diff --git a/activerecord/test/cases/adapters/postgresql/bytea_test.rb b/activerecord/test/cases/adapters/postgresql/bytea_test.rb
index 489efac932..b8dd35c4c5 100644
--- a/activerecord/test/cases/adapters/postgresql/bytea_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/bytea_test.rb
@@ -66,7 +66,7 @@ class PostgresqlByteaTest < ActiveRecord::TestCase
   def test_write_value
     data = "\u001F"
     record = ByteaDataType.create(payload: data)
-    refute record.new_record?
+    assert_not record.new_record?
     assert_equal(data, record.payload)
   end
 
@@ -74,14 +74,14 @@ class PostgresqlByteaTest < ActiveRecord::TestCase
     data = File.read(File.join(File.dirname(__FILE__), '..', '..', '..', 'assets', 'example.log'))
     assert(data.size > 1)
     record = ByteaDataType.create(payload: data)
-    refute record.new_record?
+    assert_not record.new_record?
     assert_equal(data, record.payload)
     assert_equal(data, ByteaDataType.where(id: record.id).first.payload)
   end
 
   def test_write_nil
     record = ByteaDataType.create(payload: nil)
-    refute record.new_record?
+    assert_not record.new_record?
     assert_equal(nil, record.payload)
     assert_equal(nil, ByteaDataType.where(id: record.id).first.payload)
   end
diff --git a/activerecord/test/cases/associations/inverse_associations_test.rb b/activerecord/test/cases/associations/inverse_associations_test.rb
index 71cf1237e8..ce78332124 100644
--- a/activerecord/test/cases/associations/inverse_associations_test.rb
+++ b/activerecord/test/cases/associations/inverse_associations_test.rb
@@ -406,7 +406,7 @@ class InverseHasManyTests < ActiveRecord::TestCase
     interest = Interest.create!(man: man)
 
     man.interests.find(interest.id)
-    refute man.interests.loaded?
+    assert_not man.interests.loaded?
   end
 
   def test_raise_record_not_found_error_when_invalid_ids_are_passed