Add tests for Chef Zero config

test/unit/plugins/provisioners/chef/config/chef_zero_test.rb

@@ -0,0 +1,19 @@
+require_relative "../../../../base"
+
+require Vagrant.source_root.join("plugins/provisioners/chef/config/chef_zero")
+
+describe VagrantPlugins::Chef::Config::ChefZero do
+  include_context "unit"
+
+  subject { described_class.new }
+
+  let(:machine) { double("machine") }
+
+  describe "#nodes_path" do
+    it "defaults to an array" do
+      subject.finalize!
+      expect(subject.nodes_path).to be_a(Array)
+      expect(subject.nodes_path).to be_empty
+    end
+  end
+end