diff --git a/tests/testthat/test-TrainingCache.R b/tests/testthat/test-TrainingCache.R
index e4ba6b2..5be95b9 100644
--- a/tests/testthat/test-TrainingCache.R
+++ b/tests/testthat/test-TrainingCache.R
@@ -84,4 +84,6 @@ test_that("Estimator can resume training from cache", {
     }
   )
   sink()
+  trainCache <- TrainingCache$new(analysisPath)
+  testthat::expect_equal(is.na(trainCache$getLastGridSearchIndex()), TRUE)
 })