Split out token `if` tests to trigger `before_create`.

When running passing condition assertions in the same test the user had already
been saved at that point.

Split out so we have a not yet persisted user.

Rename condition tests to improve clarity a bit.

activerecord/test/cases/secure_token_test.rb

@@ -30,13 +30,17 @@ def test_token_value_not_overwritten_when_present
     assert_equal @user.token, "custom-secure-token"
   end
 
-  def test_token_with_if_condition_checks_condition_on_save
+  def test_failing_if_condition_does_not_set_token
     @user.token_condition = false
     @user.save
+
     assert_nil @user.conditional_token
+  end
 
+  def test_passing_if_condition_sets_token
     @user.token_condition = true
     @user.save
+
     assert_not_nil @user.conditional_token
   end
 end