Update tests/testthat/test_postprocessing_helpers.R

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: davidrsch

tests/testthat/test_postprocessing_helpers.R

@@ -190,7 +190,10 @@ test_that("keras_postprocess_classes handles multi-output with NULL levels fallb
   processed <- keras_postprocess_classes(results, mock_object_null_lvl)
   expect_s3_class(processed, "tbl_df")
   expect_equal(names(processed), c(".pred_class_output1"))
-  expect_equal(as.character(processed$.pred_class_output1), c("class1", "class2")) # Changed expected
+  expect_equal(
+    as.character(processed$.pred_class_output1),
+    c("class1", "class2")
+  ) # Changed expected
   expect_true(is.factor(processed$.pred_class_output1))
   expect_equal(levels(processed$.pred_class_output1), c("class1", "class2"))
 })