include php-cs-fixer test as travis build run

.travis.yml

@@ -12,9 +12,10 @@ env:
 
   global:
     - SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
-    - ENABLE_CODE_COVERAGE="false"
-    - SIMPLE_PHPUNIT_FLAGS="-v"
-
+    - COVERALLS_ENABLED="false"
+    - PHPUNIT_FLAGS="-v"
+    - PHPUNIT_ENABLED="true"
+    - PHPCSFIXER_ENABLED="false"
 
 matrix:
 
@@ -23,6 +24,10 @@ matrix:
   include:
 
     - php: 7.1
+    - php: 7.1
+      env:
+        - PHPUNIT_ENABLED="false"
+        - PHPCSFIXER_ENABLED="true"
     - php: 7.1
       env:
         - SYMFONY_VERSION=4.0.*
@@ -39,8 +44,8 @@ matrix:
         - COMPOSER_UPDATE_FLAGS="--no-dev"
     - php: 7.2
       env:
-        - ENABLE_CODE_COVERAGE="true"
-        - SIMPLE_PHPUNIT_FLAGS="-v --coverage-text --coverage-clover var/build/clover.xml"
+        - COVERALLS_ENABLED="true"
+        - PHPUNIT_FLAGS="-v --coverage-text --coverage-clover var/build/clover.xml"
     - php: 7.2
       env:
         - SYMFONY_VERSION=dev-master
@@ -53,8 +58,8 @@ matrix:
   allow_failures:
 
     - env:
-        - ENABLE_CODE_COVERAGE="true"
-        - SIMPLE_PHPUNIT_FLAGS="-v --coverage-text --coverage-clover var/build/clover.xml"
+        - COVERALLS_ENABLED="true"
+        - PHPUNIT_FLAGS="-v --coverage-text --coverage-clover var/build/clover.xml"
     - env:
         - SYMFONY_VERSION=dev-master
         - STABILITY=dev
@@ -72,10 +77,10 @@ before_install:
   - if [[ "$STABILITY" != "" ]]; then
       travis_retry composer config minimum-stability $STABILITY;
     fi
-  - if [[ "$ENABLE_CODE_COVERAGE" != "true" ]]; then
+  - if [[ "$COVERALLS_ENABLED" != "true" ]]; then
       phpenv config-rm xdebug.ini || true;
     fi
-  - if [[ "$ENABLE_CODE_COVERAGE" == "true" ]]; then
+  - if [[ "$COVERALLS_ENABLED" == "true" ]]; then
       travis_retry composer require --dev satooshi/php-coveralls:^2.0@dev --no-update $COMPOSER_FLAGS;
     fi
 
@@ -88,11 +93,16 @@ install:
 
 script:
 
-  - ./vendor/bin/simple-phpunit $SIMPLE_PHPUNIT_FLAGS
+  - if [[ "$PHPUNIT_ENABLED" == "true" ]]; then
+      ./vendor/bin/simple-phpunit $PHPUNIT_FLAGS;
+    fi
+  - if [[ "$PHPCSFIXER_ENABLED" == "true" ]]; then
+      vendor/bin/php-cs-fixer --dry-run --diff -vvv fix;
+    fi
 
 
 after_success:
 
-  - if [[ "$ENABLE_CODE_COVERAGE" == "true" ]]; then
+  - if [[ "$PHPUNIT_ENABLED" == "true" && "$COVERALLS_ENABLED" == "true" ]]; then
       ./vendor/bin/php-coveralls -vvv --config .coveralls.yml;
     fi;