Example for pairwise test generation

pairwise_spec.rb

# execute via rspec -fd pairwise_spec.rb
# for more info see http://atodorov.org/blog/2017/04/14/testing-red-hat-enterprise-linux-the-microsoft-way/
require 'pairwise'


describe "RHEL 6.9 Tier #2 and #3 testing" do
  context "Test case w/o parameters can't be reduced via pairwise" do
    [
      [%w(x86_64), %w(Server Workstation Client ComputeNode)],
      [%w(i386),   %w(Server Workstation Client)],
      [%w(ppc64 s390x), %w(Server)]
    ].each do |arch, variant|
      # generate pairwise combinations for tests with variations
      Pairwise.combinations(
          ['partitioning / swap on LVM'],
          arch,
          variant
      ).each do |(base_test_case, arch, variant)|
        it "#{arch} #{variant} - #{base_test_case}" do end
      end
    end
  end

  context "Test case(s) with parameters can be reduced by pairwise" do
    [
      [%w(x86_64), %w(Server Workstation Client ComputeNode)],
      [%w(i386),   %w(Server Workstation Client)],
      [%w(ppc64 s390x), %w(Server)]
    ].each do |arch, variant|
      # generate pairwise combinations for tests with variations
      Pairwise.combinations(
          ['rescue mode'],
          %w(LVM RAID),
          %w(plain encrypted),
          arch,
          variant
      ).each do |(base_test_case, partition_type, encryption, arch, variant)|
        it "#{arch} #{variant} - #{base_test_case} / #{partition_type} / #{encryption}" do end
      end
    end
  end
end