diff --git a/test/integration/instrumentation_test.rb b/test/integration/instrumentation_test.rb
index 118585b..9e5f69c 100644
--- a/test/integration/instrumentation_test.rb
+++ b/test/integration/instrumentation_test.rb
@@ -6,12 +6,12 @@ class InstrumentationTest < IntegrationTest
       visit "/login"
     end
 
-    assert_match /Processing by RodauthController#login as HTML/, logged
-    refute_match /Parameters/, logged
+    assert_match(/Processing by RodauthController#login as HTML/, logged)
+    refute_match(/Parameters/, logged)
     if ::Rails.gem_version >= Gem::Version.new("6.0")
-      assert_match /Completed 200 OK in \d+ms \(Views: \d+ms | ActiveRecord: \d+\.\d+ms | Allocations: \d+\)/, logged
+      assert_match(/Completed 200 OK in \d+ms \(Views: \d+ms | ActiveRecord: \d+\.\d+ms | Allocations: \d+\)/, logged)
     else
-      assert_match /Completed 200 OK in \d+ms \(Views: \d+ms | ActiveRecord: \d+\.\d+ms\)/, logged
+      assert_match(/Completed 200 OK in \d+ms \(Views: \d+ms | ActiveRecord: \d+\.\d+ms\)/, logged)
     end
   end
 
@@ -22,9 +22,9 @@ class InstrumentationTest < IntegrationTest
         { "CONTENT_TYPE" => "application/json", "HTTP_ACCEPT" => "application/json" }
     end
 
-    assert_match /Processing by ActionController::API#login as JSON/, logged
-    assert_match /Parameters: {"login"=>"user@example\.com", "password"=>"secret"}/, logged
-    assert_match /Completed 401 Unauthorized/, logged
+    assert_match(/Processing by ActionController::API#login as JSON/, logged)
+    assert_match(/Parameters: {"login" ?=> ?"user@example\.com", "password" ?=> ?"secret"}/, logged)
+    assert_match(/Completed 401 Unauthorized/, logged)
   end
 
   test "logs redirects" do
@@ -32,9 +32,9 @@ class InstrumentationTest < IntegrationTest
       visit "/change-password"
     end
 
-    assert_match /Processing by RodauthController#change_password as HTML/, logged
-    assert_match /Redirected to \/login/, logged
-    assert_match /Completed 302 Found/, logged
+    assert_match(/Processing by RodauthController#change_password as HTML/, logged)
+    assert_match(/Redirected to \/login/, logged)
+    assert_match(/Completed 302 Found/, logged)
   end
 
   test "handles early response via callback" do
@@ -42,8 +42,8 @@ class InstrumentationTest < IntegrationTest
       visit "/login?early_return=true"
     end
 
-    assert_match /Processing by RodauthController#login as HTML/, logged
-    assert_match /Completed 201 Created in \d+ms/, logged
+    assert_match(/Processing by RodauthController#login as HTML/, logged)
+    assert_match(/Completed 201 Created in \d+ms/, logged)
   end
 
   test "logs response status when redirecting inside controller" do
@@ -51,7 +51,7 @@ class InstrumentationTest < IntegrationTest
       visit "/auth2"
     end
 
-    assert_match /Completed 302 Found/, logged
+    assert_match(/Completed 302 Found/, logged)
   end
 
   test "logs response status when halting inside controller" do
@@ -59,7 +59,7 @@ class InstrumentationTest < IntegrationTest
       visit "/auth_json"
     end
 
-    assert_match /Completed 401 Unauthorized/, logged
+    assert_match(/Completed 401 Unauthorized/, logged)
   end
 
   private
diff --git a/test/test_helper.rb b/test/test_helper.rb
index e472bb7..10cc02f 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,7 +1,6 @@
 ENV["RAILS_ENV"] = "test"
 
 require "warning"
-Warning.ignore(:ambiguous_slash, __dir__)
 Gem.path.each { |path| Warning.ignore(//, path) } # ignore warnings in dependencies
 
 require "bundler/setup"