add coverage

Author: codercat

.travis.yml

@@ -1,2 +1,7 @@
-language: PHP
-script: true
+language: php
+
+script:
+  - ./vendor/bin/phpunit --coverage-clover=coverage.xml
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

phpunit.xml

@@ -2,9 +2,14 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/7.5/phpunit.xsd"
          bootstrap="vendor/autoload.php">
-  <testsuites>
-    <testsuite name="unit tests">
-        <directory>tests</directory>
-    </testsuite>
-  </testsuites>
+    <filter>
+        <whitelist>
+            <directory>./src</directory>
+        </whitelist>
+    </filter>
+    <testsuites>
+        <testsuite name="unit tests">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
 </phpunit>