diff --git a/src/test/runTest.ts b/src/test/runTest.ts
index 4e955a9..0c2206b 100644
--- a/src/test/runTest.ts
+++ b/src/test/runTest.ts
@@ -16,6 +16,11 @@ const spawn = (cliPath: string, args: string[]): Promise<void> => {
       console.error(`stderr: ${data}`);
     });
 
+    child.on("error", (err) => {
+      console.error("Failed to start subprocess.");
+      return reject();
+    });
+
     child.on("close", (code) => {
       console.log(`child process exited with code ${code}`);
       return resolve();