[Fix rubocop#769] Fix a false positive for Rails/FreezeTime

Fixes rubocop#769.

This PR fixes a false positive for `Rails/FreezeTime` when using
`travel_to` with an argument of `DateTime.new` with arguments.

changelog/fix_a_false_positive_for_rails_freeze_time.md

@@ -0,0 +1 @@
+* [#769](https://github.com/rubocop/rubocop-rails/issues/769): Fix a false positive for `Rails/FreezeTime` when using `travel_to` with an argument of `DateTime.new` with arguments. ([@koic][])

lib/rubocop/cop/rails/freeze_time.rb

@@ -43,8 +43,8 @@ class FreezeTime < Base
         PATTERN
 
         def on_send(node)
-          child_node, method_name = *node.first_argument.children
-          return unless child_node
+          child_node, method_name, time_argument = *node.first_argument.children
+          return if time_argument || !child_node
           return unless current_time?(child_node, method_name) || current_time_with_convert?(child_node, method_name)
 
           add_offense(node) do |corrector|

spec/rubocop/cop/rails/freeze_time_spec.rb

@@ -91,4 +91,10 @@
       travel_to(current)
     RUBY
   end
+
+  it 'does not register an offense when using `travel_to` with an argument of `DateTime.new` with arguments' do
+    expect_no_offenses(<<~RUBY)
+      travel_to(DateTime.new(2022, 5, 3, 12, 0, 0))
+    RUBY
+  end
 end