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Versions: 13
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Stored size: 1.95 KB
Contents
describe Appsignal::System::Container do
describe ".id" do
subject { described_class.id }
context "when in docker" do
context "when running normally" do
around { |example| recognize_as_container(:docker) { example.run } }
it "returns id" do
expect(subject).to eq("0c703b75cdeaad7c933aa68b4678cc5c37a12d5ef5d7cb52c9cefe684d98e575")
end
end
context "when running with systemd" do
around do |example|
# Fabricated example. I'm unable to set up an environment that
# produces such a cgroups file.
recognize_as_container(:docker_systemd) { example.run }
end
it "returns id" do
expect(subject).to eq("09f1c4d420025670a3633edbc9b31450f1d6b2ff87b5912a10c320ad398c7215")
end
end
end
context "when in LXC" do
around { |example| recognize_as_container(:lxc) { example.run } }
it "returns id" do
expect(subject).to eq("1a2e485e-3947-4bb6-8c24-8774f0859648")
end
end
context "when not in container" do
around { |example| recognize_as_container(:none) { example.run } }
it "returns nil" do
expect(subject).to be_nil
end
end
context "when no permission to read cgroup file" do
let(:out_stream) { StringIO.new }
let(:no_permission_file) do
File.join(fixtures_dir, 'containers', 'cgroups', 'no_permission')
end
before do
File.chmod 0333, no_permission_file
Appsignal.logger = Logger.new(out_stream)
end
around { |example| recognize_as_container(:no_permission) { example.run } }
after { File.chmod 0644, no_permission_file }
it "returns nil" do
expect(subject).to be_nil
end
it "logs the error" do
subject
expect(out_stream.string).to include \
"Unable to read '#{no_permission_file}' to determine cgroup",
"Permission denied"
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems