1 files changed, 9 insertions, 0 deletions
diff --git a/fable.py b/fable.py
index 18ac72d..0b47d4e 100644
--- a/fable.py
+++ b/fable.py
@@ -1,4 +1,7 @@
+import os
 import sys
+import tempfile
+
 
 class Context:
 
@@ -20,6 +23,8 @@ class Run:
     def __init__(self):
         self._name = None
         self._context = None
+        self._srcdir = None
+        self._tmpdir = None
 
     def get_context(self):
         return self._context
@@ -27,9 +32,13 @@ class Run:
     def start(self, name):
         self._context = Context()
         self._name = name
+        self._tmpdir = tempfile.mkdtemp()
+        self._srcdir = os.getcwd()
+        os.chdir(self._tmpdir)
 
     def end(self):
         sys.stdout.write('OK: {}\n'.format(self._name))
+        os.chdir(self._srcdir)
 
 
 def assertEqual(a, b):