All modern adapters returns a numeric value as the result of numeric calculation

activerecord/test/cases/calculations_test.rb

@@ -589,11 +589,7 @@ def test_count_with_block
   end
 
   def test_should_sum_expression
-    if current_adapter?(:SQLite3Adapter, :Mysql2Adapter, :PostgreSQLAdapter, :OracleAdapter)
-      assert_equal 636, Account.sum("2 * credit_limit")
-    else
-      assert_equal 636, Account.sum("2 * credit_limit").to_i
-    end
+    assert_equal 636, Account.sum("2 * credit_limit")
   end
 
   def test_sum_expression_returns_zero_when_no_records_to_sum

activerecord/test/cases/query_cache_test.rb

@@ -335,11 +335,7 @@ def test_cache_is_flat
 
   def test_cache_does_not_wrap_results_in_arrays
     Task.cache do
-      if current_adapter?(:SQLite3Adapter, :Mysql2Adapter, :PostgreSQLAdapter, :OracleAdapter)
-        assert_equal 2, Task.connection.select_value("SELECT count(*) AS count_all FROM tasks")
-      else
-        assert_instance_of String, Task.connection.select_value("SELECT count(*) AS count_all FROM tasks")
-      end
+      assert_equal 2, Task.connection.select_value("SELECT count(*) AS count_all FROM tasks")
     end
   end