From 3910eb6065c8f615bbd75ab8b1653f1f6e5206a4 Mon Sep 17 00:00:00 2001
From: "Mr. Outis" <mroutis@protonmail.com>
Date: Mon, 19 Nov 2018 20:52:25 -0600
Subject: [PATCH] metrics add: Raise exception when path does not exist

Fix #1316
---
 dvc/project.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dvc/project.py b/dvc/project.py
index 5763bc2c7..a93a8abbf 100644
--- a/dvc/project.py
+++ b/dvc/project.py
@@ -1023,6 +1023,9 @@ class Project(object):
         self._metrics_modify(path, typ, xpath)
 
     def metrics_add(self, path, typ=None, xpath=None):
+        if not os.path.exists(path):
+            raise DvcException('File does not exist'.format(path))
+
         if not typ:
             typ = 'raw'
         self._metrics_modify(path, typ, xpath)