More Mysql2 adapter fixes to support prepared statements

Followup: rails#53702

- Changed Mysql2 type_cast method to also coerce raw Time values.
- Cleaned up some tests.
- Improved the logic around when to skip using a prepared statement.

activerecord/lib/active_record/connection_adapters/mysql/quoting.rb

@@ -102,7 +102,13 @@ def type_cast(value) # :nodoc:
             else
               value.getlocal
             end
-          when Date, Time
+          when Time
+            if default_timezone == :utc
+              value.utc? ? value : value.getutc
+            else
+              value.utc? ? value.getlocal : value
+            end
+          when Date
             value
           else
             super

activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb

@@ -48,7 +48,7 @@ def perform_query(raw_connection, sql, binds, type_casted_binds, prepare:, notif
             # made since we established the connection
             raw_connection.query_options[:database_timezone] = default_timezone
 
-            result = if !prepared_statements || binds.nil? || binds.empty?
+            result = if binds.nil? || binds.empty?
               ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
                 result = raw_connection.query(sql)
                 @affected_rows_before_warnings = raw_connection.affected_rows
@@ -74,14 +74,15 @@ def perform_query(raw_connection, sql, binds, type_casted_binds, prepare:, notif
                 else
                   stmt.close
                 end
+
                 raise
               end
+
               verified!
 
               result
             end
 
-
             notification_payload[:affected_rows] = @affected_rows_before_warnings
             notification_payload[:row_count] = result&.size || 0
 

activerecord/test/cases/adapters/postgresql/quoting_test.rb

@@ -29,15 +29,15 @@ def test_quote_float_infinity
           assert_equal "'Infinity'", @conn.quote(infinity)
         end
 
-        def test_cast_bound_integer
+        def test_quote_integer
           assert_equal "42", @conn.quote(42)
         end
 
-        def test_cast_bound_big_decimal
+        def test_quote_big_decimal
           assert_equal "4.2", @conn.quote(BigDecimal("4.2"))
         end
 
-        def test_cast_bound_rational
+        def test_quote_rational
           assert_equal "3/4", @conn.quote(Rational(3, 4))
         end
 

activerecord/test/cases/bind_parameter_test.rb

@@ -238,10 +238,11 @@ def assert_bind_params_to_sql
           #
           #   SELECT `authors`.* FROM `authors` WHERE `authors`.`id` IN (1, 2, 3)
           #
-          if current_adapter?(:Mysql2Adapter)
-            params = bind_params((1..3).map(&:to_s))
+          params = if current_adapter?(:Mysql2Adapter, :TrilogyAdapter)
+            # With MySQL integers are casted as string for security.
+            bind_params((1..3).map(&:to_s))
           else
-            params = bind_params(1..3)
+            bind_params(1..3)
           end
 
           sql = "SELECT #{table}.* FROM #{table} WHERE #{pk} IN (#{params})"

activerecord/test/cases/explain_test.rb

@@ -89,24 +89,22 @@ def test_relation_explain_with_sum
       assert_match(expected_query, message)
     end
 
-    unless current_adapter?(:Mysql2Adapter) && ActiveRecord::Base.lease_connection.prepared_statements
-      def test_relation_explain_with_first
-        expected_query = capture_sql {
-          Car.all.first
-        }.first
-        message = Car.all.explain.first
-        assert_match(/^EXPLAIN/, message)
-        assert_match(expected_query, message)
-      end
+    def test_relation_explain_with_first
+      expected_query = capture_sql {
+        Car.all.first
+      }.first
+      message = Car.all.explain.first
+      assert_match(/^EXPLAIN/, message)
+      assert_match(expected_query.sub(/LIMIT.*/, ""), message)
+    end
 
-      def test_relation_explain_with_last
-        expected_query = capture_sql {
-          Car.all.last
-        }.first
-        message = Car.all.explain.last
-        assert_match(/^EXPLAIN/, message)
-        assert_match(expected_query, message)
-      end
+    def test_relation_explain_with_last
+      expected_query = capture_sql {
+        Car.all.last
+      }.first
+      message = Car.all.explain.last
+      assert_match(/^EXPLAIN/, message)
+      assert_match(expected_query.sub(/LIMIT.*/, ""), message)
     end
 
     def test_relation_explain_with_pluck

activerecord/test/cases/finder_test.rb

@@ -1406,7 +1406,7 @@ def test_condition_utc_time_interpolation_with_default_timezone_local
     with_env_tz "America/New_York" do
       with_timezone_config default: :local do
         topic = Topic.first
-        assert_equal topic, Topic.where(["written_on = ?", topic.written_on]).first
+        assert_equal topic, Topic.where(["written_on = ?", topic.written_on.getutc]).first
       end
     end
   end
@@ -1424,7 +1424,7 @@ def test_condition_local_time_interpolation_with_default_timezone_utc
     with_env_tz "America/New_York" do
       with_timezone_config default: :utc do
         topic = Topic.first
-        assert_equal topic, Topic.where(["written_on = ?", topic.written_on]).first
+        assert_equal topic, Topic.where(["written_on = ?", topic.written_on.getlocal]).first
       end
     end
   end

activerecord/test/cases/insert_all_test.rb

@@ -787,7 +787,7 @@ def test_upsert_all_updates_using_provided_sql
     assert_equal "written", Book.find(2).status
   end
 
-  if current_adapter?(:Mysql2Adapter) || current_adapter?(:TrilogyAdapter)
+  if current_adapter?(:Mysql2Adapter, :TrilogyAdapter)
     def test_upsert_all_updates_using_values_function_on_duplicate_raw_sql
       skip unless supports_insert_on_duplicate_update?
 

activerecord/test/cases/test_case.rb

@@ -308,7 +308,7 @@ def self.run(*args)
 
   class AbstractMysqlTestCase < TestCase
     def self.run(*args)
-      super if current_adapter?(:Mysql2Adapter) || current_adapter?(:TrilogyAdapter)
+      super if current_adapter?(:Mysql2Adapter, :TrilogyAdapter)
     end
   end