From 8a6a8f77a80570d0fc225885659a2b49c75df205 Mon Sep 17 00:00:00 2001
From: Huafu Gandon <huafu.gandon@gmail.com>
Date: Fri, 3 Aug 2018 09:51:03 +0200
Subject: [PATCH] fix: test rootDir to handle preset-angular

---
 src/utils/get-ts-config.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/get-ts-config.ts b/src/utils/get-ts-config.ts
index 6c018303ed..27d6d54b91 100644
--- a/src/utils/get-ts-config.ts
+++ b/src/utils/get-ts-config.ts
@@ -109,7 +109,7 @@ function findTSConfigPath(
       `${jestConfig.rootDir}${sep}`,
     );
     // ensure the path is resolved
-    if (!tsConfigFile.startsWith('/')) {
+    if (!tsConfigFile.startsWith('/') && jestConfig.rootDir) {
       tsConfigFile = resolve(jestConfig.rootDir, tsConfigFile);
     } else {
       tsConfigFile = resolve(tsConfigFile);