2 files changed, 11 insertions, 3 deletions
diff --git a/activerecord/test/cases/connection_adapters/connection_handlers_multi_db_test.rb b/activerecord/test/cases/connection_adapters/connection_handlers_multi_db_test.rb
index 865aacc1b5..8988755d24 100644
--- a/activerecord/test/cases/connection_adapters/connection_handlers_multi_db_test.rb
+++ b/activerecord/test/cases/connection_adapters/connection_handlers_multi_db_test.rb
@@ -336,13 +336,13 @@ module ActiveRecord
       end
 
       def test_calling_connected_to_on_a_non_existent_handler_raises
-        error = assert_raises ArgumentError do
+        error = assert_raises ActiveRecord::ConnectionNotEstablished do
           ActiveRecord::Base.connected_to(role: :reading) do
-            yield
+            Person.first
           end
         end
 
-        assert_equal "The reading role does not exist. Add it by establishing a connection with `connects_to` or use an existing role (writing).", error.message
+        assert_equal "No connection pool with 'primary' found for the 'reading' role.", error.message
       end
     end
   end
diff --git a/activerecord/test/cases/unconnected_test.rb b/activerecord/test/cases/unconnected_test.rb
index 9eefc32745..f0a0e7f805 100644
--- a/activerecord/test/cases/unconnected_test.rb
+++ b/activerecord/test/cases/unconnected_test.rb
@@ -29,6 +29,14 @@ class TestUnconnectedAdapter < ActiveRecord::TestCase
     end
   end
 
+  def test_error_message_when_connection_not_established
+    error = assert_raise(ActiveRecord::ConnectionNotEstablished) do
+      TestRecord.find(1)
+    end
+
+    assert_equal "No connection pool with 'primary' found.", error.message
+  end
+
   def test_underlying_adapter_no_longer_active
     assert_not @underlying.active?, "Removed adapter should no longer be active"
   end