[TASK] Add code coverage report

.coveralls.yml

@@ -0,0 +1,3 @@
+service_name: travis-ci
+coverage_clover: coverage.xml
+json_path: coverage.json

.travis.yml

@@ -58,6 +58,17 @@ jobs:
       before_script:
         - composer install
         - composer update
+
+    - &coverage
+      stage: test
+      php: 7.2
+      script:
+        - phpdbg -qrr -d memory_limit=-1 vendor/bin/phpunit -c phpunit.xml.dist --coverage-clover coverage.xml
+        - wget https://github.com/php-coveralls/php-coveralls/releases/download/v2.1.0/php-coveralls.phar
+        - php php-coveralls.phar --verbose
+    - <<: *coverage
+      php: 7.2
+
   allow_failures:
     - php: 7.2
       env: PHPUnit=latest

README.md

@@ -1,4 +1,8 @@
-# TYPO3 Surf - Powerful and flexible deployment tool for PHP projects [![Build Status](https://travis-ci.org/TYPO3/Surf.svg?branch=master)](https://travis-ci.org/TYPO3/Surf)
+[![Build Status](https://img.shields.io/travis/TYPO3/Surf/master.svg?style=flat-square)](https://travis-ci.org/TYPO3/Surf)
+[![Coverage Status](https://img.shields.io/coveralls/TYPO3/Surf/master.svg?style=flat-square)](https://coveralls.io/github/TYPO3/Surf?branch=master)
+[![Downloads](https://img.shields.io/packagist/dt/TYPO3/Surf.svg?style=flat-square)](https://packagist.org/packages/TYPO3/Surf)
+
+# Powerful and flexible deployment tool for PHP projects
 
 ## Description
 

phpunit.xml.dist

@@ -25,14 +25,8 @@
     </testsuites>
 
     <filter>
-        <whitelist>
-            <directory>./</directory>
-            <exclude>
-                <directory>./Documentation</directory>
-                <directory>./Resources</directory>
-                <directory>./tests</directory>
-                <directory>./vendor</directory>
-            </exclude>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./src</directory>
         </whitelist>
     </filter>
 </phpunit>