diff --git a/test/unit/plugins/provisioners/chef/config/chef_solo_test.rb b/test/unit/plugins/provisioners/chef/config/chef_solo_test.rb
new file mode 100644
index 000000000..d6a2a03af
--- /dev/null
+++ b/test/unit/plugins/provisioners/chef/config/chef_solo_test.rb
@@ -0,0 +1,147 @@
+require_relative "../../../../base"
+
+require Vagrant.source_root.join("plugins/provisioners/chef/config/chef_solo")
+
+describe VagrantPlugins::Chef::Config::ChefSolo do
+  include_context "unit"
+
+  subject { described_class.new }
+
+  let(:machine) { double("machine") }
+
+  describe "#cookbooks_path" do
+    it "defaults to something" do
+      subject.finalize!
+      expect(subject.cookbooks_path).to eq([
+        [:host, "cookbooks"],
+        [:vm, "cookbooks"],
+      ])
+    end
+  end
+
+  describe "#data_bags_path" do
+    it "defaults to an empty array" do
+      subject.finalize!
+      expect(subject.data_bags_path).to be_a(Array)
+      expect(subject.data_bags_path).to be_empty
+    end
+  end
+
+  describe "#environments_path" do
+    it "defaults to an empty array" do
+      subject.finalize!
+      expect(subject.environments_path).to be_a(Array)
+      expect(subject.environments_path).to be_empty
+    end
+
+    it "merges deeply nested paths" do
+      subject.environments_path = ["/foo", "/bar", ["/zip"]]
+      subject.finalize!
+      expect(subject.environments_path)
+        .to eq([:host, :host, :host].zip %w(/foo /bar /zip))
+    end
+  end
+
+  describe "#recipe_url" do
+    it "defaults to nil" do
+      subject.finalize!
+      expect(subject.recipe_url).to be(nil)
+    end
+  end
+
+  describe "#roles_path" do
+    it "defaults to an empty array" do
+      subject.finalize!
+      expect(subject.roles_path).to be_a(Array)
+      expect(subject.roles_path).to be_empty
+    end
+  end
+
+  describe "#synced_folder_type" do
+    it "defaults to nil" do
+      subject.finalize!
+      expect(subject.synced_folder_type).to be(nil)
+    end
+  end
+
+  describe "#validate" do
+    before do
+      allow(machine).to receive(:env)
+        .and_return(double("env",
+          root_path: "",
+        ))
+
+      subject.cookbooks_path = ["/cookbooks", "/more/cookbooks"]
+    end
+
+    let(:result) { subject.validate(machine) }
+    let(:errors) { result["chef solo provisioner"] }
+
+    context "when the cookbooks_path is nil" do
+      it "returns an error" do
+        subject.cookbooks_path = nil
+        subject.finalize!
+        expect(errors).to eq [I18n.t("vagrant.config.chef.cookbooks_path_empty")]
+      end
+    end
+
+    context "when the cookbooks_path is an empty array" do
+      it "returns an error" do
+        subject.cookbooks_path = []
+        subject.finalize!
+        expect(errors).to eq [I18n.t("vagrant.config.chef.cookbooks_path_empty")]
+      end
+    end
+
+    context "when the cookbooks_path is an array with nil" do
+      it "returns an error" do
+        subject.cookbooks_path = [nil, nil]
+        subject.finalize!
+        expect(errors).to eq [I18n.t("vagrant.config.chef.cookbooks_path_empty")]
+      end
+    end
+
+    context "when environments is given" do
+      before do
+        subject.environment = "production"
+      end
+
+      context "when the environments_path is nil" do
+        it "returns an error" do
+          subject.environments_path = nil
+          subject.finalize!
+          expect(errors).to eq [I18n.t("vagrant.config.chef.environment_path_required")]
+        end
+      end
+
+      context "when the environments_path is an empty array" do
+        it "returns an error" do
+          subject.environments_path = []
+          subject.finalize!
+          expect(errors).to eq [I18n.t("vagrant.config.chef.environment_path_required")]
+        end
+      end
+
+      context "when the environments_path is an array with nil" do
+        it "returns an error" do
+          subject.environments_path = [nil, nil]
+          subject.finalize!
+          expect(errors).to eq [I18n.t("vagrant.config.chef.environment_path_required")]
+        end
+      end
+
+      context "when the environments_path does not exist" do
+        it "returns an error" do
+          env_path = "/path/to/environments/that/will/never/exist"
+          subject.environments_path = env_path
+          subject.finalize!
+          expect(errors).to eq [
+            I18n.t("vagrant.config.chef.environment_path_missing",
+              path: env_path
+            )
+          ]
+        end
+      end
+    end
+  end
+end