Switch to side-by-side view

--- a
+++ b/tests/testthat/test-gpuManagement.R
@@ -0,0 +1,6 @@
+context("gpu-management")
+
+test_that("Check the functions in gpu-management", {
+  expect_error(startGPUSession())
+  expect_error(startGPUSession(""))
+})