retry tests as a workaround for fragile integration tests (closes foodcoops#205)

.travis.yml

@@ -11,4 +11,6 @@ before_script:
   - "mysql -e 'create database foodsoft_test;'"
   - 'printf "test:\n  adapter: mysql2\n  database: foodsoft_test\n  username: travis\n  encoding: utf8\n" >config/database.yml'
   - 'bundle exec rake db:schema:load RAILS_ENV=test'
-script: bundle exec rake spec
+  # add format to get output with rspec-rerun https://github.com/dblock/rspec-rerun/issues/2
+  - 'echo "--color --format progress" >.rspec'
+script: bundle exec rake rspec-rerun:spec

Gemfile

@@ -88,5 +88,6 @@ group :test do
   # need to include rspec components before i18n-spec or rake fails in test environment
   gem 'rspec-core'
   gem 'rspec-expectations'
+  gem 'rspec-rerun'
   gem 'i18n-spec'
 end

Gemfile.lock

@@ -249,6 +249,10 @@ GEM
       redis-namespace (~> 1.2)
       sinatra (>= 0.9.2)
       vegas (~> 0.1.2)
+    rspec (2.14.1)
+      rspec-core (~> 2.14.0)
+      rspec-expectations (~> 2.14.0)
+      rspec-mocks (~> 2.14.0)
     rspec-core (2.14.7)
     rspec-expectations (2.14.4)
       diff-lcs (>= 1.1.3, < 2.0)
@@ -260,6 +264,8 @@ GEM
       rspec-core (~> 2.14.0)
       rspec-expectations (~> 2.14.0)
       rspec-mocks (~> 2.14.0)
+    rspec-rerun (0.1.3)
+      rspec (>= 2.11.0)
     ruby-prof (0.13.0)
     ruby-rc4 (0.1.5)
     rubyzip (1.0.0)
@@ -380,6 +386,7 @@ DEPENDENCIES
   rspec-core
   rspec-expectations
   rspec-rails
+  rspec-rerun
   ruby-prof
   sass-rails (~> 3.2.3)
   select2-rails