Fix running tests in tox. Closes #61.

.gitignore

@@ -1,6 +1,7 @@
 *.pyc
 __pycache__
 cairocffi/_ffi*.py
+*.egg
 *.egg-info
 /dist
 /.tox

.travis.yml

@@ -12,6 +12,5 @@ before_install:
 install:
   - "pip install xcffib"
   - "pip install ."
-  - "python -c 'import cffi, sys; sys.exit(cffi.__version_info__[0])' || python cairocffi/ffi_build.py"
 script: "py.test"
 sudo: false

tox.ini

@@ -5,20 +5,22 @@ envlist = py26-cairo-1.8.2, py26-cairo-1.10.0, py26, py27, py32, py33, py34, pyp
 deps=
     pytest
     xcffib
-commands=py.test []
+commands=py.test --pyargs cairocffi []
+changedir={toxworkdir}
+passenv=DISPLAY
 
 [testenv:py26-cairo-1.8.2]
 ; Building old cairo on an modern system might require setting
 ; "png_REQUIRES=libpng" as an environment variable for ./configure
 basepython=python2.6
-setenv=LD_LIBRARY_PATH=../cairo-1.8.2/lib
+setenv=LD_LIBRARY_PATH={toxinidir}/../cairo-1.8.2/lib
 commands=
-    py.test []
+    py.test --pyargs cairocffi []
     python -c 'import cairocffi; version = cairocffi.cairo_version_string(); print "Cairo version", version; assert version == "1.8.2"'
 
 [testenv:py26-cairo-1.10.0]
 basepython=python2.6
-setenv=LD_LIBRARY_PATH=../cairo-1.10.0/lib
+setenv=LD_LIBRARY_PATH={toxinidir}/../cairo-1.10.0/lib
 commands=
-    py.test []
+    py.test --pyargs cairocffi []
     python -c 'import cairocffi; version = cairocffi.cairo_version_string(); print "Cairo version", version; assert version == "1.10.0"'