feat(migrator,migrator/migrator.go,tests/migrate_test.go) : Get multiple data tables for migrator. (#4841)

* feat(migrator,migrator/migrator.go,tests/migrate_test.go) : Get multiple data tables for migrator.

* feat(migrator.go and migrator/migrator.go) : remove Table Struct replace with []string

* fix(migrator)  : Return all data tables

* Update migrator.go

* fix(migrator/migrator.go):remove var sql

* feat(migrate_test.go/go.mod):update sqlserver,sqlite,postgres,pq version and add getTables test

* fix(migrate_test.go):change GetTables Method Test,use intersection

Co-authored-by: dino.ma <mashengjie03@baidu.com>

migrator.go

@@ -54,6 +54,7 @@ type Migrator interface {
 	DropTable(dst ...interface{}) error
 	HasTable(dst interface{}) bool
 	RenameTable(oldName, newName interface{}) error
+	GetTables() (tableList []string, err error)
 
 	// Columns
 	AddColumn(dst interface{}, field string) error

migrator/migrator.go

@@ -155,6 +155,10 @@ func (m Migrator) AutoMigrate(values ...interface{}) error {
 	return nil
 }
 
+func (m Migrator) GetTables() (tableList []string, err error) {
+	return tableList, m.DB.Raw("SELECT TABLE_NAME FROM information_schema.tables where TABLE_SCHEMA=?", m.CurrentDatabase()).Scan(&tableList).Error
+}
+
 func (m Migrator) CreateTable(values ...interface{}) error {
 	for _, value := range m.ReorderModels(values, false) {
 		tx := m.DB.Session(&gorm.Session{})

tests/go.mod

@@ -5,11 +5,11 @@ go 1.14
 require (
 	github.com/google/uuid v1.3.0
 	github.com/jinzhu/now v1.1.2
-	github.com/lib/pq v1.10.3
+	github.com/lib/pq v1.10.4
 	gorm.io/driver/mysql v1.1.3
-	gorm.io/driver/postgres v1.2.1
+	gorm.io/driver/postgres v1.2.2
-	gorm.io/driver/sqlite v1.2.3
+	gorm.io/driver/sqlite v1.2.4
-	gorm.io/driver/sqlserver v1.2.0
+	gorm.io/driver/sqlserver v1.2.1
 	gorm.io/gorm v1.22.2
 )
 

tests/migrate_test.go

@@ -14,7 +14,6 @@ func TestMigrate(t *testing.T) {
 	allModels := []interface{}{&User{}, &Account{}, &Pet{}, &Company{}, &Toy{}, &Language{}}
 	rand.Seed(time.Now().UnixNano())
 	rand.Shuffle(len(allModels), func(i, j int) { allModels[i], allModels[j] = allModels[j], allModels[i] })
-
 	DB.Migrator().DropTable("user_speaks", "user_friends", "ccc")
 
 	if err := DB.Migrator().DropTable(allModels...); err != nil {
@@ -25,6 +24,23 @@ func TestMigrate(t *testing.T) {
 		t.Fatalf("Failed to auto migrate, but got error %v", err)
 	}
 
+	if tables, err := DB.Migrator().GetTables(); err != nil {
+		t.Fatalf("Failed to get database all tables, but got error %v", err)
+	} else {
+		for _, t1 := range []string{"users", "accounts", "pets", "companies", "toys", "languages"} {
+			hasTable := false
+			for _, t2 := range tables {
+				if t2 == t1 {
+					hasTable = true
+					break
+				}
+			}
+			if !hasTable {
+				t.Fatalf("Failed to get table %v when GetTables", t1)
+			}
+		}
+	}
+
 	for _, m := range allModels {
 		if !DB.Migrator().HasTable(m) {
 			t.Fatalf("Failed to create table for %#v---", m)