diff --git a/DESCRIPTION b/DESCRIPTION
index bb4f60c2..eb1fc5db 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -52,7 +52,8 @@ Imports:
     teal.logger (>= 0.1.3.9013),
     teal.reporter (>= 0.2.0),
     teal.widgets (>= 0.4.0),
-    tern (>= 0.7.10)
+    tern (>= 0.7.10),
+    utils
 Suggests:
     BiocStyle,
     covr,
diff --git a/NAMESPACE b/NAMESPACE
index cccf61a1..b526f3bd 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -73,3 +73,4 @@ import(teal.data)
 importFrom(S4Vectors,DataFrame)
 importFrom(S4Vectors,setListElement)
 importFrom(lifecycle,deprecate_soft)
+importFrom(utils,str)
diff --git a/R/barplot.R b/R/barplot.R
index c204e596..d58482fa 100644
--- a/R/barplot.R
+++ b/R/barplot.R
@@ -201,7 +201,7 @@ srv_g_barplot <- function(id,
 
     if (.test) {
       table_r <- reactive({
-        str(layer_data(plot_r()))
+        utils::str(layer_data(plot_r()))
       })
       output$table <- renderPrint(table_r())
     }
diff --git a/R/boxplot.R b/R/boxplot.R
index b275be4c..b8b39e3b 100644
--- a/R/boxplot.R
+++ b/R/boxplot.R
@@ -195,7 +195,7 @@ srv_g_boxplot <- function(id,
 
     if (.test) {
       table_r <- reactive({
-        str(layer_data(plot_r()))
+        utils::str(layer_data(plot_r()))
       })
       output$table <- renderPrint(table_r())
     }
diff --git a/R/package.R b/R/package.R
index e21acf41..035989a3 100644
--- a/R/package.R
+++ b/R/package.R
@@ -10,4 +10,5 @@
 #' @import teal teal.data
 #' @importFrom S4Vectors setListElement DataFrame
 #' @importFrom lifecycle deprecate_soft
+#' @importFrom utils str
 NULL
diff --git a/tests/testthat/test-pca.R b/tests/testthat/test-pca.R
index 8fe6205b..0c2115a7 100644
--- a/tests/testthat/test-pca.R
+++ b/tests/testthat/test-pca.R
@@ -97,7 +97,7 @@ test_that("pca module works as expected in the test app", {
   )
 
   # Now update experiment name, assay name, cluster & matrix option on correlation tab.
-  app$set_inputs(!!ns("experiment-name") := "hd2")
+  app$set_inputs(!!ns("experiment-name") := "hd2", timeout_ = 30000)
   app$set_inputs(!!ns("assay-name") := "voom")
   app$set_inputs(!!ns("cluster_columns") := TRUE)
   app$set_inputs(!!ns("show_matrix") := FALSE)
@@ -117,7 +117,7 @@ test_that("pca module works as expected in the test app", {
   app$set_inputs(!!ns("var_pct") := FALSE)
   app$set_inputs(!!ns("label") := FALSE)
 
-  app$wait_for_idle()
+  app$wait_for_idle(timeout = 30000)
   res <- app$get_value(output = ns("test_pca"))
   expect_snapshot(
     cat(res)