diff --git a/tests/automigration_test.go b/tests/automigration_test.go
deleted file mode 100644
index 0d6cfe5a..00000000
--- a/tests/automigration_test.go
+++ /dev/null
@@ -1,69 +0,0 @@
-package tests_test
-
-import (
-	"testing"
-	"time"
-)
-
-func TestSmartAutoMigrateColumnNullable(t *testing.T) {
-	fullSupported := map[string]bool{"mysql": true, "postgres": true}[DB.Dialector.Name()]
-
-	type UserMigrateColumn struct {
-		ID       uint
-		Name     string
-		Salary   float64
-		Bonus    float64 `gorm:"not null"`
-		Stock    float64
-		Birthday time.Time `gorm:"precision:4"`
-	}
-
-	DB.Migrator().DropTable(&UserMigrateColumn{})
-
-	DB.AutoMigrate(&UserMigrateColumn{})
-
-	type UserMigrateColumn2 struct {
-		ID                  uint
-		Name                string  `gorm:"size:128"`
-		Salary              float64 `gorm:"precision:2"`
-		Bonus               float64
-		Stock               float64   `gorm:"not null"`
-		Birthday            time.Time `gorm:"precision:2"`
-		NameIgnoreMigration string    `gorm:"size:100"`
-	}
-
-	if err := DB.Table("user_migrate_columns").AutoMigrate(&UserMigrateColumn2{}); err != nil {
-		t.Fatalf("failed to auto migrate, got error: %v", err)
-	}
-
-	columnTypes, err := DB.Table("user_migrate_columns").Migrator().ColumnTypes(&UserMigrateColumn{})
-	if err != nil {
-		t.Fatalf("failed to get column types, got error: %v", err)
-	}
-
-	for _, columnType := range columnTypes {
-		switch columnType.Name() {
-		case "name":
-			if length, _ := columnType.Length(); (fullSupported || length != 0) && length != 128 {
-				t.Fatalf("name's length should be 128, but got %v", length)
-			}
-		case "salary":
-			if precision, o, _ := columnType.DecimalSize(); (fullSupported || precision != 0) && precision != 2 {
-				t.Fatalf("salary's precision should be 2, but got %v %v", precision, o)
-			}
-		case "bonus":
-			// allow to change non-nullable to nullable
-			if nullable, _ := columnType.Nullable(); !nullable {
-				t.Fatalf("bonus's nullable should be true, bug got %t", nullable)
-			}
-		case "stock":
-			// do not allow to change nullable to non-nullable
-			if nullable, _ := columnType.Nullable(); !nullable {
-				t.Fatalf("stock's nullable should be true, bug got %t", nullable)
-			}
-		case "birthday":
-			if precision, _, _ := columnType.DecimalSize(); (fullSupported || precision != 0) && precision != 2 {
-				t.Fatalf("birthday's precision should be 2, but got %v", precision)
-			}
-		}
-	}
-}
diff --git a/tests/migrate_test.go b/tests/migrate_test.go
index d955c8d7..850f63a8 100644
--- a/tests/migrate_test.go
+++ b/tests/migrate_test.go
@@ -148,6 +148,8 @@ func TestSmartMigrateColumn(t *testing.T) {
 		ID       uint
 		Name     string
 		Salary   float64
+		Bonus    float64 `gorm:"not null"`
+		Stock    float64
 		Birthday time.Time `gorm:"precision:4"`
 	}
 
@@ -157,8 +159,10 @@ func TestSmartMigrateColumn(t *testing.T) {
 
 	type UserMigrateColumn2 struct {
 		ID                  uint
-		Name                string    `gorm:"size:128"`
-		Salary              float64   `gorm:"precision:2"`
+		Name                string  `gorm:"size:128"`
+		Salary              float64 `gorm:"precision:2"`
+		Bonus               float64
+		Stock               float64   `gorm:"not null"`
 		Birthday            time.Time `gorm:"precision:2"`
 		NameIgnoreMigration string    `gorm:"size:100"`
 	}
@@ -182,6 +186,16 @@ func TestSmartMigrateColumn(t *testing.T) {
 			if precision, o, _ := columnType.DecimalSize(); (fullSupported || precision != 0) && precision != 2 {
 				t.Fatalf("salary's precision should be 2, but got %v %v", precision, o)
 			}
+		case "bonus":
+			// allow to change non-nullable to nullable
+			if nullable, _ := columnType.Nullable(); !nullable {
+				t.Fatalf("bonus's nullable should be true, bug got %t", nullable)
+			}
+		case "stock":
+			// do not allow to change nullable to non-nullable
+			if nullable, _ := columnType.Nullable(); !nullable {
+				t.Fatalf("stock's nullable should be true, bug got %t", nullable)
+			}
 		case "birthday":
 			if precision, _, _ := columnType.DecimalSize(); (fullSupported || precision != 0) && precision != 2 {
 				t.Fatalf("birthday's precision should be 2, but got %v", precision)