debian-mirror-gitlab/spec/lib/gitlab/kubernetes/namespace_spec.rb

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require 'spec_helper'
describe Gitlab::Kubernetes::Namespace do
let(:name) { 'a_namespace' }
let(:client) { double('kubernetes client') }
subject { described_class.new(name, client) }
it { expect(subject.name).to eq(name) }
describe '#exists?' do
context 'when namespace do not exits' do
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let(:exception) { ::Kubeclient::ResourceNotFoundError.new(404, "namespace #{name} not found", nil) }
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it 'returns false' do
expect(client).to receive(:get_namespace).with(name).once.and_raise(exception)
expect(subject.exists?).to be_falsey
end
end
context 'when namespace exits' do
let(:namespace) { ::Kubeclient::Resource.new(kind: 'Namespace', metadata: { name: name }) } # partial representation
it 'returns true' do
expect(client).to receive(:get_namespace).with(name).once.and_return(namespace)
expect(subject.exists?).to be_truthy
end
end
context 'when cluster cannot be reached' do
let(:exception) { Errno::ECONNREFUSED.new }
it 'raises exception' do
expect(client).to receive(:get_namespace).with(name).once.and_raise(exception)
expect { subject.exists? }.to raise_error(exception)
end
end
end
describe '#create!' do
it 'creates a namespace' do
matcher = have_attributes(metadata: have_attributes(name: name))
expect(client).to receive(:create_namespace).with(matcher).once
expect { subject.create! }.not_to raise_error
end
end
describe '#ensure_exists!' do
it 'checks for existing namespace before creating' do
expect(subject).to receive(:exists?).once.ordered.and_return(false)
expect(subject).to receive(:create!).once.ordered
subject.ensure_exists!
end
it 'do not re-create an existing namespace' do
expect(subject).to receive(:exists?).once.and_return(true)
expect(subject).not_to receive(:create!)
subject.ensure_exists!
end
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context 'when client errors' do
let(:exception) { Kubeclient::HttpError.new(500, 'system failure', nil) }
before do
allow(client).to receive(:get_namespace).with(name).once.and_raise(exception)
end
it 'raises the exception' do
expect { subject.ensure_exists! }.to raise_error(exception)
end
it 'logs the error' do
expect(subject.send(:logger)).to receive(:error).with(
hash_including(
exception: 'Kubeclient::HttpError',
status_code: 500,
namespace: 'a_namespace',
class_name: 'Gitlab::Kubernetes::Namespace',
event: :failed_to_create_namespace,
message: 'system failure'
)
)
expect { subject.ensure_exists! }.to raise_error(exception)
end
end
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end
end