1 files changed, 2 insertions, 0 deletions
diff --git a/cli/tests/unit/os_test.ts b/cli/tests/unit/os_test.ts
index a8cc55e87..e24494854 100644
--- a/cli/tests/unit/os_test.ts
+++ b/cli/tests/unit/os_test.ts
@@ -158,10 +158,12 @@ Deno.test({ permissions: { env: true } }, function envInvalidChars() {
 });
 
 Deno.test(function osPid() {
+  assertEquals(typeof Deno.pid, "number");
   assert(Deno.pid > 0);
 });
 
 Deno.test(function osPpid() {
+  assertEquals(typeof Deno.ppid, "number");
   assert(Deno.ppid > 0);
 });