Load schema before running Rails test (#912)

Co-authored-by: Aidan Haran <aharan@fusioneer.com>

Author: aidanharan

test/cases/coerced_tests.rb

@@ -78,23 +78,40 @@ def test_errors_when_an_insert_query_is_called_while_preventing_writes_coerced
       Subscriber.send(:load_schema!)
       original_test_errors_when_an_insert_query_is_called_while_preventing_writes
     end
+
+    # Fix randomly failing test. The loading of the model's schema was affecting the test.
+    coerce_tests! :test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_containing_read_command_is_called_while_preventing_writes
+    def test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_containing_read_command_is_called_while_preventing_writes_coerced
+      Subscriber.send(:load_schema!)
+      original_test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_containing_read_command_is_called_while_preventing_writes
+    end
+
+    # Fix randomly failing test. The loading of the model's schema was affecting the test.
+    coerce_tests! :test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes
+    def test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes_coerced
+      Subscriber.send(:load_schema!)
+      original_test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes
+    end
   end
 end
 
 module ActiveRecord
   class AdapterPreventWritesLegacyTest < ActiveRecord::TestCase
-    # We do some read queries. Remove assert_no_queries
+    # Fix randomly failing test. The loading of the model's schema was affecting the test.
     coerce_tests! :test_errors_when_an_insert_query_prefixed_by_a_slash_star_comment_is_called_while_preventing_writes
     def test_errors_when_an_insert_query_prefixed_by_a_slash_star_comment_is_called_while_preventing_writes_coerced
-      @connection_handler.while_preventing_writes do
-        @connection.transaction do
-          assert_raises(ActiveRecord::ReadOnlyError) do
-            @connection.insert("/* some comment */ INSERT INTO subscribers(nick) VALUES ('138853948594')", nil, false)
-          end
-        end
-      end
+      Subscriber.send(:load_schema!)
+      original_test_errors_when_an_insert_query_prefixed_by_a_slash_star_comment_is_called_while_preventing_writes
     end
 
+    # Fix randomly failing test. The loading of the model's schema was affecting the test.
+    coerce_tests! :test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes
+    def test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes_coerced
+      Subscriber.send(:load_schema!)
+      original_test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_is_called_while_preventing_writes
+    end
+
+    # Fix randomly failing test. The loading of the model's schema was affecting the test.
     coerce_tests! :test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_containing_read_command_is_called_while_preventing_writes
     def test_errors_when_an_insert_query_prefixed_by_a_double_dash_comment_containing_read_command_is_called_while_preventing_writes_coerced
       Subscriber.send(:load_schema!)