testing-modules/spring-testing/src/test/java/com/baeldung/reflectiontestutils/ReflectionTestUtilsUnitTest.java - master - NikolayIvkin/tutorials1

testing-modules/spring-testing/src/test/java/com/baeldung/reflectiontestutils/ReflectionTestUtilsUnitTest.java

46 строк2 KB

Krzysztof Woyke

BAEL-19988: Migrate spring-testing module to the com.baeldung package

19 дек 2019, 13:02

19 дек 2019, 13:02f84ff44

package com.baeldung.reflectiontestutils;

import static org.junit.Assert.*;
import static org.mockito.Mockito.mock;

import com.baeldung.reflectiontestutils.repository.EmployeeService;
import com.baeldung.reflectiontestutils.repository.HRService;
import com.baeldung.reflectiontestutils.repository.Employee;
import org.junit.Test;
import org.springframework.test.util.ReflectionTestUtils;

import static org.mockito.Mockito.when;

public class ReflectionTestUtilsUnitTest {

    @Test
    public void whenNonPublicField_thenReflectionTestUtilsSetField() {
        Employee employee = new Employee();
        ReflectionTestUtils.setField(employee, "id", 1);
        assertTrue(employee.getId().equals(1));

    }

    @Test
    public void whenNonPublicMethod_thenReflectionTestUtilsInvokeMethod() {
        Employee employee = new Employee();
        ReflectionTestUtils.setField(employee, "id", 1);
        employee.setName("Smith, John");
        assertTrue(ReflectionTestUtils.invokeMethod(employee, "employeeToString").equals("id: 1; name: Smith, John"));
    }

    @Test
    public void whenInjectingMockOfDependency_thenReflectionTestUtilsSetField() {
        Employee employee = new Employee();
        ReflectionTestUtils.setField(employee, "id", 1);
        employee.setName("Smith, John");

        HRService hrService = mock(HRService.class);
        when(hrService.getEmployeeStatus(employee.getId())).thenReturn("Active");
        EmployeeService employeeService = new EmployeeService();

        // Inject mock into the private field
        ReflectionTestUtils.setField(employeeService, "hrService", hrService);
        assertEquals("Employee " + employee.getId() + " status: Active", employeeService.findEmployeeStatus(employee.getId()));
    }
}