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require 'spec_helper'
describe Gitlab::Profiler do
RSpec::Matchers.define_negated_matcher :not_change, :change
let(:null_logger) { Logger.new('/dev/null') }
let(:private_token) { 'private' }
describe '.profile' do
let(:app) { double(:app) }
before do
allow(ActionDispatch::Integration::Session).to receive(:new).and_return(app)
allow(app).to receive(:get)
end
it 'returns a profile result' do
expect(described_class.profile('/')).to be_an_instance_of(RubyProf::Profile)
end
it 'uses the custom logger given' do
expect(described_class).to receive(:create_custom_logger)
.with(null_logger, private_token: anything)
.and_call_original
described_class.profile('/', logger: null_logger)
end
it 'sends a POST request when data is passed' do
post_data = '{"a":1}'
expect(app).to receive(:post).with(anything, post_data, anything)
described_class.profile('/', post_data: post_data)
end
it 'uses the private_token for auth if given' do
expect(app).to receive(:get).with('/', nil, 'Private-Token' => private_token)
expect(app).to receive(:get).with('/api/v4/users')
described_class.profile('/', private_token: private_token)
end
it 'uses the user for auth if given' do
user = double(:user)
user_token = 'user'
allow(user).to receive_message_chain(:personal_access_tokens, :active, :pluck, :first).and_return(user_token)
expect(app).to receive(:get).with('/', nil, 'Private-Token' => user_token)
expect(app).to receive(:get).with('/api/v4/users')
described_class.profile('/', user: user)
end
context 'when providing a user without a personal access token' do
it 'raises an error' do
user = double(:user)
allow(user).to receive_message_chain(:personal_access_tokens, :active, :pluck).and_return([])
expect { described_class.profile('/', user: user) }.to raise_error('Your user must have a personal_access_token')
end
end
it 'uses the private_token for auth if both it and user are set' do
user = double(:user)
user_token = 'user'
allow(user).to receive_message_chain(:personal_access_tokens, :active, :pluck, :first).and_return(user_token)
expect(app).to receive(:get).with('/', nil, 'Private-Token' => private_token)
expect(app).to receive(:get).with('/api/v4/users')
described_class.profile('/', user: user, private_token: private_token)
end
end
describe '.create_custom_logger' do
it 'does nothing when nil is passed' do
expect(described_class.create_custom_logger(nil)).to be_nil
end
context 'the new logger' do
let(:custom_logger) do
described_class.create_custom_logger(null_logger, private_token: private_token)
end
it 'does not affect the existing logger' do
expect(null_logger).not_to receive(:debug)
expect(custom_logger).to receive(:debug).and_call_original
custom_logger.debug('Foo')
end
it 'strips out the private token' do
expect(custom_logger).to receive(:add) do |severity, _progname, message|
next if message.include?('spec/')
expect(severity).to eq(Logger::DEBUG)
expect(message).to include('public').and include(described_class::FILTERED_STRING)
expect(message).not_to include(private_token)
end.twice
custom_logger.debug("public #{private_token}")
end
it 'tracks model load times by model' do
custom_logger.debug('This is not a model load')
custom_logger.debug('User Load (1.2ms)')
custom_logger.debug('User Load (1.3ms)')
custom_logger.debug('Project Load (10.4ms)')
expect(custom_logger.load_times_by_model).to eq('User' => 2.5,
'Project' => 10.4)
end
it 'logs the backtrace, ignoring lines as appropriate' do
# Skip Rails's backtrace cleaning.
allow(Rails.backtrace_cleaner).to receive(:clean, &:itself)
expect(custom_logger).to receive(:add)
.with(Logger::DEBUG,
anything,
a_string_matching(File.basename(__FILE__)))
.twice
expect(custom_logger).not_to receive(:add).with(Logger::DEBUG,
anything,
a_string_matching('lib/gitlab/profiler.rb'))
# Force a part of the backtrace to be in the (ignored) profiler source
# file.
described_class.with_custom_logger(nil) { custom_logger.debug('Foo') }
end
end
end
describe '.with_custom_logger' do
context 'when the logger is set' do
it 'uses the replacement logger for the duration of the block' do
expect(null_logger).to receive(:debug).and_call_original
expect { described_class.with_custom_logger(null_logger) { ActiveRecord::Base.logger.debug('foo') } }
.to not_change { ActiveRecord::Base.logger }
.and not_change { ActionController::Base.logger }
.and not_change { ActiveSupport::LogSubscriber.colorize_logging }
end
it 'returns the result of the block' do
expect(described_class.with_custom_logger(null_logger) { 2 }).to eq(2)
end
end
context 'when the logger is nil' do
it 'returns the result of the block' do
expect(described_class.with_custom_logger(nil) { 2 }).to eq(2)
end
it 'does not modify the standard Rails loggers' do
expect { described_class.with_custom_logger(nil) { } }
.to not_change { ActiveRecord::Base.logger }
.and not_change { ActionController::Base.logger }
.and not_change { ActiveSupport::LogSubscriber.colorize_logging }
end
end
end
end
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