test mysql 5.7

.travis.yml

@@ -30,6 +30,7 @@ before_install:
 install: composer update $COMPOSER_FLAGS --prefer-dist
 
 before_script:
+  - if [[ $DB == 'mysql' && $MYSQL_VERSION == '5.7']]; then ./tests/travis/install-mysql-5.7.sh; fi
   - if [[ $DB == 'mysql' ]]; then mysql --version; fi
 
 script: ./vendor/bin/phpunit -c tests/travis/$DB.travis.xml
@@ -49,6 +50,9 @@ matrix:
           - mysql-server-5.6
           - mysql-client-core-5.6
           - mysql-client-5.6
+    - php: 7.0
+      env: DB=mysql MYSQL_VERSION=5.7
+      sudo: required
   allow_failures:
     - php: nightly
     - php: hhvm

tests/travis/install-mysql-5.7.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+echo mysql-apt-config mysql-apt-config/select-server select mysql-5.7 | sudo debconf-set-selections
+wget http://dev.mysql.com/get/mysql-apt-config_0.7.3-1_all.deb
+sudo dpkg --install mysql-apt-config_0.7.3-1_all.deb
+sudo apt-get update -q
+sudo apt-get install -q -y -o Dpkg::Options::=--force-confnew mysql-server
+sudo mysql_upgrade