[Tarantool-patches] [PATCH] test: fix flaky socket test
Ilya Kosarev
i.kosarev at tarantool.org
Wed Dec 4 16:43:20 MSK 2019
socket.test had a number of flaky problems:
- socket readableness expectation
- race conditions on socket shutdown in emulation test cases
- tcp_server stability in socket receive inconsistent behavior case
Now they are solved. Port randomization is improved.
Socket test is not fragile anymore.
Closes #4451, #4426, #4469
---
Branch: https://github.com/tarantool/tarantool/tree/i.kosarev/gh-4426-4451-fix-socket-test
Issues: https://github.com/tarantool/tarantool/issues/4426
https://github.com/tarantool/tarantool/issues/4451
https://github.com/tarantool/tarantool/issues/4469
test/app/socket.result | 84 +++++++++++++++++++++++++---------------
test/app/socket.test.lua | 60 +++++++++++++++++++---------
test/app/suite.ini | 1 -
3 files changed, 94 insertions(+), 51 deletions(-)
diff --git a/test/app/socket.result b/test/app/socket.result
index fd299424c9..42dde8f375 100644
--- a/test/app/socket.result
+++ b/test/app/socket.result
@@ -45,6 +45,9 @@ test_run:cmd("push filter '(error: .builtin/.*[.]lua):[0-9]+' to '\\1'")
WAIT_COND_TIME = 10
---
...
+WAIT_TCP_CONNECT_TIME = 240
+---
+...
socket('PF_INET', 'SOCK_STREAM', 'tcp121222');
---
- null
@@ -107,7 +110,7 @@ s:nonblock(true)
---
- true
...
-s:readable(.1)
+s:readable(WAIT_TCP_CONNECT_TIME)
---
- true
...
@@ -227,7 +230,7 @@ s:syswrite(ffi.cast('const char *', ping), #ping)
---
- 6
...
-s:readable(1)
+s:readable(WAIT_TCP_CONNECT_TIME)
---
- true
...
@@ -830,7 +833,7 @@ sc:sendto('127.0.0.1', s:name().port, 'Hello, world')
---
- 12
...
-s:readable(10)
+s:readable(WAIT_TCP_CONNECT_TIME)
---
- true
...
@@ -842,7 +845,7 @@ sc:sendto('127.0.0.1', s:name().port, 'Hello, world, 2')
---
- 15
...
-s:readable(10)
+s:readable(WAIT_TCP_CONNECT_TIME)
---
- true
...
@@ -898,7 +901,7 @@ sc:sendto('127.0.0.1', s:name().port, 'Hello, World!')
---
- 13
...
-s:readable(1)
+s:readable(WAIT_TCP_CONNECT_TIME)
---
- true
...
@@ -1074,6 +1077,15 @@ master:setsockopt('SOL_SOCKET', 'SO_REUSEADDR', true)
---
- true
...
+seed = ''
+---
+...
+for d in string.gmatch(box.info.uuid, '%d') do seed = seed .. d end
+---
+...
+math.randomseed(tonumber(seed))
+---
+...
port = 32768 + math.random(0, 32767)
---
...
@@ -1092,7 +1104,7 @@ test_run:wait_cond(function()
return false, master:error()
end
return true
-end, WAIT_COND_TIME);
+end, 100);
---
- true
...
@@ -1822,8 +1834,14 @@ test_run:cmd("setopt delimiter ';'")
---
- true
...
+socket_opened = true
cfiber = fiber.create(function(sc, rch, wch)
- while sc:send(wch:get()) and rch:put(sc:receive("*l")) do end
+ while socket_opened do
+ sc:send(wch:get())
+ local data = sc:receive("*l")
+ if not socket_opened then sc:close() end
+ rch:put(data)
+ end
end, sc, rch, wch);
---
...
@@ -1936,6 +1954,9 @@ c:receive("*l")
---
-
...
+socket_opened = false
+---
+...
wch:put("Fu")
---
- true
@@ -1944,10 +1965,6 @@ c:send("354 Please type your message\n")
---
- 29
...
-sc:close()
----
-- 1
-...
c:receive("*l", "Line: ")
---
- null
@@ -2816,7 +2833,7 @@ test_run:cmd("clear filter")
---
- true
...
--- case: sicket receive inconsistent behavior
+-- case: socket receive inconsistent behavior
chan = fiber.channel()
---
...
@@ -2826,41 +2843,46 @@ counter = 0
fn = function(s) counter = 0; while true do s:write((tostring(counter)):rep(chan:get())); counter = counter + 1 end end
---
...
-srv = socket.tcp_server('0.0.0.0', 8888, fn)
+srv = nil
---
...
-s = socket.connect('localhost', 8888)
+test_run:cmd("setopt delimiter ';'")
---
+- true
...
-chan:put(5)
+test_run:wait_cond(function()
+ port = 32768 + math.random(0, 32767)
+ srv = socket.tcp_server('0.0.0.0', port, fn)
+ return srv ~= nil
+end, 100);
---
- true
...
-chan:put(5)
+receive1 = nil; receive2 = nil;
---
-- true
...
-s:receive(5)
+if srv ~= nil then
+ s = socket.connect('localhost', port)
+ chan:put(5)
+ chan:put(5)
+ receive1 = s:receive(5)
+ chan:put(5)
+ s:settimeout(1)
+ receive2 = s:receive('*a')
+ s:close()
+ srv:close()
+end;
---
-- '00000'
...
-chan:put(5)
+test_run:cmd("setopt delimiter ''");
---
- true
...
-s:settimeout(1)
+receive1
---
-- 1
+- '00000'
...
-s:receive('*a')
+receive2
---
- '1111122222'
...
-s:close()
----
-- 1
-...
-srv:close()
----
-- true
-...
diff --git a/test/app/socket.test.lua b/test/app/socket.test.lua
index c72d41763f..64f1e07471 100644
--- a/test/app/socket.test.lua
+++ b/test/app/socket.test.lua
@@ -14,6 +14,7 @@ test_run = env.new()
test_run:cmd("push filter '(error: .builtin/.*[.]lua):[0-9]+' to '\\1'")
WAIT_COND_TIME = 10
+WAIT_TCP_CONNECT_TIME = 240
socket('PF_INET', 'SOCK_STREAM', 'tcp121222');
@@ -39,7 +40,7 @@ s:nonblock(false)
s:nonblock()
s:nonblock(true)
-s:readable(.1)
+s:readable(WAIT_TCP_CONNECT_TIME)
s:wait(.1)
socket.iowait(s:fd(), 'RW')
socket.iowait(s:fd(), 3)
@@ -75,7 +76,7 @@ ping = msgpack.encode(string.len(ping)) .. ping
-- test syswrite with char *
s:syswrite(ffi.cast('const char *', ping), #ping)
-s:readable(1)
+s:readable(WAIT_TCP_CONNECT_TIME)
s:wait(.01)
pong = s:sysread()
@@ -266,11 +267,11 @@ s = socket('AF_INET', 'SOCK_DGRAM', 'udp')
s:bind('127.0.0.1', 0)
sc = socket('AF_INET', 'SOCK_DGRAM', 'udp')
sc:sendto('127.0.0.1', s:name().port, 'Hello, world')
-s:readable(10)
+s:readable(WAIT_TCP_CONNECT_TIME)
s:recv()
sc:sendto('127.0.0.1', s:name().port, 'Hello, world, 2')
-s:readable(10)
+s:readable(WAIT_TCP_CONNECT_TIME)
d, from = s:recvfrom()
from.port > 0
from.port = 'Random port'
@@ -286,7 +287,7 @@ sc = socket('AF_INET', 'SOCK_DGRAM', 'udp')
sc:nonblock(true)
sc:sendto('127.0.0.1', s:name().port)
sc:sendto('127.0.0.1', s:name().port, 'Hello, World!')
-s:readable(1)
+s:readable(WAIT_TCP_CONNECT_TIME)
data, from = s:recvfrom(10)
data
s:sendto(from.host, from.port, 'Hello, hello!')
@@ -343,6 +344,9 @@ s = nil
-- random port
master = socket('PF_INET', 'SOCK_STREAM', 'tcp')
master:setsockopt('SOL_SOCKET', 'SO_REUSEADDR', true)
+seed = ''
+for d in string.gmatch(box.info.uuid, '%d') do seed = seed .. d end
+math.randomseed(tonumber(seed))
port = 32768 + math.random(0, 32767)
-- SO_REUSEADDR allows to bind to the same source addr:port twice,
-- so listen() can return EADDRINUSE and so we check it within
@@ -356,7 +360,7 @@ test_run:wait_cond(function()
return false, master:error()
end
return true
-end, WAIT_COND_TIME);
+end, 100);
function gh361()
local s = socket('PF_INET', 'SOCK_STREAM', 'tcp')
s:sysconnect('127.0.0.1', port)
@@ -619,8 +623,14 @@ s:settimeout(100500)
rch, wch = fiber.channel(1), fiber.channel(1)
sc = socket.connect(host, port)
test_run:cmd("setopt delimiter ';'")
+socket_opened = true
cfiber = fiber.create(function(sc, rch, wch)
- while sc:send(wch:get()) and rch:put(sc:receive("*l")) do end
+ while socket_opened do
+ sc:send(wch:get())
+ local data = sc:receive("*l")
+ if not socket_opened then sc:close() end
+ rch:put(data)
+ end
end, sc, rch, wch);
test_run:cmd("setopt delimiter ''");
@@ -651,9 +661,9 @@ rch:get()
wch:put("DATA\n")
c:receive(4)
c:receive("*l")
+socket_opened = false
wch:put("Fu")
c:send("354 Please type your message\n")
-sc:close()
c:receive("*l", "Line: ")
c:receive()
c:receive(10)
@@ -960,18 +970,30 @@ server:close()
test_run:cmd("clear filter")
--- case: sicket receive inconsistent behavior
+-- case: socket receive inconsistent behavior
chan = fiber.channel()
counter = 0
fn = function(s) counter = 0; while true do s:write((tostring(counter)):rep(chan:get())); counter = counter + 1 end end
-srv = socket.tcp_server('0.0.0.0', 8888, fn)
-s = socket.connect('localhost', 8888)
-chan:put(5)
-chan:put(5)
-s:receive(5)
-chan:put(5)
-s:settimeout(1)
-s:receive('*a')
-s:close()
-srv:close()
+srv = nil
+test_run:cmd("setopt delimiter ';'")
+test_run:wait_cond(function()
+ port = 32768 + math.random(0, 32767)
+ srv = socket.tcp_server('0.0.0.0', port, fn)
+ return srv ~= nil
+end, 100);
+receive1 = nil; receive2 = nil;
+if srv ~= nil then
+ s = socket.connect('localhost', port)
+ chan:put(5)
+ chan:put(5)
+ receive1 = s:receive(5)
+ chan:put(5)
+ s:settimeout(1)
+ receive2 = s:receive('*a')
+ s:close()
+ srv:close()
+end;
+test_run:cmd("setopt delimiter ''");
+receive1
+receive2
diff --git a/test/app/suite.ini b/test/app/suite.ini
index 79432e29a7..dd802d98cf 100644
--- a/test/app/suite.ini
+++ b/test/app/suite.ini
@@ -7,4 +7,3 @@ use_unix_sockets = True
use_unix_sockets_iproto = True
is_parallel = True
pretest_clean = True
-fragile = socket.test.lua ; gh-4426 gh-4451
--
2.17.1
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