Deprecate `active_support/core_ext/hash/compact`

Ruby 2.4+ provides `Hash#compact` and `Hash#compact!` natively,
so `active_support/core_ext/hash/compact` is no longer necessary.

1 files changed, 4 insertions, 34 deletions

diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 50b811e79f..f4f0dd6b31 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -45,8 +45,6 @@ class HashExtTest < ActiveSupport::TestCase
     assert_respond_to h, :deep_stringify_keys!
     assert_respond_to h, :to_options
     assert_respond_to h, :to_options!
-    assert_respond_to h, :compact
-    assert_respond_to h, :compact!
     assert_respond_to h, :except
     assert_respond_to h, :except!
   end
@@ -456,38 +454,10 @@ class HashExtTest < ActiveSupport::TestCase
     end
   end
 
-  def test_compact
-    hash_contain_nil_value = @symbols.merge(z: nil)
-    hash_with_only_nil_values = { a: nil, b: nil }
-
-    h = hash_contain_nil_value.dup
-    assert_equal(@symbols, h.compact)
-    assert_equal(hash_contain_nil_value, h)
-
-    h = hash_with_only_nil_values.dup
-    assert_equal({}, h.compact)
-    assert_equal(hash_with_only_nil_values, h)
-
-    h = @symbols.dup
-    assert_equal(@symbols, h.compact)
-    assert_equal(@symbols, h)
-  end
-
-  def test_compact!
-    hash_contain_nil_value = @symbols.merge(z: nil)
-    hash_with_only_nil_values = { a: nil, b: nil }
-
-    h = hash_contain_nil_value.dup
-    assert_equal(@symbols, h.compact!)
-    assert_equal(@symbols, h)
-
-    h = hash_with_only_nil_values.dup
-    assert_equal({}, h.compact!)
-    assert_equal({}, h)
-
-    h = @symbols.dup
-    assert_nil(h.compact!)
-    assert_equal(@symbols, h)
+  def test_requiring_compact_is_deprecated
+    assert_deprecated do
+      require "active_support/core_ext/hash/compact"
+    end
   end
 end