Fix bug when no paths is given for Plan constructor

FileLoader was trying to initialize abspath by finding a matched
name from abspath which will lead to an exception. Use default
paths of class instead.

Change-Id: I8ca2122e97edd734aa68b4c6b12196960842313b
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

1 files changed, 4 insertions, 3 deletions

diff --git a/qtip/loader/file.py b/qtip/loader/file.py
index 038f57dd..a39e15f6 100644
--- a/qtip/loader/file.py
+++ b/qtip/loader/file.py
@@ -28,11 +28,12 @@ class FileLoader(BaseLoader):
         self._filename = name
         self.abspath = self.find(name, paths=paths)
 
-    def find(self, name, paths=None):
+    @classmethod
+    def find(cls, name, paths=None):
         """find a specification in searching paths"""
-        paths = [self.abspath] if paths is None else paths
+        paths = cls._paths if paths is None else paths
         for p in paths:
-            abspath = path.join(p, self.RELATIVE_PATH, name)
+            abspath = path.join(p, cls.RELATIVE_PATH, name)
             if path.exists(abspath):
                 return abspath
         raise NotFoundError(name, paths)