spec test

spec/unit/facter/volume_group_map_spec.rb

@@ -0,0 +1,78 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'volume_group_map fact' do
+  before :each do
+    Facter.clear
+  end
+
+  context 'when not on Linux' do
+    it 'is set to nil' do
+      Facter.fact(:kernel).expects(:value).at_least(1).returns('SunOs')
+      expect(Facter.value(:volume_group_map)).to be_nil
+    end
+  end
+
+  context 'when on Linux' do
+    before :each do
+      Facter.fact(:kernel).expects(:value).at_least(1).returns('Linux')
+    end
+
+    context 'when vgs is absent' do
+      before :each do
+        Facter::Core::Execution.stubs('exec') # All other calls
+        Facter::Core::Execution.expects('which').with('vgs').at_least(1).returns(nil)
+      end
+
+      it 'is set to nil' do
+        expect(Facter.value(:volume_group_map)).to be_nil
+      end
+    end
+
+    context 'when vgs is present' do
+      before :each do
+        Facter::Core::Execution.stubs('exec') # All other calls
+        Facter::Core::Execution.expects('which').with('vgs').at_least(1).returns('/sbin/vgs')
+      end
+
+      it 'is able to resolve vgs and map pvs' do
+        Facter.fact(:volume_groups).expects(:value).returns(
+          {
+            'centos' => {
+              'uuid' => 'ZcFkEG-217a-nnc6-PvWx-oXou-7THt-XR6eci',
+              'attr' => 'wz--n-', 'permissions' => 'writeable',
+              'allocation_policy' => 'normal',
+              'size' => '19.51g',
+              'free' => '44.00m'
+            },
+            'tasks' => {
+              'uuid' => 'tMqdQC-ukEx-bEft-bLk8-WoM1-jX0a-0p1rri',
+              'attr' => 'wz--n-',
+              'permissions' => 'writeable',
+              'allocation_policy' => 'normal',
+              'size' => '3.99g',
+              'free' => '2.82g'
+            }
+          },
+        )
+        vgs_centos_output = <<-OUTPUT
+          /dev/sda
+        OUTPUT
+        vgs_centos_output.dup.lstrip!
+        Facter::Core::Execution.expects(:exec).at_least(1).with('vgs -o pv_name centos --noheading --nosuffix').returns(vgs_centos_output)
+        vgs_tasks_output = <<-OUTPUT
+          /dev/sdc
+          /dev/sdd2
+        OUTPUT
+        vgs_tasks_output.dup.lstrip!
+        Facter::Core::Execution.expects(:exec).at_least(1).with('vgs -o pv_name tasks --noheading --nosuffix').returns(vgs_tasks_output)
+
+        expect(Facter.value(:volume_group_map)).to include(
+          'centos' => '/dev/sda',
+          'tasks' => '/dev/sdc,/dev/sdd2',
+        )
+      end
+    end
+  end
+end