Test suite for nginx.
Use prove to run tests as one usually do for perl tests.  Individual tests
may be run as well.
Note: tests run nginx (and backend daemons if needed) listening on localhost
and may use various ports in 8000 .. 8999 range.
Usage:
    $ TEST_NGINX_BINARY=/path/to/nginx prove .
By default tests expect nginx binary to be at ../nginx/objs/nginx.
Environment variables:
TEST_NGINX_BINARY
    Sets path to nginx binary to be tested, defaults to "../nginx/objs/nginx".
TEST_NGINX_MODULES
    Sets path to modules directory, defaults to dirname of TEST_NGINX_BINARY.
TEST_NGINX_VERBOSE
    Be a bit more verbose (in particular, print requests sent and responses
    got from nginx).  Note that this requires prove -v (or HARNESS_VERBOSE).
TEST_NGINX_LEAVE
    If set, temporary directory with configs and logs won't be deleted on test
    completion.  Useful for debugging.
TEST_NGINX_CATLOG
    Cat error log to stdout after test completion.  Useful for debugging.
TEST_NGINX_UNSAFE
    Run unsafe tests.
TEST_NGINX_GLOBALS
    Sets additional directives in main context.
TEST_NGINX_GLOBALS_HTTP
    Sets additional directives in http context.
TEST_NGINX_GLOBALS_STREAM
    Sets additional directives in stream context.
Happy testing!