Merge pull request #11591 from soapy1/test-docker-provisioner-caps

Test docker installer and ensure that all caps are valid

test/unit/plugins/provisioners/docker/installer_test.rb

@@ -0,0 +1,47 @@
+require File.expand_path("../../../../base", __FILE__)
+
+require Vagrant.source_root.join("plugins/provisioners/docker/provisioner")
+
+describe VagrantPlugins::DockerProvisioner::Installer do
+  include_context "unit"
+  subject { described_class.new(machine) }
+
+  let(:iso_env) do
+    # We have to create a Vagrantfile so there is a root path
+    env = isolated_environment
+    env.vagrantfile("")
+    env.create_vagrant_env
+  end
+
+  let(:machine) { iso_env.machine(iso_env.machine_names[0], :dummy) }
+  let(:communicator) { double("comm") }
+
+  before do
+    allow(machine).to receive(:communicate).and_return(communicator)
+
+    allow(communicator).to receive(:ready?).and_return(true)
+    allow(communicator).to receive(:test).with(/Linux/).and_return(true)
+  end
+
+  describe "#ensure_installed" do
+    it "returns if docker capability not present" do
+      allow(machine).to receive_message_chain(:guest, :capability?).with(:docker_installed).and_return(false)
+      expect(subject.ensure_installed()).to eq(false)
+    end
+
+    it "does not install docker if already present" do
+      expect(communicator).to receive(:test).with(/docker/, {:sudo=>true}).and_return(true)
+      allow(communicator).to receive(:test).and_return(true)
+      expect(subject.ensure_installed()).to eq(true)
+    end
+
+    it "installs docker if not present" do
+      expect(communicator).to receive(:test).with(/docker/, {:sudo=>true}).and_return(false).at_least(:twice)
+      # Will execute sudo commands to install
+      expect(communicator).to receive(:sudo).at_least(:once)
+      # Expect to raise error since we are mocking out the test for docker install to return false
+      expect {subject.ensure_installed()}.to raise_error(VagrantPlugins::DockerProvisioner::DockerError)
+    end
+  end
+
+end

test/unit/plugins/provisioners/docker/plugin_test.rb

@@ -0,0 +1,16 @@
+require File.expand_path("../../../../base", __FILE__)
+
+require Vagrant.source_root.join("plugins/provisioners/docker/provisioner")
+
+describe VagrantPlugins::DockerProvisioner::Plugin do
+  subject { described_class }
+
+  it "has valid guest capabilities" do
+    subject.components.guest_capabilities.each do |guest, caps|
+      caps.each do |cap|
+        subject.components.guest_capabilities[guest][cap]
+      end
+    end
+  end
+
+end