Add server, config and unit tests

Author: TheSmartnik

Gemfile

@@ -5,3 +5,5 @@ gemspec
 
 gem "rake", "~> 12.0"
 gem "rspec", "~> 3.0"
+gem 'rspec-its'
+gem 'pry'

lib/rspec/eth.rb

@@ -2,7 +2,6 @@
 
 module Rspec
   module Eth
-    class Error < StandardError; end
-    # Your code goes here...
+
   end
 end

lib/rspec/eth/config.rb

@@ -0,0 +1,29 @@
+require 'tempfile'
+
+module Rspec
+  module Eth
+    class Config
+      class << self
+        attr_writer :account_keys_path, :port, :host
+
+        def account_keys_path
+          @account_keys_path || accounts_tempfile.path
+        end
+
+        def port
+          @port || 8545
+        end
+
+        def host
+          @host || '127.0.0.1'
+        end
+
+        private
+
+        def accounts_tempfile
+          @accounts_tempfile ||= Tempfile.new('rspec-eth')
+        end
+      end
+    end
+  end
+end

lib/rspec/eth/server.rb

@@ -0,0 +1,32 @@
+module Rspec
+  module Eth
+    class Server
+      class << self
+        attr_accessor :ganache_pid
+
+        def start
+          if !ganache_pid
+            options = ["--quiet", "--account_keys_path #{Config.account_keys_path}", "-p #{Config.port}", "-h #{Config.host}"]
+            self.ganache_pid = Process.spawn("ganache-cli #{options.join(" ")}", out: "/dev/null", err: STDOUT)
+          else
+            warn("Server already runnin")
+          end
+        end
+
+        def stop
+          if ganache_pid
+            Process.kill("TERM", ganache_pid)
+            self.ganache_pid = nil
+          else
+            warn("Server isn't running")
+          end
+        end
+
+        def restart
+          start
+          stop
+        end
+      end
+    end
+  end
+end

rspec-eth.gemspec

@@ -6,16 +6,14 @@ Gem::Specification.new do |spec|
   spec.authors       = ["TheSmartnik"]
   spec.email         = ["[email protected]"]
 
-  spec.summary       = %q{TODO: Write a short summary, because RubyGems requires one.}
-  spec.description   = %q{TODO: Write a longer description or delete this line.}
-  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+  spec.summary       = %q{Write a short summary, because RubyGems requires one.}
+  spec.description   = %q{Write a longer description or delete this line.}
+  # spec.homepage      = "TODO: Put your gem's website or public repo URL here."
   spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
 
-  spec.metadata["allowed_push_host"] = "TODO: Set to 'http://mygemserver.com'"
-
-  spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = "TODO: Put your gem's public repo URL here."
-  spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
+  # spec.metadata["homepage_uri"] = spec.homepage
+  # spec.metadata["source_code_uri"] = "TODO: Put your gem's public repo URL here."
+  # spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.

spec/rspec/unit/eth/config_spec.rb

@@ -0,0 +1,21 @@
+require 'spec_helper'
+require 'rspec/eth/config'
+
+RSpec.describe Rspec::Eth::Config do
+  subject(:config) { described_class }
+
+  describe 'default options' do
+    its(:port) { is_expected.to eq(8545) }
+    its(:host) { is_expected.to eq('127.0.0.1') }
+    it { expect(File.exists?(config.account_keys_path)).to eq(true) }
+  end
+
+  describe 'write' do
+    { port: 8000, host: '8.8.8.8', account_keys_path: '.something' }.each do |option, expectation|
+      it "sets #{option} correctly" do
+        config.public_send("#{option}=", expectation)
+        expect(config.public_send(option)).to eq(expectation)
+      end
+    end
+  end
+end

spec/rspec/unit/eth/server_spec.rb

@@ -0,0 +1,30 @@
+require 'spec_helper'
+require 'rspec/eth/config'
+require 'rspec/eth/server'
+require 'pry'
+
+RSpec.describe Rspec::Eth::Server do
+  subject(:server) { described_class }
+
+  describe 'general behaviour' do
+    describe 'start' do
+      after { server.stop }
+
+      it 'starts server' do
+        expect { server.start }.to change { server.ganache_pid }.from(nil)
+
+        expect(`ps aux | grep #{server.ganache_pid}`).to include("ganache-cli --quiet")
+      end
+    end
+
+    it 'stops server' do
+      server.start
+      expect(`ps aux | grep #{server.ganache_pid}`).to include("ganache-cli --quiet")
+
+      pid = server.ganache_pid
+
+      expect { server.stop }.to change { server.ganache_pid }.to(nil)
+      expect(`ps aux | grep #{pid}`).to_not include("ganache-cli --quiet")
+    end
+  end
+end

spec/spec_helper.rb

@@ -1,5 +1,6 @@
 require "bundler/setup"
 require "rspec/eth"
+require 'rspec/its'
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure