`timestamps` and `add_timestamps` pass additional options. Closes #17624

Option passing was already supported when using `create_table` but not
for `change_table`. This patch aligns the method signatures.

activerecord/CHANGELOG.md

+*   `timestamps` and `add_timestamps` passes additional options along.
+    (like `null: false`)
+
+    Closes #17624.
+
+    *Yves Senn*
+
+
 ## Rails 4.0.12 (November 16, 2014) ##
 
 *   Cache `CollectionAssociation#reader` proxies separately before and after

activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb

@@ -393,8 +393,8 @@ def rename_index(index_name, new_index_name)
       # Adds timestamps (+created_at+ and +updated_at+) columns to the table. See SchemaStatements#add_timestamps
       #
       #  t.timestamps
-      def timestamps
-        @base.add_timestamps(@table_name)
+      def timestamps(options = {})
+        @base.add_timestamps(@table_name, options)
       end
 
       # Changes the column's definition according to the new options.

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -727,9 +727,9 @@ def columns_for_distinct(columns, orders) #:nodoc:
       #
       #   add_timestamps(:suppliers)
       #
-      def add_timestamps(table_name)
-        add_column table_name, :created_at, :datetime
-        add_column table_name, :updated_at, :datetime
+      def add_timestamps(table_name, options = {})
+        add_column table_name, :created_at, :datetime, options
+        add_column table_name, :updated_at, :datetime, options
       end
 
       # Removes the timestamp columns (+created_at+ and +updated_at+) from the table definition.

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -721,8 +721,8 @@ def remove_index_sql(table_name, options = {})
         "DROP INDEX #{index_name}"
       end
 
-      def add_timestamps_sql(table_name)
-        [add_column_sql(table_name, :created_at, :datetime), add_column_sql(table_name, :updated_at, :datetime)]
+      def add_timestamps_sql(table_name, options = {})
+        [add_column_sql(table_name, :created_at, :datetime, options), add_column_sql(table_name, :updated_at, :datetime, options)]
       end
 
       def remove_timestamps_sql(table_name)

activerecord/test/cases/migration/change_table_test.rb

@@ -74,8 +74,8 @@ def test_remove_references_column_type_with_polymorphic_and_options_null_is_fals
 
       def test_timestamps_creates_updated_at_and_created_at
         with_change_table do |t|
-          @connection.expect :add_timestamps, nil, [:delete_me]
-          t.timestamps
+          @connection.expect :add_timestamps, nil, [:delete_me, {null: false}]
+          t.timestamps null: false
         end
       end