Update bundler before running tests, fixes test run on travis

.gitignore

@@ -7,3 +7,5 @@ pkg/*
 .rbenv-version
 .ruby-gemset
 .ruby-version
+# Appraisal generated lockfiles
+*.gemfile.lock

.travis.yml

@@ -1,4 +1,10 @@
 language: ruby
+# Explicit usage of containerized builds, should provide faster feedback
+# see https://docs.travis-ci.com/user/workers/container-based-infrastructure/
+# and https://docs.travis-ci.com/user/ci-environment/#Virtualization-environments
+sudo: false
+before_install:
+  - gem update bundler
 rvm:
   - 1.9.3
   - 2.0.0

Appraisals

@@ -1,11 +1,11 @@
 appraise "rails-3-2" do
-  gem "activerecord", "3.2.21"
+  gem "activerecord", "~> 3.2.21"
 end
 
 appraise "rails-4-1" do
-  gem "activerecord", "4.1.10"
+  gem "activerecord", "~> 4.1.10"
 end
 
 appraise "rails-4-2" do
-  gem "activerecord", "4.2.1"
+  gem "activerecord", "~> 4.2.1"
 end

Gemfile

@@ -18,5 +18,5 @@ gem "appraisal"
 gem "github_changelog_generator"
 
 group :test do
-	gem "minitest"
+	gem "minitest", "~> 5.0"
 end

gemfiles/rails_3_2.gemfile

@@ -6,10 +6,11 @@ gem "sqlite3", :platforms => [:ruby]
 gem "activerecord-jdbcsqlite3-adapter", :platforms => [:jruby]
 gem "rake"
 gem "appraisal"
-gem "activerecord", "3.2.21"
+gem "github_changelog_generator"
+gem "activerecord", "~> 3.2.21"
 
 group :test do
-  gem "minitest"
+  gem "minitest", "~> 5.0"
 end
 
 platforms :rbx do

gemfiles/rails_4_1.gemfile

@@ -6,10 +6,11 @@ gem "sqlite3", :platforms => [:ruby]
 gem "activerecord-jdbcsqlite3-adapter", :platforms => [:jruby]
 gem "rake"
 gem "appraisal"
-gem "activerecord", "4.1.10"
+gem "github_changelog_generator"
+gem "activerecord", "~> 4.1.10"
 
 group :test do
-  gem "minitest"
+  gem "minitest", "~> 5.0"
 end
 
 platforms :rbx do