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require 'spec_helper'
SingleCov.covered! uncovered: 8
describe Docker do
subject { Docker }
it { should be_a Module }
context 'default url and connection' do
context "when the DOCKER_* ENV variables aren't set" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_HOST').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) { should == {} }
its(:url) { should == 'unix:///var/run/docker.sock' }
its(:connection) { should be_a Docker::Connection }
end
context "when the DOCKER_* ENV variables are set" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL')
.and_return('unixs:///var/run/not-docker.sock')
allow(ENV).to receive(:[]).with('DOCKER_HOST').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) { should == {} }
its(:url) { should == 'unixs:///var/run/not-docker.sock' }
its(:connection) { should be_a Docker::Connection }
end
context "when the DOCKER_HOST is set and uses default tcp://" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_HOST').and_return('tcp://')
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) { should == {} }
its(:url) { should == 'tcp://localhost:2375' }
its(:connection) { should be_a Docker::Connection }
end
context "when the DOCKER_HOST ENV variable is set" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_HOST')
.and_return('tcp://someserver:8103')
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) { should == {} }
its(:url) { should == 'tcp://someserver:8103' }
its(:connection) { should be_a Docker::Connection }
end
context "DOCKER_URL should take precedence over DOCKER_HOST" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL')
.and_return('tcp://someotherserver:8103')
allow(ENV).to receive(:[]).with('DOCKER_HOST')
.and_return('tcp://someserver:8103')
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) { should == {} }
its(:url) { should == 'tcp://someotherserver:8103' }
its(:connection) { should be_a Docker::Connection }
end
context "when the DOCKER_CERT_PATH and DOCKER_HOST ENV variables are set" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_HOST')
.and_return('tcp://someserver:8103')
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH')
.and_return('/boot2dockert/cert/path')
allow(ENV).to receive(:[]).with('DOCKER_SSL_VERIFY').and_return(nil)
Docker.reset!
end
after { Docker.reset! }
its(:options) {
should == {
client_cert: '/boot2dockert/cert/path/cert.pem',
client_key: '/boot2dockert/cert/path/key.pem',
ssl_ca_file: '/boot2dockert/cert/path/ca.pem',
scheme: 'https'
}
}
its(:url) { should == 'tcp://someserver:8103' }
its(:connection) { should be_a Docker::Connection }
end
context "when the DOCKER_CERT_PATH and DOCKER_SSL_VERIFY ENV variables are set" do
before do
allow(ENV).to receive(:[]).with('DOCKER_URL').and_return(nil)
allow(ENV).to receive(:[]).with('DOCKER_HOST')
.and_return('tcp://someserver:8103')
allow(ENV).to receive(:[]).with('DOCKER_CERT_PATH')
.and_return('/boot2dockert/cert/path')
allow(ENV).to receive(:[]).with('DOCKER_SSL_VERIFY')
.and_return('false')
Docker.reset!
end
after { Docker.reset! }
its(:options) {
should == {
client_cert: '/boot2dockert/cert/path/cert.pem',
client_key: '/boot2dockert/cert/path/key.pem',
ssl_ca_file: '/boot2dockert/cert/path/ca.pem',
scheme: 'https',
ssl_verify_peer: false
}
}
its(:url) { should == 'tcp://someserver:8103' }
its(:connection) { should be_a Docker::Connection }
end
end
describe '#reset_connection!' do
before { subject.connection }
it 'sets the @connection to nil' do
expect { subject.reset_connection! }
.to change { subject.instance_variable_get(:@connection) }
.to nil
end
end
[:options=, :url=].each do |method|
describe "##{method}" do
before { Docker.reset! }
it 'calls #reset_connection!' do
expect(subject).to receive(:reset_connection!)
subject.public_send(method, nil)
end
end
end
describe '#version' do
before { Docker.reset! }
let(:expected) {
%w[ApiVersion Arch GitCommit GoVersion KernelVersion Os Version]
}
let(:version) { subject.version }
it 'returns the version as a Hash' do
expect(version).to be_a Hash
expect(version.keys.sort).to include(*expected)
end
end
describe '#info' do
before { Docker.reset! }
let(:info) { subject.info }
let(:keys) do
%w(Containers Debug DockerRootDir Driver DriverStatus ID IPv4Forwarding
Images IndexServerAddress KernelVersion Labels MemTotal MemoryLimit
NCPU NEventsListener NFd NGoroutines Name OperatingSystem SwapLimit)
end
it 'returns the info as a Hash' do
expect(info).to be_a Hash
expect(info.keys.sort).to include(*keys)
end
end
describe '#ping' do
before { Docker.reset! }
let(:ping) { subject.ping}
it 'returns the status as a String' do
expect(ping).to eq('OK')
end
end
describe '#authenticate!' do
subject { described_class }
let(:authentication) {
subject.authenticate!(credentials)
}
after { Docker.creds = nil }
context 'with valid credentials' do
let(:credentials) {
{
:username => ENV['DOCKER_API_USER'],
:password => ENV['DOCKER_API_PASS'],
:email => ENV['DOCKER_API_EMAIL'],
:serveraddress => 'https://index.docker.io/v1/'
}
}
it 'logs in and sets the creds' do
skip_without_auth
expect(authentication).to be true
expect(Docker.creds).to eq(MultiJson.dump(credentials))
end
end
context 'with invalid credentials' do
let(:credentials) {
{
:username => 'test',
:password => 'password',
:email => 'test@example.com',
:serveraddress => 'https://index.docker.io/v1/'
}
}
it "raises an error and doesn't set the creds" do
skip('Not supported on podman') if ::Docker.podman?
expect {
authentication
}.to raise_error(Docker::Error::AuthenticationError)
expect(Docker.creds).to be_nil
end
end
end
end
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