enhance pyvenv tests

spec/acceptance/pyvenv_spec.rb

@@ -143,4 +143,45 @@ class { 'python':
       apply_manifest(pp, catch_changes: true)
     end
   end
+
+  context 'with versioned minimal python::pip and without systempkgs' do
+    it 'works with no errors' do
+      pp = <<-PUPPET
+      class { 'python':
+        version => '3',
+        dev     => 'present',
+      }
+      user { 'agent':
+        ensure         => 'present',
+        managehome     => true,
+        home           => '/opt/agent',
+      }
+      group { 'agent':
+        ensure => 'present',
+        system => true,
+      }
+      python::pyvenv { '/opt/agent/venv':
+        ensure     => 'present',
+        systempkgs => false,
+        owner      => 'agent',
+        group      => 'agent',
+        mode       => '0755',
+      }
+      python::pip { 'agent' :
+        ensure     => '0.1.2',
+        virtualenv => '/opt/agent/venv',
+        owner      => 'agent',
+        group      => 'agent',
+      }
+      PUPPET
+
+      # Run it twice and test for idempotency
+      apply_manifest(pp, catch_failures: true)
+      apply_manifest(pp, catch_changes: true)
+    end
+    describe command('/opt/agent/venv/bin/pip list') do
+      its(:exit_status) { is_expected.to eq 0 }
+      its(:stdout) { is_expected.to match %r{agent.* 0\.1\.2} }
+    end
+  end
 end