[MODERATION] Purge issues on user deletion (squash)

(cherry picked from commit 4f529d9596)
(cherry picked from commit f0e3acadd3)
(cherry picked from commit 682c4effe6)
(cherry picked from commit eb99857433)
(cherry picked from commit 9af6e03aab)

tests/integration/admin_user_test.go

@@ -4,10 +4,12 @@
 package integration
 
 import (
+	"fmt"
 	"net/http"
 	"strconv"
 	"testing"
 
+	issues_model "code.gitea.io/gitea/models/issues"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/tests"
@@ -68,17 +70,22 @@ func makeRequest(t *testing.T, formData user_model.User, headerCode int) {
 }
 
 func TestAdminDeleteUser(t *testing.T) {
+	defer tests.AddFixtures("tests/integration/fixtures/TestAdminDeleteUser/")()
 	defer tests.PrepareTestEnv(t)()
 
 	session := loginUser(t, "user1")
 
-	csrf := GetCSRF(t, session, "/admin/users/8/edit")
-	req := NewRequestWithValues(t, "POST", "/admin/users/8/delete", map[string]string{
+	userID := int64(1000)
+
+	unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{PosterID: userID})
+
+	csrf := GetCSRF(t, session, fmt.Sprintf("/admin/users/%d/edit", userID))
+	req := NewRequestWithValues(t, "POST", fmt.Sprintf("/admin/users/%d/delete", userID), map[string]string{
 		"_csrf": csrf,
 		"purge": "true",
 	})
 	session.MakeRequest(t, req, http.StatusSeeOther)
 
-	assertUserDeleted(t, 8, true)
+	assertUserDeleted(t, userID, true)
 	unittest.CheckConsistencyFor(t, &user_model.User{})
 }