extract database_cleaner-moped adapter.

Gemfile

@@ -7,4 +7,5 @@ path "./adapters" do
   gem "database_cleaner-mongo"
   gem "database_cleaner-mongoid"
   gem "database_cleaner-mongo_mapper"
+  gem "database_cleaner-moped"
 end

Gemfile.lock

@@ -25,6 +25,9 @@ PATH
       database_cleaner (~> 1.8.0)
       database_cleaner-mongo (~> 1.8.0)
       mongoid
+    database_cleaner-moped (1.8.0)
+      database_cleaner (~> 1.8.0)
+      moped
 
 GEM
   remote: https://rubygems.org/
@@ -276,6 +279,7 @@ DEPENDENCIES
   database_cleaner-mongo!
   database_cleaner-mongo_mapper!
   database_cleaner-mongoid!
+  database_cleaner-moped!
   datamapper
   dm-migrations
   dm-sqlite-adapter

adapters/database_cleaner-moped/.gitignore

@@ -0,0 +1,11 @@
+/.bundle/
+/.yardoc
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/
+
+# rspec failure tracking
+.rspec_status

adapters/database_cleaner-moped/.rspec

@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper

adapters/database_cleaner-moped/.travis.yml

@@ -0,0 +1,5 @@
+sudo: false
+language: ruby
+rvm:
+  - 2.2.9
+before_install: gem install bundler -v 1.16.1

adapters/database_cleaner-moped/Gemfile

@@ -0,0 +1,8 @@
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+# Specify your gem's dependencies in database_cleaner-moped.gemspec
+gemspec
+
+gem "database_cleaner", path: "../.."

adapters/database_cleaner-moped/Gemfile.lock

@@ -0,0 +1,44 @@
+PATH
+  remote: ../..
+  specs:
+    database_cleaner (1.8.0)
+
+PATH
+  remote: .
+  specs:
+    database_cleaner-moped (1.8.0)
+      database_cleaner (~> 1.8.0)
+      moped
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    diff-lcs (1.3)
+    moped (1.5.2)
+    rake (10.4.2)
+    rspec (3.7.0)
+      rspec-core (~> 3.7.0)
+      rspec-expectations (~> 3.7.0)
+      rspec-mocks (~> 3.7.0)
+    rspec-core (3.7.1)
+      rspec-support (~> 3.7.0)
+    rspec-expectations (3.7.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.7.0)
+    rspec-mocks (3.7.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.7.0)
+    rspec-support (3.7.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler (~> 1.16)
+  database_cleaner!
+  database_cleaner-moped!
+  rake (~> 10.0)
+  rspec (~> 3.0)
+
+BUNDLED WITH
+   1.16.1

adapters/database_cleaner-moped/LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2009 Ben Mabey
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

adapters/database_cleaner-moped/README.md

@@ -0,0 +1,39 @@
+# DatabaseCleaner::Moped
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/database_cleaner/moped`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'database_cleaner-moped'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install database_cleaner-moped
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/database_cleaner-moped.
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

adapters/database_cleaner-moped/Rakefile

@@ -0,0 +1,6 @@
+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task :default => :spec

adapters/database_cleaner-moped/bin/console

@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+require "bundler/setup"
+require "database_cleaner/moped"
+
+# You can add fixtures and/or initialization code here to make experimenting
+# with your gem easier. You can also use a different console, if you like.
+
+# (If you use this, don't forget to add pry to your Gemfile!)
+# require "pry"
+# Pry.start
+
+require "irb"
+IRB.start(__FILE__)

adapters/database_cleaner-moped/bin/setup

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+bundle install
+
+# Do any other automated setup that you need to do here

adapters/database_cleaner-moped/database_cleaner-moped.gemspec

@@ -0,0 +1,30 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require "database_cleaner/moped/version"
+
+Gem::Specification.new do |spec|
+  spec.name          = "database_cleaner-moped"
+  spec.version       = DatabaseCleaner::Moped::VERSION
+  spec.authors       = ["Ernesto Tagwerker"]
+  spec.email         = ["ernesto@ombulabs.com"]
+
+  spec.summary       = "Strategies for cleaning databases using Moped. Can be used to ensure a clean state for testing."
+  spec.description   = "Strategies for cleaning databases using Moped. Can be used to ensure a clean state for testing."
+  spec.homepage      = "https://github.com/DatabaseCleaner/database_cleaner-moped"
+  spec.license       = "MIT"
+
+  spec.files         = `git ls-files -z`.split("\x0").reject do |f|
+    f.match(%r{^(test|spec|features)/})
+  end
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "database_cleaner", "~> 1.8.0"
+  spec.add_dependency "moped"
+
+  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "rspec", "~> 3.0"
+end

adapters/database_cleaner-moped/lib/database_cleaner-moped.rb

@@ -0,0 +1 @@
+require "database_cleaner/moped"

adapters/database_cleaner-moped/lib/database_cleaner/moped.rb

@@ -0,0 +1,4 @@
+require "database_cleaner/moped/version"
+require "database_cleaner"
+require "database_cleaner/moped/truncation"
+

adapters/database_cleaner-moped/lib/database_cleaner/moped/base.rb

@@ -0,0 +1,39 @@
+require 'database_cleaner/generic/base'
+
+module DatabaseCleaner
+  module Moped
+    def self.available_strategies
+      %w[truncation]
+    end
+
+    module Base
+      include ::DatabaseCleaner::Generic::Base
+
+      def db=(desired_db)
+        @db = desired_db
+      end
+
+      def db
+        @db ||= :default
+      end
+
+      def host_port=(desired_host)
+        @host = desired_host
+      end
+
+      def host
+        @host ||= '127.0.0.1:27017'
+      end
+
+      def db_version
+        @db_version ||= session.command('buildinfo' => 1)['version']
+      end
+
+      private
+
+      def session
+        @session ||= ::Moped::Session.new([host], database: db)
+      end
+    end
+  end
+end

adapters/database_cleaner-moped/lib/database_cleaner/moped/truncation.rb

@@ -0,0 +1,9 @@
+require 'database_cleaner/moped/truncation_base'
+
+module DatabaseCleaner
+  module Moped
+    class Truncation
+      include ::DatabaseCleaner::Moped::TruncationBase
+    end
+  end
+end

adapters/database_cleaner-moped/lib/database_cleaner/moped/truncation_base.rb

@@ -0,0 +1,44 @@
+require 'database_cleaner/moped/base'
+require 'database_cleaner/generic/truncation'
+
+module DatabaseCleaner
+  module Moped
+    module TruncationBase
+      include ::DatabaseCleaner::Moped::Base
+      include ::DatabaseCleaner::Generic::Truncation
+
+      def clean
+        if @only
+          collections.each { |c| session[c].find.remove_all if @only.include?(c) }
+        else
+          collections.each { |c| session[c].find.remove_all unless @tables_to_exclude.include?(c) }
+        end
+        wait_for_removals_to_finish
+        true
+      end
+
+      private
+
+      def collections
+        if db != :default
+          session.use(db)
+        end
+
+        if db_version.split('.').first.to_i >= 3
+          session.command(listCollections: 1, filter: { 'name' => { '$not' => /.?system\.|\$/ } })['cursor']['firstBatch'].map do |collection|
+            collection['name']
+          end
+        else
+          session['system.namespaces'].find(name: { '$not' => /\.system\.|\$/ }).to_a.map do |collection|
+            _, name = collection['name'].split('.', 2)
+            name
+          end
+        end
+      end
+
+      def wait_for_removals_to_finish
+        session.command(getlasterror: 1)
+      end
+    end
+  end
+end

adapters/database_cleaner-moped/lib/database_cleaner/moped/version.rb

@@ -0,0 +1,5 @@
+module DatabaseCleaner
+  module Moped
+    VERSION = "1.8.0"
+  end
+end

adapters/database_cleaner-moped/spec/database_cleaner/moped/moped_examples.rb

@@ -0,0 +1,32 @@
+module MopedTest
+  class Base
+    def self.collection
+      @db ||= 'database_cleaner_specs'
+      @session ||= ::Moped::Session.new(['127.0.0.1:27017'], database: @db)
+      @collection ||= @session[name]
+    end
+
+    def self.count
+      @collection.find.count
+    end
+
+    def initialize(attrs={})
+      @attrs = attrs
+    end
+
+    def save!
+      self.class.collection.insert(@attrs)
+    end
+  end
+
+  class Widget < Base
+  end
+  class Gadget < Base
+  end
+  class System < Base
+    def self.collection
+      super
+      @collection = @session['system_logs']
+    end
+  end
+end

adapters/database_cleaner-moped/spec/database_cleaner/moped/truncation_spec.rb

@@ -0,0 +1,51 @@
+require 'moped'
+require 'database_cleaner/moped/truncation'
+require File.dirname(__FILE__) + '/moped_examples'
+
+RSpec.describe DatabaseCleaner::Moped::Truncation do
+  around do |example|
+    db_name = 'database_cleaner_specs'
+    session = ::Moped::Session.new(['127.0.0.1:27017'], database: db_name)
+    subject.db = db_name
+
+    example.run
+
+    session.drop
+    session.command(getlasterror: 1)
+  end
+
+  before do
+    MopedTest::Widget.new(name: 'some widget').save!
+    MopedTest::Gadget.new(name: 'some gadget').save!
+    MopedTest::System.new(name: 'some system').save!
+  end
+
+  context "by default" do
+    it "truncates all collections" do
+      expect { subject.clean }.to change {
+        [MopedTest::Widget.count, MopedTest::Gadget.count, MopedTest::System.count]
+      }.from([1,1,1]).to([0,0,0])
+    end
+  end
+
+  context "when collections are provided to the :only option" do
+    subject { described_class.new(only: ['MopedTest::Widget']) }
+
+    it "only truncates the specified collections" do
+      expect { subject.clean }.to change {
+        [MopedTest::Widget.count, MopedTest::Gadget.count, MopedTest::System.count]
+      }.from([1,1,1]).to([0,1,1])
+    end
+  end
+
+  context "when collections are provided to the :except option" do
+    subject { described_class.new(except: ['MopedTest::Widget']) }
+
+    it "truncates all but the specified collections" do
+      expect { subject.clean }.to change {
+        [MopedTest::Widget.count, MopedTest::Gadget.count, MopedTest::System.count]
+      }.from([1,1,1]).to([1,0,0])
+    end
+  end
+end
+

adapters/database_cleaner-moped/spec/spec_helper.rb

@@ -0,0 +1,14 @@
+require "bundler/setup"
+require "database_cleaner/moped"
+
+RSpec.configure do |config|
+  # Enable flags like --only-failures and --next-failure
+  config.example_status_persistence_file_path = ".rspec_status"
+
+  # Disable RSpec exposing methods globally on `Module` and `main`
+  config.disable_monkey_patching!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+end