t.Fatalf("No error should raise, but got %v", err)
	}

	if err = tx.First(&User{}, "name = ?", "transaction").Error; err != nil {
		t.Fatalf("Should find saved record, but got %v", err)
	}

	user1 := *GetUser("transaction1-1", Config{})

	if err = tx.Save(&user1).Error; err != nil {
		t.Fatalf("No error should raise, but got %v", err)
	}

		t.Errorf("no error should happen when find languages with code, but got %v", err)
	} else if len(langs) != 1 {
		t.Errorf("should only find only 1 languages, but got %+v", langs)
	} else if langs[0].Name != "upsert-new" {
		t.Errorf("should update name on conflict, but got name %+v", langs[0].Name)
	}

	lang = Language{Code: "upsert", Name: "Upsert-Newname"}

		t.Errorf("Expected to get Author content %v but got: %v", NewPost.Author.Content, hnPost.Author.Content)
	}

	if hnPost.Author.ContentPtr != nil {
		t.Errorf("Expected to get nil Author contentPtr but got: %v", hnPost.Author.ContentPtr)
	}

	if NewPost.Author.Birthday.UnixMilli() != hnPost.Author.Birthday.UnixMilli() {
		t.Errorf("Expected to get Author birthday with %+v but got: %+v", NewPost.Author.Birthday, hnPost.Author.Birthday)

	}

	var result ScannerValuerStruct

	if err := DB.Find(&result, "id = ?", data.ID).Error; err != nil {
		t.Fatalf("no error should happen when query scanner, valuer struct, but got %v", err)
	}

	if result.ExampleStructPtr.Val != "value2" {
		t.Errorf(`ExampleStructPtr.Val should equal to "value2", but got %v`, result.ExampleStructPtr.Val)
	}

			var filter Filter
			err := xml.Unmarshal([]byte(tc.inputXML), &filter)
			if err != nil {
				t.Fatalf("%d: Expected no error but got %v", i+1, err)
			}
			err = filter.Validate()
			if err != tc.expectedErr {
				t.Fatalf("%d: Expected %v but got %v", i+1, tc.expectedErr, err)
			}
		})
	}
}

func TestObjectSizeFilters(t *testing.T) {
	f1 := Filter{
		set: true,

In this case, the database session would be held until the response is finished being sent, but if you don't use it, then it wouldn't be necessary to hold it.

	if res.Nickname != user.Name {
		t.Errorf("Expected res.Nickname to be %s, but got %s", user.Name, res.Nickname)
	}
	if res.Name != "" {
		t.Errorf("Expected res.Name to be empty, but got %s", res.Name)
	}
	if res.Age != user.Age {
		t.Errorf("Expected res.Age to be %d, but got %d", user.Age, res.Age)
	}
}

func TestPluckWithSelect(t *testing.T) {
	users := []User{

     */
    String getLastaDiSmartDeployMode();

    /**
     * Get the value for the key 'development.here'. <br>
     * The value is, e.g. true <br>
     * comment: Is development environment here? (used for various purpose, you should set false if unknown)
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */

			if !testCase.success && err == nil {
				t.Error("expected failure but success instead")
			}
			if testCase.success && err != nil {
				t.Errorf("expected success but failed instead %s", err)
			}
			if testCase.success && !reflect.DeepEqual(testCase.expectedPatterns, gotPatterns) {
				t.Errorf("expected patterns %s but got %s", testCase.expectedPatterns, gotPatterns)
			}
		})
	}

That's why in this example we have to declare it in the `response_model` parameter.

...but continue reading below to see how to overcome that.

## Return Type and Data Filtering { #return-type-and-data-filtering }

Let's continue from the previous example. We wanted to **annotate the function with one type**, but we wanted to be able to return from the function something that actually includes **more data**.