Add E2E test for retag

Signed-off-by: FangyuanCheng <fangyuanc@vmware.com>

tests/resources/Harbor-Pages/Project-Retag.robot

@@ -0,0 +1,16 @@
+Documentation  This resource provides any keywords related to the Harbor private registry appliance
+Resource  ../../resources/Util.robot
+
+*** Keywords ***
+
+Retag Image
+    [Arguments]  ${tag}  ${projectname}  ${reponame}  ${tagname}
+    Click Element  xpath=//clr-dg-row[contains(.,"${tag}")]//label
+    Sleep  1
+    Click Element  xpath=${retag_btn}
+    Sleep  1
+    #input necessary info
+    Input Text  xpath=${project-name_xpath}  ${projectname}
+    Input Text  xpath=${repo-name_xpath}  ${reponame}
+    Input Text  xpath=${tag-name_xpath}  ${tagname}
+    Click Element  xpath=${confirm_btn}

tests/resources/Harbor-Pages/Project-Retag_Elements.robot

@@ -0,0 +1,14 @@
+*** Settings ***
+Documentation  This resource provides any keywords related to the Harbor private registry appliance
+
+*** Variables ***
+
+${retag_btn}  //clr-dg-action-bar//button[contains(.,'Retag')]
+${project-name_xpath}  //*[@id='project-name']
+${repo-name_xpath}  //*[@id='repo-name']
+${tag-name_xpath}  //*[@id='tag-name']
+${confirm_btn}  //button[contains(.,'CONFIRM')]
+${target_image_name}  target-alpine
+${target_tag_value}  3.2.10-target
+${tag_value_xpath}  //clr-dg-row[contains(.,'${target_tag_value}')]
+${image_tag}  3.2.10-alpine

tests/resources/Util.robot

@@ -39,6 +39,8 @@ Resource  Harbor-Pages/Project-Repository_Elements.robot
 Resource  Harbor-Pages/Project-Config.robot
 Resource  Harbor-Pages/Project-Helmcharts.robot
 Resource  Harbor-Pages/Project-Helmcharts_Elements.robot
+Resource  Harbor-Pages/Project-Retag.robot
+Resource  Harbor-Pages/Project-Retag_Elements.robot
 Resource  Harbor-Pages/Replication.robot
 Resource  Harbor-Pages/Replication_Elements.robot
 Resource  Harbor-Pages/UserProfile.robot

tests/robot-cases/Group1-Nightly/Common.robot

@@ -695,4 +695,29 @@ Test Case - Scan Image On Push
     Go Into Project  library
     Go Into Repo  memcached
     Summary Chart Should Display  latest
-    Close Browser
+    Close Browser
+
+Test Case - Retag A Image Tag
+    Init Chrome Driver
+    ${random_num1}=   Get Current Date    result_format=%m%s
+    ${random_num2}=   Evaluate  str(random.randint(1000,9999))  modules=random
+
+    Sign In Harbor  ${HARBOR_URL}  user028  Test1@34
+    Create An New Project  project${random_num1}
+    Create An New Project  project${random_num2}
+    
+    Go Into Project  project${random_num1}
+    Sleep  1
+    Push Image With Tag  ${ip}  user028  Test1@34  project${random_num1}  redis  ${image_tag}
+    Sleep  1
+    Go Into Repo  project${random_num1}/redis
+    Retag Image  ${image_tag}  project${random_num2}  ${target_image_name}  ${target_tag_value}
+
+    Back To projects
+    Go Into Project  project${random_num2}
+    Sleep  1
+    Page Should Contain  ${target_image_name}
+    Go Into Repo  project${random_num2}/${target_image_name}
+    Sleep  1
+    Page Should Contain Element  xpath=${tag_value_xpath}
+    Close Browser