diff --git a/test/testcases/kmesh.json b/test/testcases/kmesh.json
index 2dda4b09558028e79298bcd86689bcc844dd2fb8..1fa926a92604d68e74b42f4981e4c17b71af9b55 100644
--- a/test/testcases/kmesh.json
+++ b/test/testcases/kmesh.json
@@ -6,6 +6,9 @@
 	},
 	{
             "name": "oe_test_lb_policy_function"
+        },
+        {
+	    "name": "oe_test_dark_launch_function"
         }
     ]
 }
diff --git a/test/testcases/kmesh/oe_test_dark_launch_function/conf/test_conf.json b/test/testcases/kmesh/oe_test_dark_launch_function/conf/test_conf.json
new file mode 100644
index 0000000000000000000000000000000000000000..97c7f134c89061ae832c2c326ef255882b50c8d0
--- /dev/null
+++ b/test/testcases/kmesh/oe_test_dark_launch_function/conf/test_conf.json
@@ -0,0 +1,122 @@
+{
+    "staticResources":{
+      "versionInfo":"v2",
+      "listenerConfigs":[
+        {
+          "apiStatus":"UPDATE",
+          "name":"127.0.0.1_9081",
+          "address":{
+            "port":31011,
+            "ipv4":16777343
+          },
+          "filterChains":[
+            {
+              "filterChainMatch":{
+                "transportProtocol":"raw_buffer",
+                "applicationProtocols":[
+                  "http/1.0",
+                  "http/1.1",
+                  "h2c"
+                ]
+              },
+              "filters":[
+                {
+                  "name":"envoy.filters.network.http_connection_manager",
+                  "httpConnectionManager":{
+                    "routeConfigName":"9080"
+                  }
+                }
+              ]
+            }
+          ]
+        }
+      ],
+      "routeConfigs":[
+        {
+          "apiStatus":"UPDATE",
+          "name":"9080",
+          "virtualHosts":[
+            {
+              "name":"details.default.svc.cluster.local:9080",
+              "domains":[
+                "*"
+              ],
+              "routes":[
+                {
+                  "name":"default",
+                  "match":{
+                    "prefix":"/"
+                  },
+                  "route": {
+                    "weighted_clusters": {
+                      "clusters": [
+                        {
+                          "name": "outbound|9080|v1|details.default.svc.cluster.local",
+                          "weight": 80
+                        },
+                        {
+                          "name": "outbound|9080|v2|details.default.svc.cluster.local",
+                          "weight": 20
+                        }
+                      ] 
+                    },                    
+                    "retryPolicy": {
+                      "numRetries": 2
+                    }
+                  }
+                }
+              ]
+            }
+          ]
+        }
+      ],
+      "clusterConfigs":[
+        {
+          "apiStatus":"UPDATE",
+          "name":"outbound|9080|v1|details.default.svc.cluster.local",
+          "connectTimeout":10,
+          "lb_policy":"ROUND_ROBIN",
+          "loadAssignment":{
+            "clusterName":"outbound|9080|v1|details.default.svc.cluster.local",
+            "endpoints":[
+              {
+                "lbEndpoints":[
+                  {
+                    "address":{
+                      "port":32035,
+                      "ipv4":16777343
+                    }
+                  }
+                ],
+                "loadBalancingWeight":1
+              }
+            ]
+          }
+        },
+        {
+          "apiStatus":"UPDATE",
+          "name":"outbound|9080|v2|details.default.svc.cluster.local",
+          "connectTimeout":10,
+          "lb_policy":"ROUND_ROBIN",
+          "loadAssignment":{
+            "clusterName":"outbound|9080|v2|details.default.svc.cluster.local",
+            "endpoints":[
+              {
+                "lbEndpoints":[
+                  {
+                    "address":{
+                      "port":32291,
+                      "ipv4":16777343
+                    }
+                  }
+                ],
+                "loadBalancingWeight":1
+              }
+            ]
+          }
+        }
+      ]
+    }
+  }
+
+
diff --git a/test/testcases/kmesh/oe_test_dark_launch_function/oe_test_dark_launch_function.sh b/test/testcases/kmesh/oe_test_dark_launch_function/oe_test_dark_launch_function.sh
new file mode 100644
index 0000000000000000000000000000000000000000..b227a8b88d45712ae3aaa83d7d65a32e7e25f1d8
--- /dev/null
+++ b/test/testcases/kmesh/oe_test_dark_launch_function/oe_test_dark_launch_function.sh
@@ -0,0 +1,62 @@
+#!/usr/bin/bash
+
+source ${OET_PATH}/libs/locallibs/common_lib.sh
+source ../libs/common.sh
+
+CURRENT_PATH=$(pwd)
+
+function pre_test() {
+    LOG_INFO "Start environmental preparation."
+
+    env_init
+
+    LOG_INFO "End of environmental preparation!"
+}
+
+function run_test() {
+    LOG_INFO "Start testing..."
+
+    # exits the shell when $? is not 0
+    set -e
+
+    # start fortio server 9085 
+    # start fortio server 9086
+    start_fortio_server -http-port 127.0.0.1:9085 -echo-server-default-params="header=server:1"
+    start_fortio_server -http-port 127.0.0.1:9086 -echo-server-default-params="header=server:2"
+
+    # start kmesh-daemon
+    start_kmesh
+
+    # use kmesh-cmd load conf and check conf load ok
+    load_kmesh_config
+    
+    # curl 100 times, Server: 1 and Server: 2 should be 8:2
+    curl -v http://127.0.0.1:9081 > tmp_trace.log 2>&1
+    for ((i=0;i<99;i++))
+    do
+        curl -v http://127.0.0.1:9081 >> tmp_trace.log 2>&1
+    done
+    a=`grep -c 'Server: 1' tmp_trace.log`
+    b=`grep -c 'Server: 2' tmp_trace.log`
+    if [ $a -gt 70 ]&&[ $a -lt 90 ]&&[ $b -lt 30 ]&&[ $b -gt 10 ];then
+	result=0
+    else
+	result=1
+    fi
+
+    CHECK_RESULT $result 0 0 "bad dark launch"
+
+    LOG_INFO "Finish test!"
+}
+
+function post_test() {
+    LOG_INFO "start environment cleanup."
+
+    cleanup
+
+    LOG_INFO "Finish environment cleanup!"
+}
+
+main "$@"
+
+