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|
# frozen_string_literal: true
require 'fast_spec_helper'
require_dependency 'gitlab/cluster/lifecycle_events'
RSpec.describe Gitlab::Memory::Watchdog::Configuration do
subject(:configuration) { described_class.new }
describe '#initialize' do
it 'initialize monitors' do
expect(configuration.monitors).to be_an_instance_of(described_class::MonitorStack)
end
end
describe '#handler' do
context 'when handler is not set' do
it 'defaults to NullHandler' do
expect(configuration.handler).to be(Gitlab::Memory::Watchdog::NullHandler.instance)
end
end
end
describe '#logger' do
context 'when logger is not set, defaults to stdout logger' do
it 'defaults to Logger' do
expect(configuration.logger).to be_an_instance_of(::Gitlab::Logger)
end
end
end
describe '#sleep_time_seconds' do
context 'when sleep_time_seconds is not set' do
it 'defaults to SLEEP_TIME_SECONDS' do
expect(configuration.sleep_time_seconds).to eq(described_class::DEFAULT_SLEEP_TIME_SECONDS)
end
end
end
describe '#monitors' do
context 'when monitors are configured to be used' do
let(:payload1) do
{
message: 'monitor_1_text',
memwd_max_strikes: 5,
memwd_cur_strikes: 0
}
end
let(:payload2) do
{
message: 'monitor_2_text',
memwd_max_strikes: 0,
memwd_cur_strikes: 1
}
end
let(:monitor_class_1) do
Struct.new(:threshold_violated, :payload) do
def call
{ threshold_violated: !!threshold_violated, payload: payload || {} }
end
def self.name
'Monitor1'
end
end
end
let(:monitor_class_2) do
Struct.new(:threshold_violated, :payload) do
def call
{ threshold_violated: !!threshold_violated, payload: payload || {} }
end
def self.name
'Monitor2'
end
end
end
context 'when two different monitor class are configured' do
shared_examples 'executes monitors and returns correct results' do
it 'calls each monitor and returns correct results', :aggregate_failures do
payloads = []
thresholds = []
strikes = []
monitor_names = []
configuration.monitors.call_each do |result|
payloads << result.payload
thresholds << result.threshold_violated?
strikes << result.strikes_exceeded?
monitor_names << result.monitor_name
end
expect(payloads).to eq([payload1, payload2])
expect(thresholds).to eq([false, true])
expect(strikes).to eq([false, true])
expect(monitor_names).to eq([:monitor1, :monitor2])
end
end
context 'when monitors are configured inline' do
before do
configuration.monitors.push monitor_class_1, false, { message: 'monitor_1_text' }, max_strikes: 5
configuration.monitors.push monitor_class_2, true, { message: 'monitor_2_text' }, max_strikes: 0
end
include_examples 'executes monitors and returns correct results'
end
context 'when monitors are configured in a block' do
before do
configuration.monitors do |stack|
stack.push monitor_class_1, false, { message: 'monitor_1_text' }, max_strikes: 5
stack.push monitor_class_2, true, { message: 'monitor_2_text' }, max_strikes: 0
end
end
include_examples 'executes monitors and returns correct results'
end
end
context 'when same monitor class is configured twice' do
before do
configuration.monitors.push monitor_class_1, max_strikes: 1
configuration.monitors.push monitor_class_1, max_strikes: 1
end
it 'calls same monitor only once' do
expect do |b|
configuration.monitors.call_each(&b)
end.to yield_control.once
end
end
end
end
end
|
