test(map): verify map.jinja dump using _mapdata state

* Semi-automated using https://github.com/myii/ssf-formula/pull/285

test/integration/share/libraries/system.rb

@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+# system.rb -- InSpec resources for system values
+# Author: Daniel Dehennin <daniel.dehennin@ac-dijon.fr>
+# Copyright (C) 2020 Daniel Dehennin <daniel.dehennin@ac-dijon.fr>
+
+class SystemResource < Inspec.resource(1)
+  name 'system'
+
+  attr_reader :platform
+
+  def initialize
+    super
+    @platform = build_platform
+  end
+
+  private
+
+  def build_platform
+    {
+      family: build_platform_family,
+      name: build_platform_name,
+      release: build_platform_release,
+      finger: build_platform_finger
+    }
+  end
+
+  def build_platform_family
+    case inspec.platform[:name]
+    when 'arch', 'gentoo'
+      inspec.platform[:name]
+    else
+      inspec.platform[:family]
+    end
+  end
+
+  def build_platform_name
+    case inspec.platform[:name]
+    when 'amazon', 'oracle'
+      "#{inspec.platform[:name]}linux"
+    when 'windows_8.1_pro', 'windows_server_2019_datacenter'
+      'windows'
+    else
+      inspec.platform[:name]
+    end
+  end
+
+  # rubocop:disable Metrics/MethodLength
+  def build_platform_release
+    case inspec.platform[:name]
+    when 'amazon'
+      # `2018` relase is named `1` in kitchen.yaml
+      inspec.platform[:release].gsub(/2018.*/, '1')
+    when 'arch'
+      'base-latest'
+    when 'gentoo'
+      "#{inspec.platform[:release].split('.')[0]}-#{derive_gentoo_init_system}"
+    when 'windows_8.1_pro'
+      '8.1'
+    when 'windows_server_2019_datacenter'
+      '2019-server'
+    else
+      inspec.platform[:release]
+    end
+  end
+  # rubocop:enable Metrics/MethodLength
+
+  def derive_gentoo_init_system
+    case inspec.command('systemctl').exist?
+    when true
+      'sysd'
+    else
+      'sysv'
+    end
+  end
+
+  def build_platform_finger
+    "#{build_platform_name}-#{build_finger_release}"
+  end
+
+  def build_finger_release
+    case inspec.platform[:name]
+    when 'ubuntu'
+      build_platform_release.split('.').slice(0, 2).join('.')
+    else
+      build_platform_release.split('.')[0]
+    end
+  end
+end