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|
require 'spec_helper'
SingleCov.covered! uncovered: 5
describe Docker::Exec do
let(:container) {
Docker::Container.create(
'Cmd' => %w(sleep 300),
'Image' => 'debian:stable'
).start!
}
describe '#to_s' do
subject {
described_class.send(:new, Docker.connection, 'id' => rand(10000).to_s)
}
let(:id) { 'bf119e2' }
let(:connection) { Docker.connection }
let(:expected_string) {
"Docker::Exec { :id => #{id}, :connection => #{connection} }"
}
before do
{
:@id => id,
:@connection => connection
}.each { |k, v| subject.instance_variable_set(k, v) }
end
its(:to_s) { should == expected_string }
end
describe '.create' do
subject { described_class }
context 'when the HTTP request returns a 201' do
let(:options) do
{
'AttachStdin' => false,
'AttachStdout' => false,
'AttachStderr' => false,
'Tty' => false,
'Cmd' => [
'date'
],
'Container' => container.id
}
end
let(:process) { subject.create(options) }
after { container.kill!.remove }
it 'sets the id' do
expect(process).to be_a Docker::Exec
expect(process.id).to_not be_nil
expect(process.connection).to_not be_nil
end
end
context 'when the parent container does not exist' do
before do
Docker.options = { :mock => true }
Excon.stub({ :method => :get}, { :status => 404 }) # For Podman
Excon.stub({ :method => :post}, { :status => 404 })
end
after do
Excon.stubs.shift
Docker.options = {}
end
it 'raises an error' do
expect { subject.create }.to raise_error(Docker::Error::NotFoundError)
end
end
end
describe '#json' do
subject {
described_class.create(
'Container' => container.id,
'Detach' => true,
'Cmd' => %w[true]
)
}
let(:description) { subject.json }
before { subject.start! }
after { container.kill!.remove }
it 'returns the description as a Hash' do
expect(description).to be_a Hash
expect(description['ID']).to start_with(subject.id)
end
end
describe '#start!' do
context 'when the exec instance does not exist' do
subject do
described_class.send(:new, Docker.connection, 'id' => rand(10000).to_s)
end
it 'raises an error' do
expect { subject.start! }.to raise_error(Docker::Error::NotFoundError)
end
end
context 'when :detach is set to false' do
subject {
described_class.create(
'Container' => container.id,
'AttachStdout' => true,
'Cmd' => ['bash','-c','sleep 2; echo hello']
)
}
after { container.kill!.remove }
it 'returns the stdout and stderr messages' do
expect(subject.start!).to eq([["hello\n"],[],0])
end
context 'block is passed' do
it 'attaches to the stream' do
chunk = nil
result = subject.start! do |stream, c|
chunk ||= c
end
expect(chunk).to eq("hello\n")
expect(result).to eq([["hello\n"], [], 0])
end
end
end
context 'when :detach is set to true' do
subject {
described_class.create('Container' => container.id, 'Cmd' => %w[date])
}
after { container.kill!.remove }
it 'returns empty stdout/stderr messages with exitcode' do
expect(subject.start!(:detach => true).length).to eq(3)
end
end
context 'when :wait set long time value' do
subject {
described_class.create(
'Container' => container.id,
'AttachStdout' => true,
'Cmd' => %w[true]
)
}
after { container.kill!.remove }
it 'returns empty stdout and stderr messages with exitcode' do
expect(subject.start!(:wait => 100)).to eq([[], [], 0])
end
end
context 'when :wait set short time value' do
subject {
described_class.create(
'Container' => container.id,
'AttachStdout' => true,
'Cmd' => ['bash', '-c', 'sleep 2; echo hello']
)
}
after { container.kill!.remove }
it 'raises an error' do
expect { subject.start!(:wait => 1) }.to raise_error(Docker::Error::TimeoutError)
end
end
context 'when the HTTP request returns a 201' do
subject {
described_class.create('Container' => container.id, 'Cmd' => ['date'])
}
after { container.kill!.remove }
it 'starts the exec instance' do
expect { subject.start! }.not_to raise_error
end
end
end
end
|
