opencv in travis plus unit tests

.travis.yml

 language: python
 
+dist: trusty
+sudo: required
+
 before_script:
+  - export PATH=/usr/bin:$PATH
   - pip install -U pytest
   - sudo apt-get update -qq
   - sudo apt-get install -yq python-dev python-numpy python-opencv
+  - sudo ln /dev/null /dev/raw1394
   - python -c "import cv2; print cv2.__version__"
 
 matrix:
   include:
+
     - python: "2.6"
     - python: "2.7"
     - python: "3.2"

Makefile

@@ -2,7 +2,7 @@ install:
 	pip install -r requirements.txt
 
 test:
-	pytest
+	python -m pytest tests/
 
 yapf:
 	find . -type f -name "*.py" | xargs yapf -i

tests/__init__.py

-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-__author__ = 'willbrennan'
-
-# Built-in modules
-# Standard modules
-# Custom modules

tests/skin_detector/__init__.py

-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-__author__ = 'willbrennan'
-
-# Built-in modules
-# Standard modules
-# Custom modules

tests/skin_detector/test_unit.py

 import cv2
+import os
 import numpy
 import skin_detector
 
 
 def test_get_hsv_mask():
-    img = cv2.imread("../test_image.png")
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
     mask = skin_detector.get_hsv_mask(img)
     assert img.shape[:2] == mask.shape
 
 
 def test_get_rgb_mask():
-    img = cv2.imread("../test_image.png")
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
     mask = skin_detector.get_rgb_mask(img)
     assert img.shape[:2] == mask.shape
 
 
 def test_get_ycrcb_mask():
-    img = cv2.imread("../test_image.png")
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
     mask = skin_detector.get_ycrcb_mask(img)
     assert img.shape[:2] == mask.shape
 
 
 def test_grab_cut_mask():
-    img = cv2.imread("../test_image.png")
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
     assert True
 
 
 def test_closing():
-    img = cv2.imread("../test_image.png")
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
     assert True
 
 
 def test_process():
-    img = cv2.imread("../test_image.png")
-    assert True
+    img_path = "tests/test_image.png"
+    img = cv2.imread(img_path)
+    mask = skin_detector.process(img)
+    assert img.shape[:2] == mask.shape