/
middleware_spec.rb
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/
middleware_spec.rb
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# frozen_string_literal: true
require 'rack/test'
require 'zlib'
describe Rack::MiniProfiler do
include Rack::Test::Methods
before(:each) { Rack::MiniProfiler.reset_config }
def do_get(params = {})
get '/html', params, 'HTTP_ACCEPT_ENCODING' => 'gzip, compress'
end
def decompressed_response
Zlib::GzipReader.new(StringIO.new(last_response.body)).read
end
describe '/rack-mini-profiler/requests page' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
it 'is an empty page' do
get '/rack-mini-profiler/requests', {}, 'HTTP_ACCEPT_ENCODING' => 'gzip, compress'
expect(last_response.body).to include('<title>Rack::MiniProfiler Requests</title>')
expect(last_response.body).to match('<body>\n </body>')
end
end
describe '?pp=help page' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
it 'shows commands' do
do_get(pp: 'help')
expect(last_response.body).to include('<title>Rack::MiniProfiler Help</title>')
expect(last_response.body).to include("help")
expect(last_response.body).to include("env")
expect(last_response.body).to include("skip")
expect(last_response.body).to include("no-backtrace")
expect(last_response.body).to include("normal-backtrace")
expect(last_response.body).to include("full-backtrace")
expect(last_response.body).to include("disable")
expect(last_response.body).to include("enable")
expect(last_response.body).to include("profile-gc")
expect(last_response.body).to include("profile-memory")
expect(last_response.body).to include("flamegraph")
expect(last_response.body).to include("async-flamegraph")
expect(last_response.body).to include("flamegraph&flamegraph_sample_rate=1")
expect(last_response.body).to include("flamegraph&flamegraph_mode=cpu")
expect(last_response.body).to include("flamegraph&flamegraph_ignore_gc=true")
expect(last_response.body).to include("flamegraph_embed")
expect(last_response.body).to include("trace-exceptions")
expect(last_response.body).to include("analyze-memory")
end
end
shared_examples 'should not affect a skipped requests' do
it 'should not affect a skipped requests' do
do_get(pp: 'skip')
expect(last_response.headers).to include('Content-Encoding')
expect(last_response.headers['Content-Encoding']).to eq('gzip')
end
end
describe 'when enable_advanced_debugging_tools is false' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
it 'advanced tools are disabled' do
%w{env analyze-memory profile-gc profile-memory}.each do |p|
do_get(pp: p)
expect(last_response.body).to eq(Rack::MiniProfiler.advanced_tools_message)
end
end
end
describe 'when enable_advanced_debugging_tools is true' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
run(
lambda do |_env|
[
201,
{ 'Content-Type' => 'text/html', 'X-CUSTOM' => "1" },
[+'<html><body><h1>Hi</h1></body></html>'],
]
end
)
end
end
before(:each) { Rack::MiniProfiler.config.enable_advanced_debugging_tools = true }
describe 'with analyze-memory query' do
it 'should return ObjectSpace statistics' do
do_get(pp: 'analyze-memory')
expect(last_response.body).to include('Largest strings:')
end
end
describe 'with profile-memory query' do
it 'should return memory_profiler error message' do
do_get(pp: 'profile-memory')
expect(last_response.body).to eq(
'Please install the memory_profiler gem and require it: add gem \'memory_profiler\' to your Gemfile'
)
expect(last_response.headers['Content-Type']).to eq('text/plain; charset=utf-8')
expect(last_response.headers['X-CUSTOM']).to eq('1')
expect(last_response.status).to eq(500)
end
end
describe 'with flamegraph query' do
it 'should return stackprof error message' do
do_get(pp: 'flamegraph')
expect(last_response.body).to eq(
'Please install the stackprof gem and require it: add gem \'stackprof\' to your Gemfile'
)
expect(last_response.headers['Content-Type']).to eq('text/plain; charset=utf-8')
expect(last_response.headers['X-CUSTOM']).to eq('1')
expect(last_response.status).to eq(201)
end
end
describe 'with async-flamegraph query' do
it 'should return stackprof error message' do
do_get(pp: 'async-flamegraph')
expect(last_response.body).to eq(
'Please install the stackprof gem and require it: add gem \'stackprof\' to your Gemfile'
)
expect(last_response.headers['Content-Type']).to eq('text/plain; charset=utf-8')
expect(last_response.headers['X-CUSTOM']).to eq('1')
expect(last_response.status).to eq(201)
end
end
end
describe 'with Rack::MiniProfiler before Rack::Deflater' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
use Rack::Deflater
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
describe 'with suppress_encoding true' do
before { Rack::MiniProfiler.config.suppress_encoding = true }
it 'should inject script and *not* compress' do
do_get
expect(last_response.body).to include('/mini-profiler-resources/includes.js')
expect(last_response.headers).not_to include('Content-Encoding')
end
include_examples 'should not affect a skipped requests'
end
describe 'with suppress_encoding false' do
before { Rack::MiniProfiler.config.suppress_encoding = false }
it 'should *not* inject script but should compress' do
do_get
expect(decompressed_response).not_to include('/mini-profiler-resources/includes.js')
expect(last_response.headers['Content-Encoding']).to eq('gzip')
end
include_examples 'should not affect a skipped requests'
end
end
describe 'with Rack::Deflater before Rack::MiniProfiler' do
def app
Rack::Builder.new do
use Rack::Deflater
use Rack::MiniProfiler
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
describe 'with suppress_encoding true' do
before { Rack::MiniProfiler.config.suppress_encoding = true }
it 'should inject script and compress' do
do_get
expect(decompressed_response).to include('/mini-profiler-resources/includes.js')
expect(last_response.headers['Content-Encoding']).to eq('gzip')
end
include_examples 'should not affect a skipped requests'
end
describe 'with suppress_encoding false' do
before { Rack::MiniProfiler.config.suppress_encoding = false }
it 'should inject script and compress' do
do_get
expect(decompressed_response).to include('/mini-profiler-resources/includes.js')
expect(last_response.headers['Content-Encoding']).to eq('gzip')
end
include_examples 'should not affect a skipped requests'
end
end
context 'when using a different profile parameter' do
def app
Rack::Builder.new do
use Rack::MiniProfiler
run lambda { |_env| [200, { 'Content-Type' => 'text/html' }, [+'<html><body><h1>Hi</h1></body></html>']] }
end
end
def with_profile_parameter(param)
old_param = Rack::MiniProfiler.config.profile_parameter
Rack::MiniProfiler.config.profile_parameter = param
yield
ensure
Rack::MiniProfiler.config.profile_parameter = old_param
end
it 'show help page' do
with_profile_parameter('profile') do
do_get(profile: 'help')
expect(last_response.body).to include('This is the help menu')
end
end
end
end