speed up travis, utilize specific phpunit

.travis.yml

@@ -1,3 +1,5 @@
+sudo: false
+
 language: php
 
 php:
@@ -8,7 +10,12 @@ php:
     - 7.0
     - hhvm
 
+cache:
+    directories:
+        - $HOME/.composer/cache/files
+
 env:
+    - COMPOSER_FLAGS="--prefer-lowest"
     - SYMFONY_VERSION="^2.8.2"
     - SYMFONY_VERSION="^2.8.2" COMPOSER_FLAGS="--prefer-lowest"
     - SYMFONY_VERSION="^3.0.1"
@@ -17,10 +24,12 @@ env:
 
 matrix:
     fast_finish: true
+
     allow_failures:
         - php: 7.0
         - php: hhvm
         - env: SYMFONY_VERSION="dev-master"
+
     exclude:
         # Symfony 3.x requires PHP 5.5
         - php: 5.3
@@ -36,11 +45,12 @@ matrix:
         - php: 5.4
           env: SYMFONY_VERSION="dev-master"
 
-sudo: false
+before_install:
+    - composer self-update
+    - if [ "${SYMFONY_VERSION}" != "" ]; then composer require --no-update "symfony/symfony:${SYMFONY_VERSION}"; fi;
 
-before_script:
-  - curl -s http://getcomposer.org/installer | php
-  - php composer.phar require --no-update symfony/symfony:${SYMFONY_VERSION}
-  - php composer.phar install --prefer-source
+install:
+    - composer update ${COMPOSER_FLAGS} --prefer-source
 
-script: phpunit --coverage-text
+script:
+    - vendor/bin/phpunit --colors --coverage-text

composer.json

@@ -8,18 +8,20 @@
     "name": "William Durand",
     "email": "william.durand1@gmail.com"
   }],
+
+  "target-dir": "Propel/PropelBundle",
+  "autoload": {
+    "psr-0": { "Propel\\PropelBundle": "" }
+  },
+
   "require": {
     "symfony/symfony": "^2.8.2|^3.0.1",
-    "symfony/propel1-bridge": "2.7.x-dev|^2.8|^3.0",
+    "symfony/propel1-bridge": "2.7.x-dev",
     "propel/propel1": "~1.6"
   },
   "require-dev": {
     "sensio/framework-extra-bundle": "^3.0.2",
-    "fzaninotto/faker": "dev-master"
-  },
-  "autoload": {
-    "psr-0": { "Propel\\PropelBundle": "" }
-  },
-  "target-dir": "Propel/PropelBundle",
-  "minimum-stability": "dev"
+    "fzaninotto/faker": "dev-master",
+    "phpunit/phpunit": "^4.8.21|^5.0.10"
+  }
 }