diff --git a/src/test/unit/io/stan_csv_reader_test.cpp b/src/test/unit/io/stan_csv_reader_test.cpp
index a4df51281b..ec91cf8684 100644
--- a/src/test/unit/io/stan_csv_reader_test.cpp
+++ b/src/test/unit/io/stan_csv_reader_test.cpp
@@ -570,22 +570,24 @@ TEST_F(StanIoStanCsvReader, fixed_param) {
   ASSERT_EQ(10, fixed_param.samples.rows());
 }
 
-
 TEST_F(StanIoStanCsvReader, no_samples) {
   std::ifstream no_samples_stream;
-  no_samples_stream.open("src/test/unit/io/test_csv_files/bernoulli_no_samples.csv");
+  no_samples_stream.open(
+      "src/test/unit/io/test_csv_files/bernoulli_no_samples.csv");
   std::stringstream out;
-  stan::io::stan_csv no_samples = stan::io::stan_csv_reader::parse(no_samples_stream, &out);
+  stan::io::stan_csv no_samples
+      = stan::io::stan_csv_reader::parse(no_samples_stream, &out);
   no_samples_stream.close();
   ASSERT_EQ(out.str(), "Unable to parse sample\n");
 }
 
-
 TEST_F(StanIoStanCsvReader, variational) {
   std::ifstream variational_stream;
-  variational_stream.open("src/test/unit/io/test_csv_files/bernoulli_variational.csv");
+  variational_stream.open(
+      "src/test/unit/io/test_csv_files/bernoulli_variational.csv");
   std::stringstream out;
-  stan::io::stan_csv variational = stan::io::stan_csv_reader::parse(variational_stream, &out);
+  stan::io::stan_csv variational
+      = stan::io::stan_csv_reader::parse(variational_stream, &out);
   variational_stream.close();
   ASSERT_EQ(1000, variational.metadata.num_samples);
 }