Make sure new card drafts are refreshed when reused

To deal with old timestamps messing with card ordering and so.

https://app.fizzy.do/5986089/cards/3495

test/models/user/accessor_test.rb

@@ -12,4 +12,36 @@ class User::AccessorTest < ActiveSupport::TestCase
     system_user = User.create!(account: accounts("37s"), role: "system", name: "Test System User")
     assert_empty system_user.boards
   end
+
+  test "creating a new card draft sets current timestamps" do
+    user = users(:david)
+    board = boards(:writebook)
+
+    freeze_time do
+      card = user.draft_new_card_at(board)
+
+      assert card.persisted?
+      assert card.drafted?
+      assert_equal user, card.creator
+      assert_equal board, card.board
+      assert_equal Time.current, card.created_at
+      assert_equal Time.current, card.updated_at
+      assert_equal Time.current, card.last_active_at
+    end
+  end
+
+  test "reusing an existing card draft refreshes timestamps" do
+    existing_draft = cards(:unfinished_thoughts)
+    user = existing_draft.creator
+    board = existing_draft.board
+
+    freeze_time do
+      card = user.draft_new_card_at(board)
+
+      assert_equal existing_draft, card
+      assert_equal Time.current, card.created_at
+      assert_equal Time.current, card.updated_at
+      assert_equal Time.current, card.last_active_at
+    end
+  end
 end