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print("The test 'framework' used here is still a touch wonky. A test failure need not mean that things are actually broken...")
require "httpest" --fyi, the test "framework" used here is still wonky.
math.randomseed(os.time())
local request=httpest.request
local sendurl, listenurl = "http://localhost:8082/broadcast/pub?channel=%s", "http://localhost:8082/broadcast/sub?channel=%s"
local function send(channel, message, callback)
assert(request{
url=sendurl:format(channel),
method="post",
data=message,
headers={['content-type']="text/foo"},
complete=function(r, status, sock)
assert(not status, "fail: " .. (status or "?"))
assert(r.status==201 or r.status==202, tostring(r))
if callback then
callback(r, status, sock)
end
end
})
end
local channeltags = {}
local function listen(channel, callback, timeout, headers)
if not channeltags[channel] then channeltags[channel] = {} end
local s
local subscriber_timeout = function()
return callback(nil, "timeout", s)
end
s = request{
url=listenurl:format(channel),
method="get",
headers = headers or {
['if-none-match']=channeltags[channel]['etag'],
['if-modified-since']=channeltags[channel]['last-modified']
},
complete = function(r, status, s)
httpest.killtimer(subscriber_timeout)
if not r then
channeltags[channel]=nil
return callback(nil, status, s)
end
channeltags[channel].etag=r:getheader("etag")
channeltags[channel]['last-modified']=r:getheader("last-modified")
if callback then
return callback(r, status, s)
else
return channel
end
end
}
httpest.timer(timeout or 500, subscriber_timeout)
return s
end
local function batchsend(channel, times, msg, callback, done)
send(channel, type(msg)=="function" and msg() or msg, function(...)
if callback then
callback(...)
end
if times>1 then
return batchsend(channel, times-1, msg, callback, done)
else
return done and done()
end
end)
end
local function batchlisten(channel, callback, timeout)
local function subscriber(r, err, s)
local result
if r or err then
result = callback(r, err, s)
end
if (not r and not err) or result then
return listen(channel, subscriber, timeout)
end
end
return subscriber()
end
local function shortmsg(base)
return (tostring(base)):rep(3)
end
local function testqueuing(channel, done)
local s, i, messages = nil, 0, {}
local function subscriber(resp, status, s)
if resp then
table.insert(messages, 1, resp:getbody())
end
if status=="timeout" then
httpest.abort_request(s)
print(" message buffer length is " .. #messages)
for j, v in ipairs(messages) do
assert(v==shortmsg(i-j+1), #v .. " " .. #shortmsg(i-j+1))
end
return nil
end
return true
end
batchsend(channel, 10,
function()
i=i+1
return shortmsg(i)
end,
nil,
function()
return batchlisten(channel, subscriber, 100)
end
)
end
--queuing
for i=1, 5 do
local channel = math.random()
httpest.addtest("queuing " .. i .. "(10 messages)", function() testqueuing(channel) end)
end
--deleting
local channel="deltest"
httpest.addtest("delete", function()
batchsend(channel, 20, "hey", nil, function()
request{
url=sendurl:format(channel),
method='delete',
complete=function(r,st,s)
assert(r.status==200, r.status)
request{
url=sendurl:format(channel),
method='delete',
complete=function(r,st,s)
assert(r.status==404)
end
}
end
}
end)
end)
--broadcasting
local num, reps, observed = 100, 5, 0
for i=0,reps do
local channel=math.random()
httpest.addtest(('broadcast to %s (%s)'):format(num, channel), function()
local msg = math.random() .. "yesyes"
for j=1, num do
batchlisten(channel, function(resp, status, sock)
if resp then
httpest.abort_request(sock)
assert(resp:getbody()==msg, "unexpected message: " .. resp:getbody() .. " (expected " .. msg)
observed = observed + 1
print(observed)
return nil
end
return true
end)
end
httpest.timer(2000, function()
send(channel, msg)
end)
end)
end
httpest.timer(5000*reps, function()
local total = reps*num
assert(responses==total, ("expected %d responses, got %d"):format(total, observed))
end)
httpest.run()
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