Fix and test for delete user (#1713)

* Fix and test for delete user

* Run updates in batches

* Unit test

integrations/delete_user_test.go

@@ -0,0 +1,41 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package integrations
+
+import (
+	"bytes"
+	"net/http"
+	"net/url"
+	"testing"
+
+	"code.gitea.io/gitea/models"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDeleteUser(t *testing.T) {
+	prepareTestEnv(t)
+
+	session := loginUser(t, "user1", "password")
+
+	req, err := http.NewRequest("GET", "/admin/users/8", nil)
+	assert.NoError(t, err)
+	resp := session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+
+	doc, err := NewHtmlParser(resp.Body)
+	assert.NoError(t, err)
+	req, err = http.NewRequest("POST", "/admin/users/8/delete",
+		bytes.NewBufferString(url.Values{
+			"_csrf": []string{doc.GetInputValueByName("_csrf")},
+		}.Encode()))
+	assert.NoError(t, err)
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	resp = session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+
+	models.AssertNotExistsBean(t, &models.User{ID: 8})
+	models.CheckConsistencyFor(t, &models.User{})
+}