diff --git a/tests/testthat/test-Archiver.R b/tests/testthat/test-Archiver.R
index 5bcaebc5..013ba53e 100644
--- a/tests/testthat/test-Archiver.R
+++ b/tests/testthat/test-Archiver.R
@@ -20,7 +20,7 @@ reporter <- Reporter$new()
 reporter$append_cards(list(card1, card2))
 
 testthat::test_that("intialize Archiver", {
-  expect_error(Archiver$new(), NA)
+  testthat::expect_no_error(Archiver$new())
 })
 
 testthat::test_that("new returns an object of type Archiver", {
@@ -34,7 +34,7 @@ testthat::test_that("Archiver errors with the abstract methods", {
 })
 
 testthat::test_that("intialize FileArchiver", {
-  testthat::expect_error(FileArchiver$new(), NA)
+  testthat::expect_no_error(FileArchiver$new())
 })
 
 testthat::test_that("FileArchiver creates a temp directory when initialized", {
@@ -58,7 +58,7 @@ testthat::test_that("FileArchiver dectructor removes the temp dir", {
 })
 
 testthat::test_that("intialize JSONArchiver", {
-  testthat::expect_error(JSONArchiver$new(), NA)
+  testthat::expect_no_error(JSONArchiver$new())
 })
 
 testthat::test_that("JSONArchiver creates a temp directory when initialized", {
@@ -79,7 +79,7 @@ testthat::test_that("JSONArchiver dectructor removes the temp dir", {
 archiver <- JSONArchiver$new()
 
 testthat::test_that("JSONArchiver write a reporter", {
-  testthat::expect_error(archiver$write(reporter), NA)
+  testthat::expect_no_error(archiver$write(reporter))
 })
 
 path_with_files <- archiver$get_output_dir()
diff --git a/tests/testthat/test-ContentBlock.R b/tests/testthat/test-ContentBlock.R
index ec74489a..141687e7 100644
--- a/tests/testthat/test-ContentBlock.R
+++ b/tests/testthat/test-ContentBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("ContentBlock object can be created", {
-  testthat::expect_error(ContentBlock$new(), regexp = NA)
+  testthat::expect_no_error(ContentBlock$new())
 })
 
 testthat::test_that("new returns an object of type ContentBlock", {
@@ -8,7 +8,7 @@ testthat::test_that("new returns an object of type ContentBlock", {
 
 testthat::test_that("set_content accepts a character object", {
   block <- ContentBlock$new()
-  testthat::expect_error(block$set_content("test"), regexp = NA)
+  testthat::expect_no_error(block$set_content("test"))
 })
 
 testthat::test_that("set_content asserts the argument is character", {
diff --git a/tests/testthat/test-DownloadReportModule.R b/tests/testthat/test-DownloadReportModule.R
index ae90fff7..89a274ee 100644
--- a/tests/testthat/test-DownloadReportModule.R
+++ b/tests/testthat/test-DownloadReportModule.R
@@ -111,7 +111,7 @@ knitr_args <- list()
 temp_dir <- tempdir()
 
 testthat::test_that("report_render_and_compress - valid arguments", {
-  testthat::expect_error(report_render_and_compress(reporter, input, knitr_args, temp_dir), NA)
+  testthat::expect_no_error(report_render_and_compress(reporter, input, knitr_args, temp_dir))
 })
 
 testthat::test_that("report_render_and_compress - invalid arguments", {
diff --git a/tests/testthat/test-FileBlock.R b/tests/testthat/test-FileBlock.R
index 29296fb6..24b07b65 100644
--- a/tests/testthat/test-FileBlock.R
+++ b/tests/testthat/test-FileBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("FileBlock object can be created", {
-  testthat::expect_error(FileBlock$new(), regexp = NA)
+  testthat::expect_no_error(FileBlock$new())
 })
 
 testthat::test_that("new returns an object of type FileBlock", {
diff --git a/tests/testthat/test-NewpageBlock.R b/tests/testthat/test-NewpageBlock.R
index 80c2bc29..b739ff8f 100644
--- a/tests/testthat/test-NewpageBlock.R
+++ b/tests/testthat/test-NewpageBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("NewpageBlock object can be created", {
-  testthat::expect_error(NewpageBlock$new(), regexp = NA)
+  testthat::expect_no_error(NewpageBlock$new())
 })
 
 testthat::test_that("new returns an object of type NewpageBlock", {
@@ -8,5 +8,5 @@ testthat::test_that("new returns an object of type NewpageBlock", {
 
 testthat::test_that("set_content accepts a string", {
   block <- NewpageBlock$new()
-  testthat::expect_error(block$get_content(), regexp = NA)
+  testthat::expect_no_error(block$get_content())
 })
diff --git a/tests/testthat/test-RcodeBlock.R b/tests/testthat/test-RcodeBlock.R
index e4a06152..6066d237 100644
--- a/tests/testthat/test-RcodeBlock.R
+++ b/tests/testthat/test-RcodeBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("RcodeBlock object can be created", {
-  testthat::expect_error(RcodeBlock$new(), regexp = NA)
+  testthat::expect_no_error(RcodeBlock$new())
 })
 
 testthat::test_that("new returns an object of type RcodeBlock", {
@@ -8,7 +8,7 @@ testthat::test_that("new returns an object of type RcodeBlock", {
 
 testthat::test_that("set_content accepts a string", {
   block <- RcodeBlock$new()
-  testthat::expect_error(block$set_content("test"), regexp = NA)
+  testthat::expect_no_error(block$set_content("test"))
 })
 
 testthat::test_that("set_content asserts the argument is a string", {
@@ -37,7 +37,7 @@ testthat::test_that("set_params accepts one of the styles returned by get_availa
   for (param in RcodeBlock$new()$get_available_params()) {
     input <- list()
     input[[param]] <- NULL
-    testthat::expect_error(RcodeBlock$new()$set_params(input), regexp = NA)
+    testthat::expect_no_error(RcodeBlock$new()$set_params(input))
   }
 })
 
diff --git a/tests/testthat/test-Renderer.R b/tests/testthat/test-Renderer.R
index e5e12aed..139caa06 100644
--- a/tests/testthat/test-Renderer.R
+++ b/tests/testthat/test-Renderer.R
@@ -1,5 +1,5 @@
 testthat::test_that("Renderer object can be created", {
-  testthat::expect_error(Renderer$new(), regexp = NA)
+  testthat::expect_no_error(Renderer$new())
 })
 
 testthat::test_that("new returns an object of type Renderer", {
diff --git a/tests/testthat/test-ReportCard.R b/tests/testthat/test-ReportCard.R
index e6e4eb4a..1a7aff6c 100644
--- a/tests/testthat/test-ReportCard.R
+++ b/tests/testthat/test-ReportCard.R
@@ -1,5 +1,5 @@
 testthat::test_that("ReportCard object can be created", {
-  testthat::expect_error(ReportCard$new(), regexp = NA)
+  testthat::expect_no_error(ReportCard$new())
 })
 
 testthat::test_that("new returns an object of type ReportCard", {
@@ -7,7 +7,7 @@ testthat::test_that("new returns an object of type ReportCard", {
 })
 
 testthat::test_that("append_text accepts a character", {
-  testthat::expect_error(ReportCard$new()$append_text("test"), regexp = NA)
+  testthat::expect_no_error(ReportCard$new()$append_text("test"))
 })
 
 testthat::test_that("append_text returns self", {
@@ -85,8 +85,8 @@ testthat::test_that("append_metadata returns an object of type ReportCard", {
 })
 
 testthat::test_that("append_metadata accepts a character key and a character or list value", {
-  testthat::expect_error(ReportCard$new()$append_metadata("key1", "value1"), regexp = NA)
-  testthat::expect_error(ReportCard$new()$append_metadata("key1", list("value1")), regexp = NA)
+  testthat::expect_no_error(ReportCard$new()$append_metadata("key1", "value1"))
+  testthat::expect_no_error(ReportCard$new()$append_metadata("key1", list("value1")))
 })
 
 testthat::test_that("append_metadata throws error if key is not character", {
diff --git a/tests/testthat/test-Reporter.R b/tests/testthat/test-Reporter.R
index d08699d1..6a5f6781 100644
--- a/tests/testthat/test-Reporter.R
+++ b/tests/testthat/test-Reporter.R
@@ -1,5 +1,5 @@
 testthat::test_that("Reporter object can be created", {
-  testthat::expect_error(Reporter$new(), regexp = NA)
+  testthat::expect_no_error(Reporter$new())
 })
 
 testthat::test_that("new returns an object of type Reporter", {
@@ -77,7 +77,7 @@ testthat::test_that("reactive_add_card", {
 
 testthat::test_that("append_metadata accept only named list", {
   reporter <- Reporter$new()
-  testthat::expect_error(reporter$append_metadata(list(sth = "sth")), NA)
+  testthat::expect_no_error(reporter$append_metadata(list(sth = "sth")))
   testthat::expect_error(reporter$append_metadata("sth"), "'list', not 'character'")
   testthat::expect_error(reporter$append_metadata(list("sth")), "Must have names")
 })
@@ -86,13 +86,13 @@ testthat::test_that("append_metadata accept only unique names which could not be
   reporter <- Reporter$new()
   testthat::expect_error(reporter$append_metadata(list(sth = "sth", sth = 2)), "but element 2 is duplicated")
   reporter <- Reporter$new()
-  testthat::expect_error(reporter$append_metadata(list(sth = "sth")), NA)
+  testthat::expect_no_error(reporter$append_metadata(list(sth = "sth")))
   testthat::expect_error(reporter$append_metadata(list(sth = "sth")), "failed: Must be TRUE")
 })
 
 testthat::test_that("get_metadata", {
   reporter <- Reporter$new()
-  testthat::expect_error(reporter$append_metadata(list(sth = "sth")), NA)
+  testthat::expect_no_error(reporter$append_metadata(list(sth = "sth")))
   testthat::expect_identical(reporter$get_metadata(), list(sth = "sth"))
 })
 
diff --git a/tests/testthat/test-TableBlock.R b/tests/testthat/test-TableBlock.R
index 17db4465..fe51d90b 100644
--- a/tests/testthat/test-TableBlock.R
+++ b/tests/testthat/test-TableBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("TableBlock object can be created", {
-  testthat::expect_error(TableBlock$new(), regexp = NA)
+  testthat::expect_no_error(TableBlock$new())
 })
 
 testthat::test_that("new returns an object of type TableBlock", {
@@ -8,7 +8,7 @@ testthat::test_that("new returns an object of type TableBlock", {
 
 testthat::test_that("set_content accepts a table object", {
   block <- TableBlock$new()
-  testthat::expect_error(block$set_content(iris), regexp = NA)
+  testthat::expect_no_error(block$set_content(iris))
 })
 
 testthat::test_that("set_content asserts the argument is a plot", {
@@ -52,7 +52,7 @@ testthat::test_that("from_list after to_list to save and retrive", {
 
 testthat::test_that("set_content supports data.frame object", {
   block <- TableBlock$new()
-  testthat::expect_error(block$set_content(iris), NA)
+  testthat::expect_no_error(block$set_content(iris))
 })
 
 testthat::test_that("set_content supports rtables object", {
@@ -65,5 +65,5 @@ testthat::test_that("set_content supports rtables object", {
         "range" = diff(range(x))
       )
     })
-  testthat::expect_error(block$set_content(rtables::build_table(l, iris)), NA)
+  testthat::expect_no_error(block$set_content(rtables::build_table(l, iris)))
 })
diff --git a/tests/testthat/test-TextBlock.R b/tests/testthat/test-TextBlock.R
index 8dbc12aa..faa30b04 100644
--- a/tests/testthat/test-TextBlock.R
+++ b/tests/testthat/test-TextBlock.R
@@ -1,5 +1,5 @@
 testthat::test_that("TextBlock object can be created", {
-  testthat::expect_error(TextBlock$new(), regexp = NA)
+  testthat::expect_no_error(TextBlock$new())
 })
 
 testthat::test_that("new returns an object of type TextBlock", {
@@ -8,7 +8,7 @@ testthat::test_that("new returns an object of type TextBlock", {
 
 testthat::test_that("set_content accepts a string", {
   block <- TextBlock$new()
-  testthat::expect_error(block$set_content("test"), regexp = NA)
+  testthat::expect_no_error(block$set_content("test"))
 })
 
 testthat::test_that("set_content asserts the argument is a string", {
@@ -35,7 +35,7 @@ testthat::test_that("get_available_styles returns an array of character", {
 
 testthat::test_that("set_style accepts one of the styles returned by get_available_styles", {
   for (style in TextBlock$new()$get_available_styles()) {
-    testthat::expect_error(TextBlock$new()$set_style(!!style), regexp = NA)
+    testthat::expect_no_error(TextBlock$new()$set_style(!!style))
   }
 })
 
diff --git a/tests/testthat/test-yaml_utils.R b/tests/testthat/test-yaml_utils.R
index f337dc0c..8d47dacb 100644
--- a/tests/testthat/test-yaml_utils.R
+++ b/tests/testthat/test-yaml_utils.R
@@ -13,7 +13,7 @@ testthat::test_that("yaml_quoted does not modify the value of the object", {
 
 testthat::test_that("conv_str_logi - accept only a string", {
   testthat::expect_error(conv_str_logi(2))
-  testthat::expect_error(conv_str_logi("string"), NA)
+  testthat::expect_no_error(conv_str_logi("string"))
 })
 
 testthat::test_that("conv_str_logi - not influence the regular character", {
@@ -47,8 +47,8 @@ testthat::test_that("rmd_outputs - all returned out in the rmarkdown namespace",
 
 testthat::test_that("rmd_output_arguments - accepts only string from possible rmarkdown outputs", {
   testthat::expect_error(rmd_output_arguments("random_text"))
-  testthat::expect_error(rmd_output_arguments("pdf_document"), NA)
-  testthat::expect_error(rmd_output_arguments("pdf_document", TRUE), NA)
+  testthat::expect_no_error(rmd_output_arguments("pdf_document"))
+  testthat::expect_no_error(rmd_output_arguments("pdf_document", TRUE))
 })
 
 testthat::test_that("rmd_output_arguments - returned all pdf_document arguments", {
@@ -69,8 +69,8 @@ testthat::test_that("as_yaml_auto - accept a named list (optionally nested)", {
   testthat::expect_error(as_yaml_auto(list(1)))
   testthat::expect_error(as_yaml_auto("sth"))
 
-  testthat::expect_error(as_yaml_auto(list(author = "", output = list(pdf_document = list(toc = TRUE)))), NA)
-  testthat::expect_error(as_yaml_auto(list(author = "", output = "pdf_document", toc = TRUE, keep_tex = TRUE)), NA)
+  testthat::expect_no_error(as_yaml_auto(list(author = "", output = list(pdf_document = list(toc = TRUE)))))
+  testthat::expect_no_error(as_yaml_auto(list(author = "", output = "pdf_document", toc = TRUE, keep_tex = TRUE)))
 })
 
 testthat::test_that("as_yaml_auto - works the same as yaml::as.yaml for a nested list when as_header is FALSE", {