Add check for existence of project name file

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 03c9d32..fdd7b94 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -119,10 +119,18 @@
 PROJECT_NAME_FILE='./scripts/project_name.txt'
 
 in_mbedtls_repo () {
+    if [ ! -f $PROJECT_NAME_FILE ]; then
+        echo "$PROJECT_NAME_FILE does not exist... Exiting..."
+        exit 1
+    fi
     grep -Fxq "Mbed TLS" "$PROJECT_NAME_FILE"
-}
+ }
 
 in_tf_psa_crypto_repo () {
+    if [ ! -f $PROJECT_NAME_FILE ]; then
+        echo "$PROJECT_NAME_FILE does not exist... Exiting..."
+        exit 1
+    fi
     grep -Fxq "TF-PSA-Crypto" "$PROJECT_NAME_FILE"
 }