From 79fc3ac54e2a5c9c63138ccafdc4ee8d89937d9e Mon Sep 17 00:00:00 2001
From: An Tran <tkan145@gmail.com>
Date: Thu, 28 Sep 2023 23:04:14 +1000
Subject: [PATCH] Add more unittest

---
 t/apicast-policy-buffering.t | 113 +++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)

diff --git a/t/apicast-policy-buffering.t b/t/apicast-policy-buffering.t
index cdd1c3e3e..3e9b9fbb4 100644
--- a/t/apicast-policy-buffering.t
+++ b/t/apicast-policy-buffering.t
@@ -1,6 +1,20 @@
 use lib 't';
 use Test::APIcast::Blackbox 'no_plan';
 
+require("http_proxy.pl");
+
+sub large_body {
+  my $res = "";
+  for (my $i=0; $i <= 1024; $i++) {
+    $res = $res . "1111111 1111111 1111111 1111111\n";
+  }
+  return $res;
+}
+
+$ENV{'LARGE_BODY'} = large_body();
+
+require("policies.pl");
+
 run_tests();
 
 __DATA__
@@ -50,3 +64,102 @@ GET /?user_key=
 "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n5\r\nhello\r\n0\r\n\r\n"
 --- response_body chomp
 hello
+
+
+=== TEST 2: default configuration (buffered) with big file
+--- configuration
+{
+  "services": [
+    {
+      "backend_version":  1,
+      "proxy": {
+        "api_backend": "http://test-upstream.lvh.me:$TEST_NGINX_SERVER_PORT/",
+        "proxy_rules": [
+          { "pattern": "/", "http_method": "POST", "metric_system_name": "hits", "delta": 2 }
+        ],
+        "policy_chain": [
+          {
+            "name": "buffering",
+            "version": "builtin",
+            "configuration": {}
+          },
+          {
+            "name": "apicast",
+            "version": "builtin",
+            "configuration": {}
+          }
+        ]
+      }
+    }
+  ]
+}
+--- backend
+location /transactions/authrep.xml {
+  content_by_lua_block {
+    ngx.exit(200)
+  }
+}
+--- upstream
+server_name test-upstream.lvh.me;
+  location / {
+    access_by_lua_block {
+      ngx.say("yay, api backend")
+    }
+  }
+--- request eval
+"POST /?user_key= \n" . $ENV{LARGE_BODY}
+--- error_code: 200
+--- error_log env
+a client request body is buffered to a temporary file
+--- no_error_log
+
+
+=== TEST 3: request buffering off (un-buffered) with big file
+--- ONLY
+--- configuration
+{
+  "services": [
+    {
+      "backend_version":  1,
+      "proxy": {
+        "api_backend": "http://test-upstream.lvh.me:$TEST_NGINX_SERVER_PORT/",
+        "proxy_rules": [
+          { "pattern": "/", "http_method": "POST", "metric_system_name": "hits", "delta": 2 }
+        ],
+        "policy_chain": [
+          {
+            "name": "buffering",
+            "version": "builtin",
+            "configuration": {
+                "request_buffering":  false
+            }
+          },
+          {
+            "name": "apicast",
+            "version": "builtin",
+            "configuration": {}
+          }
+        ]
+      }
+    }
+  ]
+}
+--- backend
+location /transactions/authrep.xml {
+  content_by_lua_block {
+    ngx.exit(200)
+  }
+}
+--- upstream
+server_name test-upstream.lvh.me;
+  location / {
+    access_by_lua_block {
+      ngx.say("yay, api backend")
+    }
+  }
+--- request eval
+"POST /?user_key= \n" . $ENV{LARGE_BODY}
+--- error_code: 200
+--- grep_error_log
+a client request body is buffered to a temporary file
+--- grep_error_log_out