2 files changed, 5 insertions, 5 deletions
diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb
index 38cf0a2346..6dcd62572a 100644
--- a/actionpack/test/dispatch/cookies_test.rb
+++ b/actionpack/test/dispatch/cookies_test.rb
@@ -68,7 +68,7 @@ class CookieJarTest < ActiveSupport::TestCase
   def test_write_doesnt_set_a_nil_header
     headers = {}
     request.cookie_jar.write(headers)
-    assert !headers.include?("Set-Cookie")
+    assert_not_includes headers, "Set-Cookie"
   end
 end
 
@@ -1115,11 +1115,11 @@ class CookiesTest < ActionController::TestCase
     assert_equal "david", cookies[:user_name]
 
     get :noop
-    assert !@response.headers.include?("Set-Cookie")
+    assert_not_includes @response.headers, "Set-Cookie"
     assert_equal "david", cookies[:user_name]
 
     get :noop
-    assert !@response.headers.include?("Set-Cookie")
+    assert_not_includes @response.headers, "Set-Cookie"
     assert_equal "david", cookies[:user_name]
   end
 
diff --git a/actionpack/test/dispatch/header_test.rb b/actionpack/test/dispatch/header_test.rb
index 374e618b42..6febd5cb68 100644
--- a/actionpack/test/dispatch/header_test.rb
+++ b/actionpack/test/dispatch/header_test.rb
@@ -76,9 +76,9 @@ class HeaderTest < ActiveSupport::TestCase
 
   test "key?" do
     assert @headers.key?("CONTENT_TYPE")
-    assert @headers.include?("CONTENT_TYPE")
+    assert_includes @headers, "CONTENT_TYPE"
     assert @headers.key?("Content-Type")
-    assert @headers.include?("Content-Type")
+    assert_includes @headers, "Content-Type"
   end
 
   test "fetch with block" do