Add basic spec test for trigger class

test/unit/vagrant/plugin/v2/trigger_test.rb

@@ -0,0 +1,68 @@
+require File.expand_path("../../../../base", __FILE__)
+
+describe Vagrant::Plugin::V2::Trigger do
+  include_context "unit"
+
+  let(:iso_env) do
+    # We have to create a Vagrantfile so there is a root path
+    isolated_environment.tap do |env|
+      env.vagrantfile("")
+    end
+  end
+  let(:iso_vagrant_env) { iso_env.create_vagrant_env }
+  let(:machine) { iso_vagrant_env.machine(iso_vagrant_env.machine_names[0], :dummy) }
+  let(:config)  { double("config") } # actually flush this out into a trigger config
+  let(:env) { {
+    machine: machine,
+    ui: Vagrant::UI::Silent.new,
+  } }
+
+
+  let(:subject) { described_class.new(env, config, machine) }
+
+  context "firing before triggers" do
+  end
+
+  context "firing after triggers" do
+  end
+
+  context "filtering triggers" do
+  end
+
+  context "firing triggers" do
+  end
+
+  context "executing info" do
+    let(:message) { "Printing some info" }
+
+    it "prints messages at INFO" do
+      output = ""
+      allow(machine.ui).to receive(:info) do |data|
+        output << data
+      end
+
+      subject.send(:info, message)
+      expect(output).to include(message)
+    end
+  end
+
+  context "executing warn" do
+    let(:message) { "Printing some warnings" }
+
+    it "prints messages at WARN" do
+      output = ""
+      allow(machine.ui).to receive(:warn) do |data|
+        output << data
+      end
+
+      subject.send(:warn, message)
+      expect(output).to include(message)
+    end
+  end
+
+  context "executing run" do
+  end
+
+  context "executing run_remote" do
+  end
+end