keys!
-    assert_equal original.size, enumerator.size
-    assert_equal Enumerator, enumerator.class
-  end
-
-  test "transform_keys is chainable with Enumerable methods" do
-    original = { a: "a", b: "b" }
-    mapped = original.transform_keys.with_index { |k, i| [k, i].join.to_sym }
-    assert_equal({ a0: "a", b1: "b" }, mapped)
-  end
-
-  test "transform_keys! is chainable with Enumerable methods" do
-    original = { a: "a", b: "b" }
-    original.transform_keys!.with_index { |k, i| [k, i].join.to_sym }
-    assert_equal({ a0: "a", b1: "b" }, original)
-  end
-
-  test "transform_keys returns a Hash instance when self is inherited from Hash" do
-    class HashDescendant < ::Hash
-      def initialize(elements = nil)
-        super(elements)
-        (elements || {}).each_pair { |key, value| self[key] = value }
-      end
-    end
-
-    original = HashDescendant.new(a: "a", b: "b")
-    mapped = original.transform_keys { |k| "#{k}!".to_sym }
-
-    assert_equal({ a: "a", b: "b" }, original)
-    assert_equal({ a!: "a", b!: "b" }, mapped)
-    assert_equal(::Hash, mapped.class)
-  end
-end