Add unittests for entropy

Added run_tests.sh, taken shamelessly from taskflow.

Change-Id: I39b9cfa106c06296b917077cc3ef93dbf5a9a03b

run_tests.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+function usage {
+  echo "Usage: $0 [OPTION]..."
+  echo "Run Entropy's test suite(s)"
+  echo ""
+  echo "  -f, --force              Force a clean re-build of the virtual environment. Useful when dependencies have been added."
+  echo "  -p, --pep8               Just run pep8"
+  echo "  -P, --no-pep8            Don't run static code checks"
+  echo "  -v, --verbose            Increase verbosity of reporting output"
+  echo "  -h, --help               Print this usage message"
+  echo ""
+  exit
+}
+
+function process_option {
+  case "$1" in
+    -h|--help) usage;;
+    -p|--pep8) let just_pep8=1;;
+    -P|--no-pep8) let no_pep8=1;;
+    -f|--force) let force=1;;
+    -v|--verbose) let verbose=1;;
+    *) pos_args="$pos_args $1"
+  esac
+}
+
+verbose=0
+force=0
+pos_args=""
+just_pep8=0
+no_pep8=0
+tox_args=""
+tox=""
+
+for arg in "$@"; do
+  process_option $arg
+done
+
+py=`which python`
+if [ -z "$py" ]; then
+    echo "Python is required to use $0"
+    echo "Please install it via your distributions package management system."
+    exit 1
+fi
+
+py_envs=`python -c 'import sys; print("py%s%s" % (sys.version_info[0:2]))'`
+py_envs=${PY_ENVS:-$py_envs}
+
+function run_tests {
+    local tox_cmd="${tox} ${tox_args} -e $py_envs ${pos_args}"
+    echo "Running tests for environments $py_envs via $tox_cmd"
+    bash -c "$tox_cmd"
+}
+
+function run_flake8 {
+  local tox_cmd="${tox} ${tox_args} -e pep8 ${pos_args}"
+  echo "Running flake8 via $tox_cmd"
+  bash -c "$tox_cmd"
+}
+
+if [ $force -eq 1 ]; then
+  tox_args="$tox_args -r"
+fi
+
+if [ $verbose -eq 1 ]; then
+  tox_args="$tox_args -v"
+fi
+
+tox=`which tox`
+if [ -z "$tox" ]; then
+    echo "Tox is required to use $0"
+    echo "Please install it via \`pip\` or via your distributions" \
+         "package management system."
+    echo "Visit http://tox.readthedocs.org/ for additional installation" \
+         "instructions."
+    exit 1
+fi
+
+if [ $just_pep8 -eq 1 ]; then
+  run_flake8
+  exit
+fi
+
+run_tests || exit
+
+if [ $no_pep8 -eq 0 ]; then
+  run_flake8
+fi