Test::Nginx to validate cache behaviour

cache_test.t

use Test::Nginx::Socket 'no_plan';
no warnings;

no_diff;

#repeat_each(5);
run_tests();

__DATA__

=== TEST 3: test_proxy_cache
--- http_config
proxy_cache_path /tmp/cache levels=1:2 use_temp_path=on keys_zone=auth_cache:10m;
upstream cluster {

    server 127.0.0.1:9999;
    # the following will only work if you're using the upstream health check module
    # comment the next three lines out if not
    check interval=3000 rise=1 fall=1 timeout=1000 type=http default_down=false;
    check_http_send "GET /up HTTP/1.0\r\n\r\n";
    check_http_expect_alive http_2xx http_3xx;
}

server {
	listen 127.0.0.1:9999;

	location /up {
		echo up;
	}

	location / {
		auth_basic "Restricted";
		auth_basic_user_file /t/htpasswd;
		echo $remote_user;
	}

}
--- config
location /auth {
	proxy_cache_key "$http_authorization:$scheme:$proxy_host:$request_uri";
	proxy_cache auth_cache;
	proxy_cache_valid any 15s;
	add_header X-Cache-Status $upstream_cache_status;
	proxy_cache_methods GET;
	proxy_pass http://cluster;
}

--- more_headers eval
["Authorization: Basic dXNlcjE6dXNlcjFwYXNz",
"Authorization: Basic dXNlcjE6dXNlcjFwYXNz",
"Authorization: Basic dXNlcjE6dXNlcjFwYXNz",
"Authorization: Basic dXNlcjE6dXNlcjFwYXNz",
"Authorization: Basic dXNlcjI6dXNlcjJwYXNz"]
--- request eval
["GET /auth",
"GET /auth",
"GET /auth",
"GET /auth",
"GET /auth"]
--- response_headers eval
["X-Cache-Status: MISS",
"X-Cache-Status: HIT",
"X-Cache-Status: HIT",
"X-Cache-Status: HIT",
"X-Cache-Status: MISS"]
--- response_body eval
["user1\n",
"user1\n",
"user1\n",
"user1\n",
"user2\n"]
--- error_code eval
["200", "200","200","200", "200"]

htpasswd

user1:$apr1$Qvwr0dJh$1BUVspwNFbDtlQ1jzf9Ft.
user2:$apr1$O061IwuG$4NUV0xoQmiMGv6ua5mx1a/