Travis CI updates for MySQL 5.6 and 8.0

.travis.yml

@@ -4,17 +4,19 @@ language: ruby
 bundler_args: --without benchmarks development
 # Pin Rubygems to a working version. Sometimes it breaks upstream. Update now and then.
 before_install:
-  - gem update --system 2.6.4
+  - gem --version
+  - gem update --system 2.6.7
+  - gem update bundler
   - gem --version
   - bash .travis_setup.sh
 addons:
   hosts:
     - mysql2gem.example.com
   apt:
     packages:
-    - mysql-server-5.5
-    - mysql-client-core-5.5
-    - mysql-client-5.5
+    - mysql-server-5.6
+    - mysql-client-core-5.6
+    - mysql-client-5.6
 rvm:
   - 2.4.0-preview2
   - 2.3.1
@@ -27,10 +29,26 @@ matrix:
   include:
     - rvm: 1.8.7
       dist: precise
+      env: SPEC_OPTS="--order rand:11"
+      addons:
+        hosts:
+          - mysql2gem.example.com
+        apt:
+          packages:
+          - mysql-server-5.5
+          - mysql-client-core-5.5
+          - mysql-client-5.5
     - rvm: ree
       dist: precise
-    - rvm: rbx-2
-      dist: precise
+      env: SPEC_OPTS="--order rand:11"
+      addons:
+        hosts:
+          - mysql2gem.example.com
+        apt:
+          packages:
+          - mysql-server-5.5
+          - mysql-client-core-5.5
+          - mysql-client-5.5
     - rvm: 2.0.0
       env: DB=mariadb55
       addons:
@@ -50,28 +68,34 @@ matrix:
         hosts:
           - mysql2gem.example.com
     - rvm: 2.0.0
-      env: DB=mysql56
+      env: DB=mysql55
       addons:
         hosts:
           - mysql2gem.example.com
         apt:
           packages:
-          - mysql-server-5.6
-          - mysql-client-core-5.6
-          - mysql-client-5.6
+          - mysql-server-5.5
+          - mysql-client-core-5.5
+          - mysql-client-5.5
     - rvm: 2.0.0
       env: DB=mysql57
       addons:
         hosts:
           - mysql2gem.example.com
-        # https://github.com/travis-ci/travis-ci/issues/5122
-        # apt:
-        #   packages:
-        #   - mysql-server-5.7
-        #   - mysql-client-core-5.7
-        #   - mysql-client-5.7
     - rvm: 2.0.0
-      env: DB=mysql55
+      env: DB=mysql80
+      addons:
+        hosts:
+          - mysql2gem.example.com
+    - rvm: 2.0.0
+      env: DB=mysql56
       os: osx
+      addons:
+        hosts:
+          - mysql2gem.example.com
+  fast_finish: true
   allow_failures:
     - rvm: ruby-head
+    - rvm: 2.0.0
+      env: DB=mysql56
+      os: osx

.travis_mysql80.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -eux
+
+apt-get purge -qq '^mysql*' '^libmysql*'
+apt-key adv --keyserver pgp.mit.edu --recv-keys 5072E1F5
+add-apt-repository 'deb http://repo.mysql.com/apt/ubuntu/ trusty mysql-8.0'
+apt-get update -qq
+apt-get install -qq mysql-server libmysqlclient-dev
+
+# https://www.percona.com/blog/2016/03/16/change-user-password-in-mysql-5-7-with-plugin-auth_socket/
+mysql -u root -e "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY ''"

.travis_setup.sh

@@ -7,6 +7,11 @@ if [[ -n ${DB-} && x$DB =~ ^xmysql57 ]]; then
   sudo bash .travis_mysql57.sh
 fi
 
+# Install MySQL 8.0 if DB=mysql80
+if [[ -n ${DB-} && x$DB =~ ^xmysql80 ]]; then
+  sudo bash .travis_mysql80.sh
+fi
+
 # Install MySQL if OS=darwin
 if [[ x$OSTYPE =~ ^xdarwin ]]; then
   brew update