test zabbix::server on all supported versions, not only default

spec/acceptance/server_spec.rb

@@ -45,4 +45,57 @@ class { 'postgresql::globals':
       it { is_expected.to be_enabled }
     end
   end
+
+  supported_versions.each do |zabbix_version|
+    # >= 5.2 server packages are not available for RHEL 7
+    next if zabbix_version >= '5.2' && default[:platform] == 'el-7-x86_64'
+
+    context "deploys a zabbix #{zabbix_version} server" do
+      # Using puppet_apply as a helper
+      it 'works idempotently with no errors' do
+        # this is a minimal working example if you've a postgres server
+        # running on another node. multinode testing with beaker is pain,
+        # so we will deploy multiple services into one box
+        # pp = <<-EOS
+        # class { 'zabbix::server':
+        #  manage_database => false,
+        # }
+        # EOS
+
+        # this will actually deploy apache + postgres + zabbix-server + zabbix-web
+        pp = <<-EOS
+          class { 'postgresql::globals':
+            encoding => 'UTF-8',
+            locale   => 'en_US.UTF-8',
+            manage_package_repo => $facts['os']['release']['major'] != '8',
+            manage_dnf_module => $facts['os']['release']['major'] == '8',
+            version => '12',
+          }
+          -> class { 'postgresql::server': }
+          -> class { 'zabbix::database':
+            zabbix_version => "#{zabbix_version}"
+          }
+          -> class { 'zabbix::server':
+            zabbix_version => "#{zabbix_version}"
+          }
+        EOS
+
+        prepare_host
+
+        # Run it twice and test for idempotency
+        apply_manifest(pp, catch_failures: true)
+        apply_manifest(pp, catch_changes: true)
+      end
+
+      # do some basic checks
+      describe package('zabbix-server-pgsql') do
+        it { is_expected.to be_installed }
+      end
+
+      describe service('zabbix-server') do
+        it { is_expected.to be_running }
+        it { is_expected.to be_enabled }
+      end
+    end
+  end
 end