Add coveralls.io for tracking test coverage

.coveralls.yml

@@ -0,0 +1,3 @@
+src_dir: .
+coverage_clover: ./tmp/clover.xml
+json_path: ./tmp/coveralls-upload.json

.travis.yml

@@ -14,6 +14,10 @@ matrix:
       env: WP_VERSION=latest WP_MULTISITE=0
 
 before_script:
-    - bash tests/install-wp-tests.sh woocommerce_test root '' localhost $WP_VERSION
+    - bash tests/bin/install.sh woocommerce_test root '' localhost $WP_VERSION
+    - bash tests/bin/travis.sh before
 
 script: phpunit -c phpunit.xml.dist
+
+after_script:
+    - bash tests/bin/travis.sh after

tests/bin/travis.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# usage: travis.sh before|after
+
+if [ $1 == 'before' ]; then
+
+	# composer install fails in PHP 5.2
+	[ $TRAVIS_PHP_VERSION == '5.2' ] && exit;
+
+	# install php-coveralls to send coverage info
+	composer init --require=satooshi/php-coveralls:0.7.x-dev -n
+	composer install --no-interaction
+
+elif [ $1 == 'after' ]; then
+
+	# no Xdebug and therefore no coverage in PHP 5.2
+	[ $TRAVIS_PHP_VERSION == '5.2' ] && exit;
+
+	# send coverage data to coveralls
+	php vendor/bin/coveralls --verbose --exclude-no-stmt
+fi