diff --git a/test/unit/vagrant/bundler_test.rb b/test/unit/vagrant/bundler_test.rb
new file mode 100644
index 000000000..9f5c6638b
--- /dev/null
+++ b/test/unit/vagrant/bundler_test.rb
@@ -0,0 +1,130 @@
+require "tmpdir"
+require_relative "../base"
+
+require "vagrant/bundler"
+
+describe Vagrant::Bundler do
+  include_context "unit"
+
+  let(:iso_env) { isolated_environment }
+  let(:env) { iso_env.create_vagrant_env }
+  let(:subject) { Vagrant::Bundler.instance }
+
+  before do
+    @tmpdir = Dir.mktmpdir("vagrant-bundler-test")
+    @vh = ENV["VAGRANT_HOME"]
+    ENV["VAGRANT_HOME"] = @tmpdir
+  end
+
+  after do
+    ENV["VAGRANT_HOME"] = @vh
+    FileUtils.rm_rf(@tmpdir)
+  end
+
+  it "should isolate gem path based on Ruby version" do
+    expect(subject.plugin_gem_path.to_s).to end_with(RUBY_VERSION)
+  end
+
+  it "should not have an env_plugin_gem_path by default" do
+    expect(subject.env_plugin_gem_path).to be_nil
+  end
+
+  describe "#deinit" do
+    it "should provide method for backwards compatibility" do
+      subject.deinit
+    end
+  end
+
+  describe "#install" do
+    let(:plugins){ {"my-plugin" => {"gem_version" => "> 0"}} }
+
+    it "should pass plugin information hash to internal install" do
+      expect(subject).to receive(:internal_install).with(plugins, any_args)
+      subject.install(plugins)
+    end
+
+    it "should not include any update plugins" do
+      expect(subject).to receive(:internal_install).with(anything, nil, any_args)
+      subject.install(plugins)
+    end
+
+    it "should flag local when local is true" do
+      expect(subject).to receive(:internal_install).with(any_args, env_local: true)
+      subject.install(plugins, true)
+    end
+
+    it "should not flag local when local is not set" do
+      expect(subject).to receive(:internal_install).with(any_args, env_local: false)
+      subject.install(plugins)
+    end
+  end
+
+  describe "#install_local" do
+    let(:plugin_source){ double("plugin_source", spec: plugin_spec) }
+    let(:plugin_spec){ double("plugin_spec", name: plugin_name, version: plugin_version) }
+    let(:plugin_name){ "PLUGIN_NAME" }
+    let(:plugin_version){ "1.0.0" }
+    let(:plugin_path){ "PLUGIN_PATH" }
+    let(:sources){ "SOURCES" }
+
+    before do
+      allow(Gem::Source::SpecificFile).to receive(:new).and_return(plugin_source)
+      allow(subject).to receive(:internal_install)
+    end
+
+    it "should return plugin gem specification" do
+      expect(subject.install_local(plugin_path)).to eq(plugin_spec)
+    end
+
+    it "should set custom sources" do
+      expect(subject).to receive(:internal_install) do |info, update, opts|
+        expect(info[plugin_name]["sources"]).to eq(sources)
+      end
+      subject.install_local(plugin_path, sources: sources)
+    end
+
+    it "should not set the update parameter" do
+      expect(subject).to receive(:internal_install) do |info, update, opts|
+        expect(update).to be_nil
+      end
+      subject.install_local(plugin_path)
+    end
+
+    it "should not set plugin as environment local by default" do
+      expect(subject).to receive(:internal_install) do |info, update, opts|
+        expect(opts[:env_local]).to be_falsey
+      end
+      subject.install_local(plugin_path)
+    end
+
+    it "should set if plugin is environment local" do
+      expect(subject).to receive(:internal_install) do |info, update, opts|
+        expect(opts[:env_local]).to be_truthy
+      end
+      subject.install_local(plugin_path, env_local: true)
+    end
+  end
+
+  describe "#update" do
+    let(:plugins){ :plugins }
+    let(:specific){ [] }
+
+    after{ subject.update(plugins, specific) }
+
+    it "should mark update as true" do
+      expect(subject).to receive(:internal_install) do |info, update, opts|
+        expect(update).to be_truthy
+      end
+    end
+
+    context "with specific plugins named" do
+      let(:specific){ ["PLUGIN_NAME"] }
+
+      it "should set update to specific names" do
+        expect(subject).to receive(:internal_install) do |info, update, opts|
+          expect(update[:gems]).to eq(specific)
+        end
+      end
+    end
+  end
+end