fix issue190: allow setenv to be empty

3 files changed, 22 insertions, 0 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 62f2d3c..3e73166 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+1.8.1.dev
+-----------
+
+- fix issue190: allow setenv to be empty.
+
+
 1.8.0
 -----------
 
diff --git a/tests/test_config.py b/tests/test_config.py
index efbbc80..bf74133 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -896,6 +896,20 @@ class TestConfigTestEnv:
         assert configs["py27"].recreate
         assert not configs["py33"].recreate
 
+    @pytest.mark.issue190
+    def test_factors_in_setenv(self, newconfig):
+        inisource="""
+            [tox]
+            envlist = py27,py26
+
+            [testenv]
+            setenv =
+                py27: X = 1
+        """
+        configs = newconfig([], inisource).envconfigs
+        assert configs["py27"].setenv["X"] == "1"
+        assert "X" not in configs["py26"].setenv
+
 
 class TestGlobalOptions:
     def test_notest(self, newconfig):
diff --git a/tox/_config.py b/tox/_config.py
index d0f8c3e..3c1b8c2 100644
--- a/tox/_config.py
+++ b/tox/_config.py
@@ -526,6 +526,8 @@ class IniReader:
 
         value = {}
         for line in s.split(sep):
+            if not line.strip():
+                continue
             name, rest = line.split('=', 1)
             value[name.strip()] = rest.strip()