Add OSX to Travis matrix

.travis.yml

@@ -1,21 +1,33 @@
 notifications:
   email: false
 
-language: python
+language: generic
 
 sudo: false
 
 cache:
   directories:
-    - $HOME/.cache/pip
+    - $HOME/miniconda3
 
-python:
-  - "2.7"
-  - "3.6"
+before_cache:
+  - rm -rf $HOME/miniconda3/pkgs/cache
+  - rm -rf $HOME/miniconda3/envs/hosts
+
+os:
+  - linux
+  - osx
+
+env:
+  - PYTHON_VERSION="2.7"
+  - PYTHON_VERSION="3.6"
+
+before_install:
+  - export PATH="$HOME/miniconda3/bin:$PATH"
 
 install:
-  pip install flake8 mock nose
+  - ci/install_conda.sh
+  - ci/install_conda_env.sh
 
 script:
-  - nosetests
-  - flake8
+  - ci/test_repo.sh
+  - ci/lint_repo.sh

ci/install_conda.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if [ -d "$HOME/miniconda3" ] && [ -e "$HOME/miniconda3/bin/conda" ]; then
+    echo "Miniconda install already present from cache: $HOME/miniconda3"
+    rm -rf $HOME/miniconda3/envs/hosts  # Just in case...
+else
+    echo "Installing Miniconda..."
+    rm -rf $HOME/miniconda3  # Just in case...
+
+    if [ "${TRAVIS_OS_NAME}" == "osx" ]; then
+        wget http://repo.continuum.io/miniconda/Miniconda3-latest-MacOSX-x86_64.sh -O miniconda.sh || exit 1
+    else
+        wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh || exit 1
+    fi
+
+    bash miniconda.sh -b -p "$HOME/miniconda3" || exit 1
+fi
+
+echo "Configuring Miniconda..."
+conda config --set ssl_verify false || exit 1
+conda config --set always_yes true --set changeps1 false || exit 1
+
+echo "Updating Miniconda"
+conda update --all
+conda info -a || exit 1

ci/install_conda_env.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+echo "Creating a Python $PYTHON_VERSION environment"
+conda create -n hosts python=$PYTHON_VERSION || exit 1
+source activate hosts
+
+echo "Installing packages..."
+conda install mock nose flake8

ci/lint_repo.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+echo "Linting repository..."
+source activate hosts
+
+flake8

ci/test_repo.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+echo "Running unittests..."
+source activate hosts
+
+nosetests