Activate ruby 2.1 with rails 4.2 on travis again

.rubocop.yml

@@ -183,3 +183,7 @@ Style/NumericPredicate:
 
 Style/FrozenStringLiteralComment:
   Enabled: false
+
+Rails/HttpPositionalArguments:
+  Exclude:
+    - "spec/controllers/diaspora_federation/fixtures_rails4_spec.rb"

.travis.yml

@@ -3,6 +3,7 @@ language: ruby
 rvm:
   - 2.3.1
   - 2.2.5
+  - 2.1
 
 sudo: false
 cache:
@@ -13,7 +14,7 @@ branches:
     - 'master'
     - 'develop'
 
-before_install: gem install bundler
+before_install: test/scripts/prepare-travis.sh
 bundler_args: "--deployment --without development --jobs=3 --retry=3"
 
-script: bundle exec rake --trace
+script: test/scripts/travis.sh

lib/tasks/rails4.rake

@@ -0,0 +1,15 @@
+if defined?(RSpec)
+  namespace :rails4 do
+    desc "Run all specs that generate fixtures for rspec with rails 4"
+    RSpec::Core::RakeTask.new(:generate_fixtures) do |t|
+      t.rspec_opts = ["--tag fixture4"]
+    end
+
+    desc "Run all specs in spec directory (exluding controller specs)"
+    RSpec::Core::RakeTask.new(:spec) do |task|
+      task.pattern = FileList["spec/**/*_spec.rb"].exclude("spec/controllers/**/*_spec.rb")
+    end
+
+    task test: %w(spec:prepare_db generate_fixtures spec)
+  end
+end

spec/controllers/diaspora_federation/fixtures_rails4_spec.rb

@@ -0,0 +1,21 @@
+module DiasporaFederation
+  describe WebfingerController, type: :controller do
+    routes { DiasporaFederation::Engine.routes }
+
+    it "generates webfinger fixture", fixture4: true, rails4: true do
+      get :legacy_webfinger, q: "alice@localhost:3000"
+      expect(response).to be_success
+      save_fixture(response.body, "legacy-webfinger")
+    end
+  end
+
+  describe HCardController, type: :controller do
+    routes { DiasporaFederation::Engine.routes }
+
+    it "generates hcard fixture", fixture4: true, rails4: true do
+      get :hcard, guid: alice.guid
+      expect(response).to be_success
+      save_fixture(response.body, "hcard")
+    end
+  end
+end

spec/controllers/diaspora_federation/webfinger_controller_spec.rb

@@ -8,7 +8,7 @@ module DiasporaFederation
         WebfingerController.instance_variable_set(:@host_meta_xml, nil) # clear cache
       end
 
-      it "succeeds", fixture: true do
+      it "succeeds", fixture: true, fixture4: true do
         get :host_meta
         expect(response).to be_success
         save_fixture(response.body, "host-meta")

spec/spec_helper.rb

@@ -66,6 +66,8 @@ RSpec.configure do |config|
   config.fixture_path = "#{::Rails.root}/test/fixtures"
   config.global_fixtures = :all
 
+  config.filter_run_excluding rails4: true if Rails::VERSION::MAJOR == 5
+
   # whitelist codeclimate.com so test coverage can be reported
   config.after(:suite) do
     WebMock.disable_net_connect!(allow: "codeclimate.com")

test/dummy/config/environments/test.rb

@@ -13,8 +13,13 @@ Rails.application.configure do
   config.eager_load = false
 
   # Configure static file server for tests with Cache-Control for performance.
-  config.public_file_server.enable  = true
-  config.public_file_server.headers = {"Cache-Control" => "public, max-age=3600"}
+  if Rails::VERSION::MAJOR == 5
+    config.public_file_server.enable  = true
+    config.public_file_server.headers = {"Cache-Control" => "public, max-age=3600"}
+  else
+    config.serve_static_files   = true
+    config.static_cache_control = "public, max-age=3600"
+  end
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true

test/scripts/prepare-travis.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -x
+
+gem install bundler
+
+if [[ ${TRAVIS_RUBY_VERSION} == "2.1" ]]; then
+  # use rails 4 for ruby 2.1, because rails 5 needs ruby >= 2.2.2
+  echo "gem 'rails', '4.2.7.1'" >> Gemfile
+  bundle install --without development --jobs=3 --retry=3
+  bundle update rails
+fi

test/scripts/travis.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -x
+
+if [[ ${TRAVIS_RUBY_VERSION} == "2.1" ]]; then
+  # ruby 2.1
+  export NO_COVERAGE="true" # No coverage for rails 4, because controller specs are disabled
+  bundle exec rake rails4:test --trace
+else
+  # ruby >= 2.2
+  bundle exec rake --trace
+fi