try cores=1 in a few more places

Author: jgabry

tests/testthat/test-install.R

@@ -13,7 +13,7 @@ test_that("install_cmdstan() successfully installs cmdstan", {
   }
   expect_message(
     expect_output(
-      install_cmdstan(dir = dir, cores = 2, quiet = FALSE, overwrite = TRUE,
+      install_cmdstan(dir = dir, cores = 1, quiet = FALSE, overwrite = TRUE,
                       release_url = cmdstan_test_tarball_url,
                       wsl = os_is_wsl()),
       "Compiling C++ code",
@@ -52,7 +52,7 @@ test_that("install_cmdstan() errors if it times out", {
   expect_warning(
     expect_message(
       install_cmdstan(dir = dir, timeout = 1, quiet = TRUE, overwrite = dir_exists,
-                      release_url = cmdstan_test_tarball_url, wsl = os_is_wsl()),
+                      cores = 1, wsl = os_is_wsl()),
       if (dir_exists) "* Removing the existing installation" else "* * Installing CmdStan from https://github.com",
       fixed = TRUE
     ),
@@ -64,8 +64,7 @@ test_that("install_cmdstan() errors if it times out", {
   expect_warning(
     expect_message(
       install_cmdstan(dir = dir, timeout = 1, quiet = FALSE, overwrite = dir_exists,
-                      release_url = cmdstan_test_tarball_url,
-                      wsl = os_is_wsl()),
+                      cores = 1, wsl = os_is_wsl()),
       if (dir_exists) "* Removing the existing installation" else "* * Installing CmdStan from https://github.com",
       fixed = TRUE
     ),
@@ -102,7 +101,7 @@ test_that("install_cmdstan() works with version and release_url", {
 
   expect_message(
     expect_output(
-      install_cmdstan(dir = dir, overwrite = TRUE, cores = 4,
+      install_cmdstan(dir = dir, overwrite = TRUE, cores = 1,
                       release_url = "https://github.com/stan-dev/cmdstan/releases/download/v2.36.0/cmdstan-2.36.0.tar.gz",
                       wsl = os_is_wsl()),
       "Compiling C++ code",
@@ -114,7 +113,7 @@ test_that("install_cmdstan() works with version and release_url", {
   expect_warning(
     expect_message(
       expect_output(
-        install_cmdstan(dir = dir, overwrite = TRUE, cores = 4,
+        install_cmdstan(dir = dir, overwrite = TRUE, cores = 1,
                         version = "2.36.0",
                         # the URL is intentionally invalid to test that the version has higher priority
                         release_url = "https://github.com/stan-dev/cmdstan/releases/download/v2.27.3/cmdstan-2.27.3.tar.gz",
@@ -218,11 +217,11 @@ test_that("Downloads respect quiet argument", {
   # expect_message has trouble capturing the messages from download.file
   # so handle manually
   install_normal <- suppressWarnings(
-    capture.output(install_cmdstan(dir = dir, overwrite = TRUE, quiet = FALSE),
+    capture.output(install_cmdstan(dir = dir, overwrite = TRUE, quiet = FALSE, cores = 1),
                    type = "message")
   )
   install_quiet <- suppressWarnings(
-    capture.output(install_cmdstan(dir = dir, overwrite = TRUE, quiet = TRUE),
+    capture.output(install_cmdstan(dir = dir, overwrite = TRUE, quiet = TRUE, cores = 1),
                    type = "message")
   )
 
@@ -267,7 +266,7 @@ test_that("Install from release file works", {
 
   expect_message(
     expect_output(
-      install_cmdstan(dir = dir, cores = 2, quiet = FALSE, overwrite = TRUE,
+      install_cmdstan(dir = dir, cores = 1, quiet = FALSE, overwrite = TRUE,
                       release_file = destfile,
                       wsl = os_is_wsl()),
       "Compiling C++ code",