bugfix: got error when match var and have no uri args (#40)

Author: linsir

lib/resty/radixtree.lua

@@ -599,6 +599,9 @@ local function match_route_opts(route, opts, ...)
             l_v = vars[l_v]
 
             -- ngx.log(ngx.INFO, l_v, op, r_v)
+            if l_v == nil or r_v == nil then
+                return false
+            end
             if not compare_val(l_v, op, r_v, opts) then
                 return false
             end

t/vars.t

@@ -445,3 +445,30 @@ nil
 nil
 nil
 nil
+
+
+
+=== TEST 16: have no uri args
+--- config
+    location /t {
+        content_by_lua_block {
+            local radix = require("resty.radixtree")
+            local rx = radix.new({
+                {
+                    paths = "/aa",
+                    metadata = "metadata /aa",
+                    vars = {
+                        {"arg_k", ">", 10},
+                    },
+                }
+            })
+
+            ngx.say(rx:match("/aa", {vars = {}}))
+        }
+    }
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+nil