(FM-2445) Features tests without instances installed

 - Previously, tests relied on the assumption that SQL Server instances
   were installed already.  Add a new test that verifies all shared
   features can be installed through a manifest, even with no SQL
   instances installed.

Author: Iristyle

spec/acceptance/sqlserver_features_spec.rb

@@ -233,4 +233,36 @@ def bind_and_apply_failing_manifest(host, features, ensure_val = 'present')
       ensure_sql_features(host, features)
     end
   end
+
+  context 'with no installed instances' do
+
+    context 'can install' do
+
+      features = ['Tools', 'BC', 'Conn', 'SSMS', 'ADV_SSMS', 'SDK', 'IS', 'MDS']
+
+      before(:all) do
+        # this assumes that only default MSSQLSERVER has been installed so far
+        # be careful about running tests out of sequence
+        remove_sql_instances(host, {:version => version, :instance_names => ['MSSQLSERVER']})
+      end
+
+      after(:all) do
+        remove_sql_features(host, {:features => features, :version => version})
+      end
+
+      it 'all possible features' do
+        ensure_sql_features(host, features)
+
+        validate_sql_install(host, {:version => version}) do |r|
+          expect(r.stdout).to match(/Management Tools - Basic/)
+          expect(r.stdout).to match(/Management Tools - Complete/)
+          expect(r.stdout).to match(/Client Tools Connectivity/)
+          expect(r.stdout).to match(/Client Tools Backwards Compatibility/)
+          expect(r.stdout).to match(/Client Tools SDK/)
+          expect(r.stdout).to match(/Integration Services/)
+          expect(r.stdout).to match(/Master Data Services/)
+        end
+      end
+    end
+  end
 end

spec/sql_testing_helpers.rb

@@ -123,6 +123,14 @@ def remove_sql_features(host, opts = {})
   on(host, "cmd.exe /c \"#{cmd}\"", {:acceptable_exit_codes => [0, 1, 2]})
 end
 
+def remove_sql_instances(host, opts = {})
+  bootstrap_dir, setup_dir = get_install_paths(opts[:version])
+  opts[:instance_names].each do |instance_name|
+    cmd = "cd \\\"#{setup_dir}\\\" && setup.exe /Action=uninstall /Q /IACCEPTSQLSERVERLICENSETERMS /FEATURES=SQL,AS,RS /INSTANCENAME=#{instance_name}"
+    on(host, "cmd.exe /c \"#{cmd}\"", {:acceptable_exit_codes => [0]})
+  end
+end
+
 def get_install_paths(version)
   vers = { '2012' => '110', '2014' => '120' }