Move db related basic functions to models/db (#17075)

* Move db related basic functions to models/db

* Fix lint

* Fix lint

* Fix test

* Fix lint

* Fix lint

* revert unnecessary change

* Fix test

* Fix wrong replace string

* Use *Context

* Correct committer spelling and fix wrong replaced words

Co-authored-by: zeripath <art27@cantab.net>

models/models_test.go

@@ -1,80 +0,0 @@
-// Copyright 2019 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 models
-
-import (
-	"encoding/json"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	"code.gitea.io/gitea/modules/setting"
-	"xorm.io/xorm/schemas"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestDumpDatabase(t *testing.T) {
-	assert.NoError(t, PrepareTestDatabase())
-
-	dir, err := ioutil.TempDir(os.TempDir(), "dump")
-	assert.NoError(t, err)
-
-	type Version struct {
-		ID      int64 `xorm:"pk autoincr"`
-		Version int64
-	}
-	assert.NoError(t, x.Sync2(new(Version)))
-
-	for _, dbName := range setting.SupportedDatabases {
-		dbType := setting.GetDBTypeByName(dbName)
-		assert.NoError(t, DumpDatabase(filepath.Join(dir, dbType+".sql"), dbType))
-	}
-}
-
-type TestSource struct {
-	Provider                      string
-	ClientID                      string
-	ClientSecret                  string
-	OpenIDConnectAutoDiscoveryURL string
-	IconURL                       string
-}
-
-// FromDB fills up a LDAPConfig from serialized format.
-func (source *TestSource) FromDB(bs []byte) error {
-	return json.Unmarshal(bs, &source)
-}
-
-// ToDB exports a LDAPConfig to a serialized format.
-func (source *TestSource) ToDB() ([]byte, error) {
-	return json.Marshal(source)
-}
-
-func TestDumpLoginSource(t *testing.T) {
-	assert.NoError(t, PrepareTestDatabase())
-
-	loginSourceSchema, err := x.TableInfo(new(LoginSource))
-	assert.NoError(t, err)
-
-	RegisterLoginTypeConfig(LoginOAuth2, new(TestSource))
-
-	CreateLoginSource(&LoginSource{
-		Type:     LoginOAuth2,
-		Name:     "TestSource",
-		IsActive: false,
-		Cfg: &TestSource{
-			Provider: "ConvertibleSourceName",
-			ClientID: "42",
-		},
-	})
-
-	sb := new(strings.Builder)
-
-	x.DumpTables([]*schemas.Table{loginSourceSchema}, sb)
-
-	assert.Contains(t, sb.String(), `"Provider":"ConvertibleSourceName"`)
-}