2 files changed, 4 insertions, 4 deletions
diff --git a/actionmailer/test/base_test.rb b/actionmailer/test/base_test.rb
index ac90809518..4124aa00bd 100644
--- a/actionmailer/test/base_test.rb
+++ b/actionmailer/test/base_test.rb
@@ -506,8 +506,8 @@ class BaseTest < ActiveSupport::TestCase
   test "should respond to action methods" do
     assert_respond_to BaseMailer, :welcome
     assert_respond_to BaseMailer, :implicit_multipart
-    assert !BaseMailer.respond_to?(:mail)
-    assert !BaseMailer.respond_to?(:headers)
+    assert_not_respond_to BaseMailer, :mail
+    assert_not_respond_to BaseMailer, :headers
   end
 
   test "calling just the action should return the generated mail object" do
diff --git a/actionmailer/test/caching_test.rb b/actionmailer/test/caching_test.rb
index ae4e7bf57e..574840c30e 100644
--- a/actionmailer/test/caching_test.rb
+++ b/actionmailer/test/caching_test.rb
@@ -105,7 +105,7 @@ class FragmentCachingTest < BaseCachingTest
 
     html_safe = @mailer.read_fragment("name")
     assert_equal content, html_safe
-    assert html_safe.html_safe?
+    assert_predicate html_safe, :html_safe?
   end
 end
 
@@ -262,7 +262,7 @@ class ViewCacheDependencyTest < BaseCachingTest
   end
 
   def test_view_cache_dependencies_are_empty_by_default
-    assert NoDependenciesMailer.new.view_cache_dependencies.empty?
+    assert_empty NoDependenciesMailer.new.view_cache_dependencies
   end
 
   def test_view_cache_dependencies_are_listed_in_declaration_order