Introduce an integration with code coverage tracking service

Author: sibprogrammer

.gitignore

@@ -4,3 +4,4 @@
 # tests
 /phpunit.xml
 /.phpunit.result.cache
+/coverage.xml

.travis.yml

@@ -3,3 +3,6 @@ services: docker
 script:
   - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
   - docker-compose run tests
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

Dockerfile

@@ -3,4 +3,7 @@ FROM php:7.3-cli
 RUN apt-get update \
     && apt-get install -y unzip \
     && docker-php-ext-install pcntl \
+    && pecl install xdebug \
+    && echo "zend_extension=xdebug.so" > /usr/local/etc/php/conf.d/xdebug.ini \
+    && echo "xdebug.mode=coverage" >> /usr/local/etc/php/conf.d/xdebug.ini \
     && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

phpunit.xml.dist

@@ -22,4 +22,8 @@
         <env name="REMOTE_URL" value=""/>
         <env name="REMOTE_PASSWORD" value=""/>
     </php>
+
+    <logging>
+        <log type="coverage-clover" target="coverage.xml"/>
+    </logging>
 </phpunit>