Sure, here are some examples of JUnit test cases for the Spring controller and service methods mentioned above.

WorkspaceControllerTest.java:
```java
package com.whatfix.wfl.collab.controller;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;

import com.whatfix.wfl.collab.exception.ResourceNotFoundException;
import com.whatfix.wfl.collab.model.Workspace;
import com.whatfix.wfl.collab.service.WorkspaceService;

public class WorkspaceControllerTest {

    @Test
    public void testGetPublicWorkspacesByDomain() {
        WorkspaceService workspaceService = mock(WorkspaceService.class);
        WorkspaceController workspaceController = new WorkspaceController();
        workspaceController.setWorkspaceService(workspaceService);

        String domain = "example.com";
        List<Workspace> publicWorkspaces = new ArrayList<>();
        publicWorkspaces.add(new Workspace());
        when(workspaceService.getPublicWorkspacesByDomain(domain)).thenReturn(publicWorkspaces);

        ResponseEntity<List<Workspace>> response = workspaceController.getPublicWorkspacesByDomain(domain);

        Assertions.assertEquals(HttpStatus.OK, response.getStatusCode());
        Assertions.assertEquals(publicWorkspaces, response.getBody());
    }

    @Test
    public void testGetPublicWorkspacesByDomainNoWorkspacesFound() {
        WorkspaceService workspaceService = mock(WorkspaceService.class);
        WorkspaceController workspaceController = new WorkspaceController();
        workspaceController.setWorkspaceService(workspaceService);

        String domain = "example.com";
        when(workspaceService.getPublicWorkspacesByDomain(domain)).thenThrow(new ResourceNotFoundException());

        Assertions.assertThrows(ResourceNotFoundException.class, () -> {
            workspaceController.getPublicWorkspacesByDomain(domain);
        });
    }
}
```
WorkspaceServiceTest.java:
```java
package com.whatfix.wfl.collab.service;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.whatfix.wfl.collab.exception.ResourceNotFoundException;
import com.whatfix.wfl.collab.model.Workspace;
import com.whatfix.wfl.collab.repository.WorkspaceRepository;

public class WorkspaceServiceTest {

    @Test
    public void testGetPublicWorkspacesByDomain() {
        WorkspaceRepository workspaceRepository = mock(WorkspaceRepository.class);
        WorkspaceService workspaceService = new WorkspaceService();
        workspaceService.setWorkspaceRepository(workspaceRepository);

        String domain = "example.com";
        List<Workspace> publicWorkspaces = new ArrayList<>();
        publicWorkspaces.add(new Workspace());
        when(workspaceRepository.findByDomainAndIsPrivate(domain, false)).thenReturn(publicWorkspaces);

        List<Workspace> response = workspaceService.getPublicWorkspacesByDomain(domain);

        Assertions.assertEquals(publicWorkspaces, response);
    }

    @Test
    public void testGetPublicWorkspacesByDomainNoWorkspacesFound() {
        WorkspaceRepository workspaceRepository = mock(WorkspaceRepository.class);
        WorkspaceService workspaceService = new WorkspaceService();
        workspaceService.setWorkspaceRepository(workspaceRepository);

        String domain = "example.com";
        when(workspaceRepository.findByDomainAndIsPrivate(domain, false)).thenReturn(new ArrayList<Workspace>());

        Assertions.assertThrows(ResourceNotFoundException.class, () -> {
            workspaceService.getPublicWorkspacesByDomain(domain);
        });
    }
}
```
In these test cases, we are using Mockito to mock the dependencies of our controller and service classes, i.e., WorkspaceService and WorkspaceRepository. We are then calling the methods on these mocked objects with some predefined input values and expected output values, and checking if the actual output values match the expected ones. We are
위에서 언급한 Spring 컨트롤러 및 서비스 메서드에 대한 JUnit 테스트 케이스의 몇 가지 예는 다음과 같습니다.WorkspaceControllerTest.java:```javapackage com.whatfix.wfl.collab.controller;정적 org.mockito.Mockito.mock;정적 org.mockito.Mockito.when를 임포트합니다;java.util.ArrayList를 임포트합니다;java.util.List;java.util.UUID를 임포트합니다;org.junit.jupiter.api.Assertions를 임포트합니다;import org.junit.jupiter.api.Test;org.springframework.http.HttpStatus를 가져옵니다;org.springframework.http.ResponseEntity를 가져옵니다;com.whatfix.wfl.collab.exception.ResourceNotFoundException을 가져옵니다;com.whatfix.wfl.collab.model.Workspace를 가져옵니다;com.whatfix.wfl.collab.service.WorkspaceService를 임포트합니다;public class WorkspaceControllerTest {    @Test    public void testGetPublicWorkspacesByDomain() {        WorkspaceService workspaceService = mock(WorkspaceService.class);        워크스페이스 컨트롤러 workspaceController = 새로운 워크스페이스 컨트롤러();        workspaceController.setWorkspaceService(workspaceService);        String domain = "example.com";        List<작업공간> publicWorkspaces = 새로운 ArrayList<>();        publicWorkspaces.add(new Workspace());        when(workspaceService.getPublicWorkspacesByDomain(domain)).thenReturn(publicWorkspaces);        ResponseEntity<List<Workspace>> response = workspaceController.getPublicWorkspacesByDomain(domain);        Assertions.assertEquals(HttpStatus.OK, response.getStatusCode());        Assertions.assertEquals(publicWorkspaces, response.getBody());    }    @Test    public void testGetPublicWorkspacesByDomainNoWorkspacesFound() {        WorkspaceService workspaceService = mock(WorkspaceService.class);        워크스페이스 컨트롤러 workspaceController = 새로운 워크스페이스 컨트롤러();        workspaceController.setWorkspaceService(workspaceService);        문자열 도메인 = "example.com";        when(workspaceService.getPublicWorkspacesByDomain(domain)).thenThrow(new ResourceNotFoundException());        Assertions.assertThrows(ResourceNotFoundException.class, () -> {            workspaceController.getPublicWorkspacesByDomain(domain);        });    }}```WorkspaceServiceTest.java:```javapackage com.whatfix.wfl.collab.service;import static org.mockito.Mockito.mock;정적 org.mockito.Mockito.when를 임포트합니다;java.util.ArrayList를 임포트합니다;java.util.List;java.util.UUID를 임포트합니다;org.junit.jupiter.api.Assertions를 임포트합니다;org.junit.jupiter.api.Test;com.whatfix.wfl.collab.exception.ResourceNotFoundException을 가져옵니다;com.whatfix.wfl.collab.model.Workspace를 가져옵니다;com.whatfix.wfl.collab.repository.WorkspaceRepository를 임포트합니다;public class WorkspaceServiceTest {    @Test    public void testGetPublicWorkspacesByDomain() {        WorkspaceRepository workspaceRepository = mock(WorkspaceRepository.class);        워크스페이스 서비스 workspaceService = 새로운 워크스페이스 서비스();        workspaceService.setWorkspaceRepository(workspaceRepository);        문자열 도메인 = "example.com";        List<작업공간> publicWorkspaces = 새로운 ArrayList<>();        publicWorkspaces.add(new Workspace());        when(workspaceRepository.findByDomainAndIsPrivate(domain, false)).thenReturn(publicWorkspaces);        List<작업 공간> 응답 = workspaceService.getPublicWorkspacesByDomain(domain);        Assertions.assertEquals(publicWorkspaces, response);    }    @Test    public void testGetPublicWorkspacesByDomainNoWorkspacesFound() {        워크스페이스 리포지토리 workspaceRepository = mock(WorkspaceRepository.class);        워크스페이스서비스 workspaceService = 새로운 워크스페이스서비스();        workspaceService.setWorkspaceRepository(workspaceRepository);        문자열 도메인 = "example.com";        when(workspaceRepository.findByDomainAndIsPrivate(domain, false)).thenReturn(new ArrayList<Workspace>());        Assertions.assertThrows(ResourceNotFoundException.class, () -> {            workspaceService.getPublicWorkspacesByDomain(domain);        });    }}```이 테스트 사례에서는 Mockito를 사용하여 컨트롤러와 서비스 클래스, 즉 WorkspaceService와 WorkspaceRepository의 종속성을 모의하고 있습니다. 그런 다음 미리 정의된 입력 값과 예상 출력 값으로 이러한 모의 객체의 메서드를 호출하고 실제 출력 값이 예상 출력 값과 일치하는지 확인합니다. 우리는