Few test case failures on rhel 7.6 ppc64le

Hi All,

I had build the nginx binary on rhel 7.6 ppc64le (version 1.17.1.1rc0) from source code - https://github.com/openresty/openresty.
Please note that, I had copied and used ppc64le compiled LuaJIT code while building openresty (nginx).

Below command I used to compile the openresty -

./configure --with-cc-opt="-DNGX_LUA_USE_ASSERT -DNGX_LUA_ABORT_AT_PANIC" --with-http_image_filter_module --with-http_dav_module  --with-http_auth_request_module --with-poll_module --with-stream --with-stream_ssl_module --with-stream_ssl_preread_module --with-http_ssl_module --with-http_iconv_module  --with-http_drizzle_module --with-http_postgres_module --with-http_addition_module --add-module=/usr/openresty/openresty_test_modules/nginx-eval-module --add-module=/usr/openresty/openresty_test_modules/replace-filter-nginx-module

And then tried to execute the test cases for 'lua-resty-memcached' like below -

# pwd
/usr/openresty/openresty/openresty-1.17.1.1rc0/build/lua-resty-memcached-0.14
# prove -r t/

NOTE: The 'lua-resty-memcached' version downloaded from openresty bundle is 0.14

And I am getting below kind of errors -

# prove -r t/
t/mock.t ...... 1/40
#   Failed test 'TEST 2: continue using the obj when read timeout happens - tcp_query ok'
#   at /usr/local/share/perl5/Test/Nginx/Util.pm line 188.
#          got: ''
#     expected: 'get foo
# '

#   Failed test 'TEST 2: continue using the obj when read timeout happens - TCP query length ok'
#   at /usr/local/share/perl5/Test/Nginx/Util.pm line 1276.
#          got: '0'
#     expected: '9'
TEST 2: continue using the obj when read timeout happens - WARNING: killing the child process 19031 with force... at /usr/local/share/perl5/Test/Nginx/Util.pm line 609.
t/mock.t ...... 23/40 # Looks like you failed 2 tests of 40.
t/mock.t ...... Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/40 subtests
t/sanity.t .... 18/220 WARNING: TEST 38: gets (multiple key) + change only unescape key - 2019/10/14 15:55:53 [warn] 19202#0: *1 [lua] _G write guard:12: __newindex(): writing a global lua variable ('identity') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
t/sanity.t .... 73/220
#   Failed test 'ERROR: client socket timed out - TEST 29: connect timeout
# '
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 2062.

#   Failed test 'TEST 29: connect timeout - status code ok'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 948.
#          got: ''
#     expected: '200'

#   Failed test 'TEST 29: connect timeout - response_body - response is expected (repeated req 0, req 0)'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 1589.
#          got: ''
#     expected: 'failed to connect: timeout
# '

#   Failed test 'TEST 29: connect timeout - pattern "lua tcp socket connect timed out" should match a line in error.log (req 0)'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 1213.
t/sanity.t .... 77/220
#   Failed test 'ERROR: client socket timed out - TEST 29: connect timeout
# '
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 2062.

#   Failed test 'TEST 29: connect timeout - status code ok'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 948.
#          got: ''
#     expected: '200'

#   Failed test 'TEST 29: connect timeout - response_body - response is expected (repeated req 1, req 0)'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 1589.
#          got: ''
#     expected: 'failed to connect: timeout
# '

#   Failed test 'TEST 29: connect timeout - pattern "lua tcp socket connect timed out" should match a line in error.log (req 1)'
#   at /usr/local/share/perl5/Test/Nginx/Socket.pm line 1213.
t/sanity.t .... 146/220 WARNING: TEST 37: change escape method - 2019/10/14 15:56:05 [warn] 19339#0: *1 [lua] _G write guard:12: __newindex(): writing a global lua variable ('identity') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
t/sanity.t .... Failed 8/220 subtests
t/tableset.t .. ok
t/touch.t ..... ok
t/version.t ... ok

Test Summary Report
-------------------
t/mock.t    (Wstat: 512 Tests: 40 Failed: 2)
  Failed tests:  4-5
  Non-zero exit status: 2
t/sanity.t  (Wstat: 0 Tests: 222 Failed: 10)
  Failed tests:  73-80, 221-222
  Parse errors: Bad plan.  You planned 220 tests but ran 222.
Files=5, Tests=288, 50 wallclock secs ( 0.11 usr  0.00 sys +  2.25 cusr  0.69 csys =  3.05 CPU)
Result: FAIL

Please help suggest if I need to export any specific environment or should try any compiler flag/somehow increase the timeout value to make these test cases pass.

nginx version (compiled with libdrizzle 1.0 and radius, mariadb, postgresql services setup) -

# nginx -V
nginx version: openresty/1.17.1.1rc0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/openresty/nginx --with-cc-opt='-O2 -DNGX_LUA_USE_ASSERT -DNGX_LUA_ABORT_AT_PANIC' --add-module=../ngx_devel_kit-0.3.1rc1 --add-module=../iconv-nginx-module-0.14 --add-module=../echo-nginx-module-0.61 --add-module=../xss-nginx-module-0.06 --add-module=../ngx_coolkit-0.2 --add-module=../set-misc-nginx-module-0.32 --add-module=../form-input-nginx-module-0.12 --add-module=../encrypted-session-nginx-module-0.08 --add-module=../drizzle-nginx-module-0.1.11 --add-module=../ngx_postgres-1.0 --add-module=../srcache-nginx-module-0.31 --add-module=../ngx_lua-0.10.15 --add-module=../ngx_lua_upstream-0.07 --add-module=../headers-more-nginx-module-0.33 --add-module=../array-var-nginx-module-0.05 --add-module=../memc-nginx-module-0.19 --add-module=../redis2-nginx-module-0.15 --add-module=../redis-nginx-module-0.3.7 --add-module=../rds-json-nginx-module-0.15 --add-module=../rds-csv-nginx-module-0.09 --add-module=../ngx_stream_lua-0.0.7 --with-ld-opt=-Wl,-rpath,/usr/local/openresty/luajit/lib --with-http_image_filter_module --with-http_dav_module --with-http_auth_request_module --with-poll_module --with-stream --with-stream_ssl_module --with-stream_ssl_preread_module --with-http_ssl_module --with-http_addition_module --add-module=/usr/openresty/openresty_test_modules/nginx-eval-module --add-module=/usr/openresty/openresty_test_modules/replace-filter-nginx-module --with-stream --with-stream_ssl_preread_module

Begin by reproducing the failures with prove -r t/ on RHEL 7.6 ppc64le, focusing on t/mock.t and t/sanity.t. Review the reported Test/Nginx/Util.pm and Test/Nginx/Socket.pm failures and compare the configured OpenResty/LuaJIT environment. Done means identifying the platform-specific cause and obtaining a clean test result, or documenting the exact unsupported condition.