vagrant-lxc-ng/spec/unit/driver/cli_spec.rb

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require 'unit_helper'
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require 'vagrant-lxc/driver/cli'
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describe Vagrant::LXC::Driver::CLI do
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describe 'list' do
let(:lxc_ls_out) { "dup-container\na-container dup-container" }
let(:result) { @result }
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before do
subject.stub(:run).with(:ls).and_return(lxc_ls_out)
@result = subject.list
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end
it 'grabs previously created containers from lxc-ls output' do
result.should be_an Enumerable
result.should include 'a-container'
result.should include 'dup-container'
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end
it 'removes duplicates from lxc-ls output' do
result.uniq.should == result
end
end
describe 'version' do
let(:lxc_version_out) { "lxc version: 0.x.y-rc1\n" }
before do
subject.stub(:run).with(:version).and_return(lxc_version_out)
end
it 'parses the version from the output' do
subject.version.should == '0.x.y-rc1'
end
end
describe 'create' do
let(:template) { 'quantal-64' }
let(:name) { 'quantal-container' }
let(:template_args) { { '--extra-param' => 'param', '--other' => 'value' } }
subject { described_class.new(name) }
before do
subject.stub(:run) { |*args| @run_args = args }
subject.create(template, template_args)
end
it 'issues a lxc-create with provided template, container name and hash of arguments' do
subject.should have_received(:run).with(
:create,
'--template', template,
'--name', name,
'--',
'--extra-param', 'param',
'--other', 'value'
)
end
end
describe 'destroy' do
let(:name) { 'a-container-for-destruction' }
subject { described_class.new(name) }
before do
subject.stub(:run)
subject.destroy
end
it 'issues a lxc-destroy with container name' do
subject.should have_received(:run).with(:destroy, '--name', name)
end
end
describe 'start' do
let(:name) { 'a-container' }
subject { described_class.new(name) }
before do
subject.stub(:run)
end
it 'starts container on the background' do
subject.start
subject.should have_received(:run).with(
:start,
'-d',
'--name', name
)
end
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it 'uses provided array to override container configs' do
subject.start([['config', 'value'], ['other', 'value']])
subject.should have_received(:run).with(:start, '-d', '--name', name,
'-s', 'lxc.config=value',
'-s', 'lxc.other=value'
)
end
end
describe 'shutdown' do
let(:name) { 'a-running-container' }
subject { described_class.new(name) }
before do
subject.stub(:run)
subject.shutdown
end
it 'issues a lxc-shutdown with provided container name' do
subject.should have_received(:run).with(:shutdown, '--name', name)
end
end
describe 'state' do
let(:name) { 'a-container' }
subject { described_class.new(name) }
before do
subject.stub(:run).and_return("state: STOPPED\npid: 2")
end
it 'calls lxc-info with the right arguments' do
subject.state
subject.should have_received(:run).with(:info, '--name', name)
end
it 'maps the output of lxc-info status out to a symbol' do
subject.state.should == :stopped
end
end
describe 'attach' do
let(:name) { 'a-running-container' }
let(:command) { ['ls', 'cat /tmp/file'] }
let(:command_output) { 'folders list' }
subject { described_class.new(name) }
before do
subject.stub(run: command_output)
end
it 'calls lxc-attach with specified command' do
subject.attach(*command)
subject.should have_received(:run).with(:attach, '--name', name, '--', *command)
end
it 'supports a "namespaces" parameter' do
subject.attach *(command + [{namespaces: ['network', 'mount']}])
subject.should have_received(:run).with(:attach, '--name', name, '--namespaces', 'NETWORK|MOUNT', '--', *command)
end
end
describe 'transition block' do
let(:name) { 'a-running-container' }
subject { described_class.new(name) }
before { subject.stub(:run) }
it 'yields cli object' do
subject.stub(:shutdown)
subject.transition_to(:stopped) { |c| c.shutdown }
subject.should have_received(:shutdown)
end
it 'throws an exception if block is not provided' do
expect {
subject.transition_to(:running)
}.to raise_error(described_class::TransitionBlockNotProvided)
end
it 'waits for the expected container state using lxc-wait' do
subject.transition_to(:running) { }
subject.should have_received(:run).with(:wait, '--name', name, '--state', 'RUNNING')
end
end
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end