Update Preload Many2Many tests

preload_test.go

@@ -624,21 +624,47 @@ func TestManyToManyPreload(t *testing.T) {
 	}
 
 	want := Level2{Value: "Bob", Level1s: []Level1{
-		Level1{Value: "ru"},
+		{Value: "ru"},
-		Level1{Value: "en"},
+		{Value: "en"},
 	}}
 	if err := DB.Save(&want).Error; err != nil {
 		panic(err)
 	}
 
+	want2 := Level2{Value: "Tom", Level1s: []Level1{
+		{Value: "zh"},
+		{Value: "de"},
+	}}
+	if err := DB.Save(&want2).Error; err != nil {
+		panic(err)
+	}
+
 	var got Level2
-	if err := DB.Preload("Level1s").Find(&got).Error; err != nil {
+	if err := DB.Preload("Level1s").Find(&got, "value = ?", "Bob").Error; err != nil {
 		panic(err)
 	}
 
 	if !reflect.DeepEqual(got, want) {
 		t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
 	}
+
+	var got2 Level2
+	if err := DB.Preload("Level1s").Find(&got2, "value = ?", "Tom").Error; err != nil {
+		panic(err)
+	}
+
+	if !reflect.DeepEqual(got2, want2) {
+		t.Errorf("got %s; want %s", toJSONString(got2), toJSONString(want2))
+	}
+
+	var got3 []Level2
+	if err := DB.Preload("Level1s").Find(&got3, "value IN (?)", []string{"Bob", "Tom"}).Error; err != nil {
+		panic(err)
+	}
+
+	if !reflect.DeepEqual(got3, []Level2{got, got2}) {
+		t.Errorf("got %s; want %s", toJSONString(got3), toJSONString([]Level2{got, got2}))
+	}
 }
 
 func toJSONString(v interface{}) []byte {