[Tests] [CI] [Dependencies] Refactored Travis config to use simple-phpunit and remove phpunit Composer dependency

.travis.yml

@@ -2,32 +2,41 @@ sudo: false
 
 language: php
 
-php:
-  - 7.1
-  - 7.2
-
 cache:
   directories:
-    - $HOME/.composer/cache/files
+    - $HOME/.composer/cache
 
 env:
   global:
-    - SYMFONY_DEPRECATIONS_HELPER=weak
-    - SYMFONY_VERSION=3.4.*
+    - SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
 
 matrix:
-  include:
-    - env: SYMFONY_VERSION=4.0.*
   fast_finish: true
-
+  include:
+    - php: 7.1
+      env: SYMFONY_VERSION=4.0.*
+    - php: 7.1
+      env: SYMFONY_VERSION=3.4.*
+    - php: 7.2
+      env: SYMFONY_VERSION=4.0.*
+    - php: 7.2
+      env: SYMFONY_VERSION=3.4.*
+    - php: 7.2
+      env: SYMFONY_VERSION=dev-master
+    - php: nightly
+      env: SYMFONY_VERSION=4.0.*
+  allow_failures: 
+    - env: SYMFONY_VERSION=dev-master
+    - php: nightly
+
 before_install:
   - bash ./.travis/exec-before.bash
 
 install:
   - travis_retry composer require "symfony/symfony:${SYMFONY_VERSION}" $COMPOSER_FLAGS
 
 script:
-  - ./vendor/bin/simple-phpunit -vvv || ./vendor/bin/phpunit -vvv
+  - ./vendor/bin/simple-phpunit -vvv
 
 after_script:
-  - bash ./.travis/exec-after.bash
+  - bash ./.travis/exec-after.bash

composer.json

@@ -38,7 +38,6 @@
         "enqueue/enqueue-bundle": "^0.7|^0.8",
         "friendsofphp/php-cs-fixer": "^1.0|^2.0",
         "league/flysystem": "^1.0",
-        "phpunit/phpunit": "^6.0",
         "psr/log": "^1.0",
         "satooshi/php-coveralls": "^1.0",
         "symfony/browser-kit": "^3.0|^4.0",