extract database_cleaner-neo4j adapter.

Gemfile

@@ -8,4 +8,5 @@ path "./adapters" do
   gem "database_cleaner-mongoid"
   gem "database_cleaner-mongo_mapper"
   gem "database_cleaner-moped"
+  gem "database_cleaner-neo4j"
 end

Gemfile.lock

@@ -28,6 +28,9 @@ PATH
     database_cleaner-moped (1.8.0)
       database_cleaner (~> 1.8.0)
       moped
+    database_cleaner-neo4j (1.8.0)
+      database_cleaner (~> 1.8.0)
+      neo4j-core
 
 GEM
   remote: https://rubygems.org/
@@ -280,6 +283,7 @@ DEPENDENCIES
   database_cleaner-mongo_mapper!
   database_cleaner-mongoid!
   database_cleaner-moped!
+  database_cleaner-neo4j!
   datamapper
   dm-migrations
   dm-sqlite-adapter

adapters/database_cleaner-neo4j/.gitignore

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

adapters/database_cleaner-neo4j/.rspec

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

adapters/database_cleaner-neo4j/.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-neo4j/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-neo4j.gemspec
+gemspec
+
+gem "database_cleaner", path: "../.."

adapters/database_cleaner-neo4j/Gemfile.lock

@@ -0,0 +1,70 @@
+PATH
+  remote: ../..
+  specs:
+    database_cleaner (1.8.0)
+
+PATH
+  remote: .
+  specs:
+    database_cleaner-neo4j (1.8.0)
+      database_cleaner (~> 1.8.0)
+      neo4j-core
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (3.0.0)
+    diff-lcs (1.3)
+    faraday (0.9.0)
+      multipart-post (>= 1.2, < 3)
+    faraday_middleware (0.9.1)
+      faraday (>= 0.7.4, < 0.10)
+    httparty (0.13.3)
+      json (~> 1.8)
+      multi_xml (>= 0.5.2)
+    httpclient (2.5.3.3)
+    json (1.8.6)
+    multi_xml (0.5.5)
+    multipart-post (2.0.0)
+    neo4j-community (2.1.5)
+    neo4j-core (3.0.8)
+      activesupport
+      faraday (~> 0.9.0)
+      faraday_middleware (~> 0.9.1)
+      httparty
+      httpclient
+      json
+      neo4j-community (~> 2.1.1)
+      net-http-persistent
+      os
+      zip
+    net-http-persistent (2.9.4)
+    os (0.9.6)
+    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)
+    zip (2.0.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler (~> 1.16)
+  database_cleaner!
+  database_cleaner-neo4j!
+  rake (~> 10.0)
+  rspec (~> 3.0)
+
+BUNDLED WITH
+   1.16.1

adapters/database_cleaner-neo4j/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-neo4j/README.md

@@ -0,0 +1,39 @@
+# DatabaseCleaner::Neo4j
+
+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/neo4j`. 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-neo4j'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install database_cleaner-neo4j
+
+## 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-neo4j.
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

adapters/database_cleaner-neo4j/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-neo4j/bin/console

@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+require "bundler/setup"
+require "database_cleaner/neo4j"
+
+# 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-neo4j/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-neo4j/database_cleaner-neo4j.gemspec

@@ -0,0 +1,30 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require "database_cleaner/neo4j/version"
+
+Gem::Specification.new do |spec|
+  spec.name          = "database_cleaner-neo4j"
+  spec.version       = DatabaseCleaner::Neo4j::VERSION
+  spec.authors       = ["Ernesto Tagwerker"]
+  spec.email         = ["ernesto@ombulabs.com"]
+
+  spec.summary       = "Strategies for cleaning databases using Neo4j. Can be used to ensure a clean state for testing."
+  spec.description   = "Strategies for cleaning databases using Neo4j. Can be used to ensure a clean state for testing."
+  spec.homepage      = "https://github.com/DatabaseCleaner/database_cleaner-neo4j"
+  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 "neo4j-core"
+
+  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-neo4j/lib/database_cleaner-neo4j.rb

@@ -0,0 +1 @@
+require "database_cleaner/neo4j"

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j.rb

@@ -0,0 +1,6 @@
+require "database_cleaner/neo4j/version"
+require "database_cleaner"
+require "database_cleaner/neo4j/transaction"
+require "database_cleaner/neo4j/truncation"
+require "database_cleaner/neo4j/deletion"
+

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j/base.rb

@@ -0,0 +1,62 @@
+require 'database_cleaner/generic/base'
+module DatabaseCleaner
+  module Neo4j
+    def self.available_strategies
+      %w[transaction truncation deletion]
+    end
+
+    module Base
+      include ::DatabaseCleaner::Generic::Base
+
+      def db=(desired_db)
+        @db = desired_db == :default ? nil : desired_db
+      end
+
+      def db
+        @db ||= nil
+      end
+
+      def start
+        if db_type == :embedded_db and not session.running?
+          session.start
+        else
+          session
+        end
+      end
+
+      def database
+        db && default_db.merge(db) || default_db
+      end
+
+      private
+
+      def default_db
+        {:type => default_db_type, :path => default_db_path}
+      end
+
+      def default_db_type
+        :server_db
+      end
+
+      def default_db_path(type = default_db_type)
+        type == :server_db ? 'http://localhost:7475/' : './db/test'
+      end
+
+      def db_type
+        database[:type]
+      end
+
+      def db_path
+        database[:path]
+      end
+
+      def db_params
+        database.reject!{|key, value| [:type, :path].include? key }
+      end
+
+      def session
+        @session ||= ::Neo4j::Session.open(db_type, db_path, db_params)
+      end
+    end
+  end
+end

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j/deletion.rb

@@ -0,0 +1,16 @@
+require 'database_cleaner/neo4j/base'
+require 'neo4j-core'
+
+module DatabaseCleaner
+  module Neo4j
+    class Deletion
+      include ::DatabaseCleaner::Neo4j::Base
+
+      def clean
+        ::Neo4j::Transaction.run do
+          session._query('MATCH (n) OPTIONAL MATCH (n)-[r]-() DELETE n,r')
+        end
+      end
+    end
+  end
+end

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j/transaction.rb

@@ -0,0 +1,35 @@
+require 'database_cleaner/neo4j/base'
+require 'database_cleaner/generic/transaction'
+require 'neo4j-core'
+
+module DatabaseCleaner
+  module Neo4j
+    class Transaction
+      include ::DatabaseCleaner::Generic::Transaction
+      include ::DatabaseCleaner::Neo4j::Base
+
+      attr_accessor :tx
+
+      def start
+        super
+        rollback
+        self.tx = ::Neo4j::Transaction.new
+      end
+
+      def clean
+        rollback
+      end
+
+      private
+
+      def rollback
+        if tx
+          tx.failure
+          tx.close
+        end
+      ensure
+        self.tx = nil
+      end
+    end
+  end
+end

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j/truncation.rb

@@ -0,0 +1,9 @@
+require 'database_cleaner/neo4j/base'
+require 'database_cleaner/neo4j/deletion'
+
+module DatabaseCleaner
+  module Neo4j
+    class Truncation < DatabaseCleaner::Neo4j::Deletion
+    end
+  end
+end

adapters/database_cleaner-neo4j/lib/database_cleaner/neo4j/version.rb

@@ -0,0 +1,5 @@
+module DatabaseCleaner
+  module Neo4j
+    VERSION = "1.8.0"
+  end
+end

adapters/database_cleaner-neo4j/spec/database_cleaner/neo4j/base_spec.rb

@@ -0,0 +1,42 @@
+require 'database_cleaner/neo4j/base'
+require 'database_cleaner/spec'
+
+module DatabaseCleaner
+  RSpec.describe Neo4j do
+    it { is_expected.to respond_to(:available_strategies) }
+  end
+
+  module Neo4j
+    class ExampleStrategy
+      include ::DatabaseCleaner::Neo4j::Base
+    end
+
+    RSpec.describe ExampleStrategy do
+
+      it_should_behave_like "a generic strategy"
+      it { is_expected.to respond_to(:db) }
+      it { is_expected.to respond_to(:db=) }
+
+      it "should store my describe db" do
+        db_conf = {:connection => {:type => :server_db, :path => 'http://localhost:7474'}}
+        subject.db = db_conf
+        expect(subject.db).to eq db_conf
+      end
+
+      it "should respect additional connection parameters" do
+        db_conf = {:type => :server_db, :path => 'http://localhost:7474', basic_auth: {username: 'user', password: 'pass'}}
+        subject.db = db_conf
+        expect(stub_const("Neo4j::Session", double())).to receive(:open).with(:server_db, 'http://localhost:7474', {basic_auth: {username: 'user', password: 'pass'}}) { true }
+        subject.start
+      end
+
+      it "should default to nil" do
+        expect(subject.db).to be_nil
+      end
+
+      it "should return default configuration" do
+        expect(subject.database).to eq(:type => :server_db, :path => 'http://localhost:7475/')
+      end
+    end
+  end
+end

adapters/database_cleaner-neo4j/spec/database_cleaner/neo4j/transaction_spec.rb

@@ -0,0 +1,25 @@
+require 'neo4j-core'
+require 'database_cleaner/neo4j/transaction'
+require 'database_cleaner/spec'
+
+module DatabaseCleaner
+  module Neo4j
+
+    RSpec.describe Transaction do
+      before(:all) do
+        DatabaseCleaner[:neo4j, :connection => {:type => :server_db, :path => 'http://localhost:7474'}]
+      end
+
+      it_should_behave_like "a generic strategy"
+      it_should_behave_like "a generic transaction strategy"
+
+      describe "start" do
+        it "should start a transaction"
+      end
+
+      describe "clean" do
+        it "should finish a transaction"
+      end
+    end
+  end
+end

adapters/database_cleaner-neo4j/spec/spec_helper.rb

@@ -0,0 +1,14 @@
+require "bundler/setup"
+require "database_cleaner/neo4j"
+
+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

features/cleaning.feature

@@ -20,6 +20,9 @@ Feature: database cleaning
     | DataMapper   | truncation  |
     | Mongoid      | truncation  |
     | MongoMapper  | truncation  |
+    | Neo4j        | deletion    |
+    | Neo4j        | truncation  |
+    | Neo4j        | transaction |
 
   Scenario Outline: ruby app
     Given I am using <ORM>

features/cleaning_default_strategy.feature

@@ -17,6 +17,7 @@ Feature: database cleaning
     | DataMapper   |
     | Mongoid      |
     | MongoMapper  |
+    | Neo4j        |
 
   Scenario Outline: ruby app
     Given I am using <ORM>

features/cleaning_multiple_orms.feature

@@ -15,22 +15,32 @@ Feature: database cleaning using multiple ORMs
     | ActiveRecord | DataMapper   |
     | ActiveRecord | Mongoid      |
     | ActiveRecord | MongoMapper  |
+    | ActiveRecord | Neo4j        |
     | CouchPotato  | ActiveRecord |
     | CouchPotato  | DataMapper   |
     | CouchPotato  | Mongoid      |
     | CouchPotato  | MongoMapper  |
+    | CouchPotato  | Neo4j        |
     | DataMapper   | ActiveRecord |
     | DataMapper   | CouchPotato  |
     | DataMapper   | Mongoid      |
     | DataMapper   | MongoMapper  |
+    | DataMapper   | Neo4j        |
     | Mongoid      | ActiveRecord |
     | Mongoid      | CouchPotato  |
     | Mongoid      | DataMapper   |
     | Mongoid      | MongoMapper  |
+    | Mongoid      | Neo4j        |
     | MongoMapper  | ActiveRecord |
     | MongoMapper  | CouchPotato  |
     | MongoMapper  | DataMapper   |
     | MongoMapper  | Mongoid      |
+    | MongoMapper  | Neo4j        |
+    | Neo4j        | ActiveRecord |
+    | Neo4j        | CouchPotato  |
+    | Neo4j        | DataMapper   |
+    | Neo4j        | Mongoid      |
+    | Neo4j        | MongoMapper  |
 
   Scenario Outline: ruby app
     Given I am using <ORM1> and <ORM2>