fix(plugins/bk-traffic-label.lua): if the weight = 0, should not chan…

…ge to 1

src/apisix/plugins/bk-traffic-label.lua

@@ -98,7 +98,7 @@ function _M.check_schema(conf)
             -- Calculate total weight of all actions and preprocess actions to set default weight
             local total_weight = 0
             for _, action in ipairs(rule.actions) do
-                if action.weight == nil or action.weight <= 0 then
+                if action.weight == nil or action.weight < 0 then
                     action.weight = 1
                 end
                 total_weight = total_weight + action.weight

src/apisix/t/bk-traffic-label.t

@@ -231,7 +231,7 @@ GET /t
 --- response_body
 passed
 
-=== TEST 6: match hit set_headers
+=== TEST 8: match hit set_headers
 --- request
 GET /hello?env=prod
 --- response_body
@@ -240,7 +240,7 @@ host: localhost
 x-real-ip: 127.0.0.1
 x-test-header: test2
 
-=== TEST 7: only the action with non-zero weight is applied, but do nothing
+=== TEST 9: only the action with non-zero weight is applied, but do nothing
 --- config
     location /t {
         content_by_lua_block {
@@ -287,15 +287,15 @@ GET /t
 --- response_body
 passed
 
-=== TEST 8: match hit set_headers
+=== TEST 10: match hit set_headers
 --- request
 GET /hello?env=prod
 --- response_body
 uri: /uri/plugin_proxy_rewrite
 host: localhost
 x-real-ip: 127.0.0.1
 
-=== TEST 9: multiple matches, all hit
+=== TEST 11: multiple matches, all hit
 --- config
     location /t {
         content_by_lua_block {
@@ -349,7 +349,7 @@ GET /t
 --- response_body
 passed
 
-=== TEST 10: multiple matches, only hit one
+=== TEST 12: multiple matches, only hit one
 --- request
 GET /hello?env=dev&type=foo
 --- response_body
@@ -358,7 +358,7 @@ host: localhost
 x-real-ip: 127.0.0.1
 x-test-header-2: test2
 
-=== TEST 10: multiple matches, hit both
+=== TEST 13: multiple matches, hit both
 --- request
 GET /hello?env=prod&type=foo
 --- response_body