diff --git a/R/pkg/inst/tests/testthat/test_Serde.R b/R/pkg/inst/tests/testthat/test_Serde.R
index 11c69d8da6495..518fb7bd94043 100644
--- a/R/pkg/inst/tests/testthat/test_Serde.R
+++ b/R/pkg/inst/tests/testthat/test_Serde.R
@@ -21,7 +21,7 @@ sparkSession <- sparkR.session(enableHiveSupport = FALSE)
 
 test_that("SerDe of primitive types", {
   skip_on_cran()
-  
+
   x <- callJStatic("SparkRHandler", "echo", 1L)
   expect_equal(x, 1L)
   expect_equal(class(x), "integer")
diff --git a/R/pkg/inst/tests/testthat/test_Windows.R b/R/pkg/inst/tests/testthat/test_Windows.R
index bd648ef572ba4..919b063bf0693 100644
--- a/R/pkg/inst/tests/testthat/test_Windows.R
+++ b/R/pkg/inst/tests/testthat/test_Windows.R
@@ -18,7 +18,7 @@ context("Windows-specific tests")
 
 test_that("sparkJars tag in SparkContext", {
   skip_on_cran()
-  
+
   if (.Platform$OS.type != "windows") {
     skip("This test is only for Windows, skipped")
   }
diff --git a/R/pkg/inst/tests/testthat/test_binaryFile.R b/R/pkg/inst/tests/testthat/test_binaryFile.R
index c273062137678..63f54e1af02b1 100644
--- a/R/pkg/inst/tests/testthat/test_binaryFile.R
+++ b/R/pkg/inst/tests/testthat/test_binaryFile.R
@@ -81,7 +81,7 @@ test_that("saveAsObjectFile()/objectFile() following RDD transformations works",
 
 test_that("saveAsObjectFile()/objectFile() works with multiple paths", {
   skip_on_cran()
-  
+
   fileName1 <- tempfile(pattern = "spark-test", fileext = ".tmp")
   fileName2 <- tempfile(pattern = "spark-test", fileext = ".tmp")
 
diff --git a/R/pkg/inst/tests/testthat/test_broadcast.R b/R/pkg/inst/tests/testthat/test_broadcast.R
index 94aa18e2ab0ef..504ded4fc8623 100644
--- a/R/pkg/inst/tests/testthat/test_broadcast.R
+++ b/R/pkg/inst/tests/testthat/test_broadcast.R
@@ -41,7 +41,7 @@ test_that("using broadcast variable", {
 
 test_that("without using broadcast variable", {
   skip_on_cran()
-  
+
   randomMat <- matrix(nrow = 10, ncol = 10, data = rnorm(100))
 
   useBroadcast <- function(x) {
diff --git a/R/pkg/inst/tests/testthat/test_client.R b/R/pkg/inst/tests/testthat/test_client.R
index aec6a817ff563..3d53bebab6300 100644
--- a/R/pkg/inst/tests/testthat/test_client.R
+++ b/R/pkg/inst/tests/testthat/test_client.R
@@ -43,7 +43,7 @@ test_that("multiple packages don't produce a warning", {
 
 test_that("sparkJars sparkPackages as character vectors", {
   skip_on_cran()
-  
+
   args <- generateSparkSubmitArgs("", "", c("one.jar", "two.jar", "three.jar"), "",
                                   c("com.databricks:spark-avro_2.10:2.0.1"))
   expect_match(args, "--jars one.jar,two.jar,three.jar")
diff --git a/R/pkg/inst/tests/testthat/test_context.R b/R/pkg/inst/tests/testthat/test_context.R
index 38c657ad147db..632a90d68177f 100644
--- a/R/pkg/inst/tests/testthat/test_context.R
+++ b/R/pkg/inst/tests/testthat/test_context.R
@@ -183,7 +183,7 @@ test_that("spark.lapply should perform simple transforms", {
 
 test_that("add and get file to be downloaded with Spark job on every node", {
   skip_on_cran()
-  
+
   sparkR.sparkContext()
   # Test add file.
   path <- tempfile(pattern = "hello", fileext = ".txt")
diff --git a/R/pkg/inst/tests/testthat/test_includePackage.R b/R/pkg/inst/tests/testthat/test_includePackage.R
index 8b7f31cf74b00..f823ad8e9c985 100644
--- a/R/pkg/inst/tests/testthat/test_includePackage.R
+++ b/R/pkg/inst/tests/testthat/test_includePackage.R
@@ -45,7 +45,7 @@ test_that("include inside function", {
 
 test_that("use include package", {
   skip_on_cran()
-  
+
   # Only run the test if plyr is installed.
   if ("plyr" %in% rownames(installed.packages())) {
     suppressPackageStartupMessages(library(plyr))
diff --git a/R/pkg/inst/tests/testthat/test_mllib_clustering.R b/R/pkg/inst/tests/testthat/test_mllib_clustering.R
index 485609c222e01..478012e8828cd 100644
--- a/R/pkg/inst/tests/testthat/test_mllib_clustering.R
+++ b/R/pkg/inst/tests/testthat/test_mllib_clustering.R
@@ -300,7 +300,7 @@ test_that("spark.lda with text input", {
 
 test_that("spark.posterior and spark.perplexity", {
   skip_on_cran()
-  
+
   text <- read.text(absoluteSparkPath("data/mllib/sample_lda_data.txt"))
   model <- spark.lda(text, features = "value", k = 3)
 
diff --git a/R/pkg/inst/tests/testthat/test_mllib_regression.R b/R/pkg/inst/tests/testthat/test_mllib_regression.R
index db85cc3a5b30e..58924f952c6bf 100644
--- a/R/pkg/inst/tests/testthat/test_mllib_regression.R
+++ b/R/pkg/inst/tests/testthat/test_mllib_regression.R
@@ -24,7 +24,7 @@ sparkSession <- sparkR.session(enableHiveSupport = FALSE)
 
 test_that("formula of spark.glm", {
   skip_on_cran()
-  
+
   training <- suppressWarnings(createDataFrame(iris))
   # directly calling the spark API
   # dot minus and intercept vs native glm
diff --git a/R/pkg/inst/tests/testthat/test_shuffle.R b/R/pkg/inst/tests/testthat/test_shuffle.R
index 88f62c5e63a9c..cedf4f100c6c4 100644
--- a/R/pkg/inst/tests/testthat/test_shuffle.R
+++ b/R/pkg/inst/tests/testthat/test_shuffle.R
@@ -228,7 +228,7 @@ test_that("partitionBy works with dependencies", {
 
 test_that("test partitionBy with string keys", {
   skip_on_cran()
-  
+
   words <- flatMap(strListRDD, function(line) { strsplit(line, " ")[[1]] })
   wordCount <- lapply(words, function(word) { list(word, 1L) })
 
diff --git a/R/pkg/inst/tests/testthat/test_sparkR.R b/R/pkg/inst/tests/testthat/test_sparkR.R
index f6b248e93c0ae..a40981c188f7a 100644
--- a/R/pkg/inst/tests/testthat/test_sparkR.R
+++ b/R/pkg/inst/tests/testthat/test_sparkR.R
@@ -19,7 +19,7 @@ context("functions in sparkR.R")
 
 test_that("sparkCheckInstall", {
   skip_on_cran()
-  
+
   # "local, yarn-client, mesos-client" mode, SPARK_HOME was set correctly,
   # and the SparkR job was submitted by "spark-submit"
   sparkHome <- paste0(tempdir(), "/", "sparkHome")
diff --git a/R/pkg/inst/tests/testthat/test_sparkSQL.R b/R/pkg/inst/tests/testthat/test_sparkSQL.R
index 5e2e2b920c936..c062ede61bc45 100644
--- a/R/pkg/inst/tests/testthat/test_sparkSQL.R
+++ b/R/pkg/inst/tests/testthat/test_sparkSQL.R
@@ -3319,7 +3319,7 @@ compare_list <- function(list1, list2) {
 # This should always be the **very last test** in this test file.
 test_that("No extra files are created in SPARK_HOME by starting session and making calls", {
   skip_on_cran()
-  
+
   # Check that it is not creating any extra file.
   # Does not check the tempdir which would be cleaned up after.
   filesAfter <- list.files(path = sparkRDir, all.files = TRUE)
diff --git a/R/pkg/inst/tests/testthat/test_streaming.R b/R/pkg/inst/tests/testthat/test_streaming.R
index 2775a93acb4bb..f3839197e7366 100644
--- a/R/pkg/inst/tests/testthat/test_streaming.R
+++ b/R/pkg/inst/tests/testthat/test_streaming.R
@@ -135,7 +135,7 @@ test_that("Unsupported operation", {
 
 test_that("Terminated by error", {
   skip_on_cran()
-  
+
   df <- read.stream("json", path = jsonDir, schema = schema, maxFilesPerTrigger = -1)
   counts <- count(group_by(df, "name"))
   # This would not fail before returning with a StreamingQuery,
diff --git a/R/pkg/inst/tests/testthat/test_textFile.R b/R/pkg/inst/tests/testthat/test_textFile.R
index ebe883a9a129d..28b7e8e3183fd 100644
--- a/R/pkg/inst/tests/testthat/test_textFile.R
+++ b/R/pkg/inst/tests/testthat/test_textFile.R
@@ -158,7 +158,7 @@ test_that("textFile() on multiple paths", {
 
 test_that("Pipelined operations on RDDs created using textFile", {
   skip_on_cran()
-  
+
   fileName <- tempfile(pattern = "spark-test", fileext = ".tmp")
   writeLines(mockFile, fileName)