Merge pull request #5702 from taosdata/test/testcase

 fix changing target branch

Jenkinsfile

@@ -42,8 +42,24 @@ def pre_test(){
     killall -9 taosd ||echo "no taosd running"
     killall -9 gdb || echo "no gdb running"
     cd ${WKC}
-    git reset --hard HEAD~10 >/dev/null 
-    git checkout develop
+    git reset --hard HEAD~10 >/dev/null
+    '''
+    script {
+      if (env.CHANGE_TARGET == 'master') {
+        sh '''
+        cd ${WKC}
+        git checkout master
+        '''
+        }
+      else {
+        sh '''
+        cd ${WKC}
+        git checkout develop
+        '''
+      } 
+    }
+    sh'''
+    cd ${WKC}
     git pull >/dev/null
     git fetch origin +refs/pull/${CHANGE_ID}/merge
     git checkout -qf FETCH_HEAD
@@ -53,15 +69,22 @@ def pre_test(){
     '''
     script {
       if (env.CHANGE_TARGET == 'master') {
-        sh 'git checkout master'
+        sh '''
+        cd ${WK}
+        git checkout master
+        '''
         }
       else {
-        sh 'git checkout develop'
+        sh '''
+        cd ${WK}
+        git checkout develop
+        '''
       } 
     }
     sh '''
-    git pull >/dev/null 
     cd ${WK}
+    git pull >/dev/null 
+
     export TZ=Asia/Harbin
     date
     git clean -dfx