vagrant-lxc-ng/spec/unit/driver_spec.rb

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require 'unit_helper'
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require 'vagrant-lxc/driver'
require 'vagrant-lxc/driver/cli'
require 'vagrant-lxc/sudo_wrapper'
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describe Vagrant::LXC::Driver do
describe 'container name validation' do
let(:unknown_container) { described_class.new('unknown', nil, cli) }
let(:valid_container) { described_class.new('valid', nil, cli) }
let(:new_container) { described_class.new(nil, nil) }
let(:cli) { double(Vagrant::LXC::Driver::CLI, list: ['valid']) }
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it 'raises a ContainerNotFound error if an unknown container name gets provided' do
expect {
unknown_container.validate!
}.to raise_error
end
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it 'does not raise a ContainerNotFound error if a valid container name gets provided' do
expect {
valid_container.validate!
}.not_to raise_error
end
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it 'does not raise a ContainerNotFound error if nil is provider as name' do
expect {
new_container.validate!
}.not_to raise_error
end
end
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describe 'creation' do
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let(:name) { 'container-name' }
let(:backingstore) { 'btrfs' }
let(:backingstore_opts) { [['--dir', '/tmp/foo'], ['--foo', 'bar']] }
let(:template_name) { 'auto-assigned-template-id' }
let(:template_path) { '/path/to/lxc-template-from-box' }
let(:template_opts) { {'--some' => 'random-option'} }
let(:config_file) { '/path/to/lxc-config-from-box' }
let(:rootfs_tarball) { '/path/to/cache/rootfs.tar.gz' }
let(:cli) { double(Vagrant::LXC::Driver::CLI, :create => true, :name= => true) }
subject { described_class.new(nil, nil, cli) }
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before do
allow(subject).to receive(:import_template).and_yield(template_name)
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subject.create name, backingstore, backingstore_opts, template_path, config_file, template_opts
end
it 'sets the cli object container name' do
expect(cli).to have_received(:name=).with(name)
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end
it 'creates container with the right arguments' do
expect(cli).to have_received(:create).with(
template_name,
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backingstore,
backingstore_opts,
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config_file,
template_opts
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)
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end
end
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describe 'destruction' do
let(:cli) { double(Vagrant::LXC::Driver::CLI, destroy: true) }
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subject { described_class.new('name', nil, cli) }
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before { subject.destroy }
it 'delegates to cli object' do
expect(cli).to have_received(:destroy)
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end
end
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describe 'supports_attach?' do
let(:cli) { double(Vagrant::LXC::Driver::CLI, supports_attach?: true) }
subject { described_class.new('name', nil, cli) }
it 'delegates to cli object' do
expect(subject.supports_attach?).to be_truthy
expect(cli).to have_received(:supports_attach?)
end
end
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describe 'start' do
let(:customizations) { [['a', '1'], ['b', '2']] }
let(:internal_customization) { ['internal', 'customization'] }
let(:cli) { double(Vagrant::LXC::Driver::CLI, start: true) }
let(:sudo) { double(Vagrant::LXC::SudoWrapper) }
subject { described_class.new('name', sudo, cli) }
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before do
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sudo.should_receive(:run).with('cat', '/var/lib/lxc/name/config').exactly(2).times.
and_return('# CONFIGURATION')
sudo.should_receive(:run).twice.with('cp', '-f', %r{/tmp/.*}, '/var/lib/lxc/name/config')
sudo.should_receive(:run).twice.with('chown', 'root:root', '/var/lib/lxc/name/config')
subject.customizations << internal_customization
subject.start(customizations)
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end
it 'prunes previous customizations before writing'
it 'writes configurations to config file'
it 'starts container with configured customizations' do
expect(cli).to have_received(:start)
end
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end
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describe 'halt' do
let(:cli) { double(Vagrant::LXC::Driver::CLI, shutdown: true) }
subject { described_class.new('name', nil, cli) }
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before do
allow(cli).to receive(:transition_to).and_yield(cli)
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end
it 'delegates to cli shutdown' do
expect(cli).to receive(:shutdown)
subject.forced_halt
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end
it 'expects a transition to running state to take place' do
expect(cli).to receive(:transition_to).with(:stopped)
subject.forced_halt
end
it 'attempts to force the container to stop in case a shutdown doesnt work' do
allow(cli).to receive(:shutdown).and_raise(Vagrant::LXC::Driver::CLI::TargetStateNotReached.new :target, :source)
expect(cli).to receive(:transition_to).with(:stopped).twice
expect(cli).to receive(:stop)
subject.forced_halt
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end
it 'attempts to force the container to stop in case lxc-shutdown is not supported' do
allow(cli).to receive(:shutdown).and_raise(Vagrant::LXC::Driver::CLI::ShutdownNotSupported)
expect(cli).to receive(:transition_to).with(:stopped).twice
expect(cli).to receive(:stop)
subject.forced_halt
end
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end
describe 'state' do
let(:cli_state) { :something }
let(:cli) { double(Vagrant::LXC::Driver::CLI, state: cli_state) }
subject { described_class.new('name', nil, cli) }
it 'delegates to cli' do
expect(subject.state).to eq(cli_state)
end
end
describe 'folder sharing' do
let(:shared_folder) { {guestpath: '/vagrant', hostpath: '/path/to/host/dir'} }
let(:ro_rw_folder) { {guestpath: '/vagrant/ro_rw', hostpath: '/path/to/host/dir', mount_options: ['ro', 'rw']} }
let(:folders) { [shared_folder, ro_rw_folder] }
let(:rootfs_path) { Pathname('/path/to/rootfs') }
let(:expected_guest_path) { "vagrant" }
let(:sudo_wrapper) { double(Vagrant::LXC::SudoWrapper, run: true) }
subject { described_class.new('name', sudo_wrapper) }
before do
subject.stub(rootfs_path: rootfs_path, system: true)
subject.share_folders(folders)
end
it "creates guest folder under container's rootfs" do
expect(sudo_wrapper).to have_received(:run).with("mkdir", "-p", "#{rootfs_path}/#{expected_guest_path}")
end
it 'adds a mount.entry to its local customizations' do
expect(subject.customizations).to include [
'mount.entry',
"#{shared_folder[:hostpath]} #{expected_guest_path} none bind 0 0"
]
end
it 'supports additional mount options' do
expect(subject.customizations).to include [
'mount.entry',
"#{ro_rw_folder[:hostpath]} vagrant/ro_rw none ro,rw 0 0"
]
end
end
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end