test: ReadWorkbookUseCase 단위 테스트 추가

api/src/test/kotlin/com/few/api/domain/workbook/usecase/ReadWorkbookUseCaseTest.kt

@@ -0,0 +1,83 @@
+package com.few.api.domain.workbook.usecase
+
+import com.few.api.domain.workbook.service.WorkbookArticleService
+import com.few.api.domain.workbook.service.WorkbookMemberService
+import com.few.api.domain.workbook.service.dto.WorkBookArticleOutDto
+import com.few.api.domain.workbook.service.dto.WriterOutDto
+import com.few.api.domain.workbook.usecase.dto.ReadWorkbookUseCaseIn
+import com.few.api.repo.dao.workbook.WorkbookDao
+import com.few.api.repo.dao.workbook.record.SelectWorkBookRecord
+import io.kotest.assertions.throwables.shouldThrow
+import io.kotest.core.spec.style.BehaviorSpec
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+
+import java.net.URL
+import java.time.LocalDateTime
+
+class ReadWorkbookUseCaseTest : BehaviorSpec({
+    lateinit var workbookDao: WorkbookDao
+    lateinit var workbookArticleService: WorkbookArticleService
+    lateinit var workbookMemberService: WorkbookMemberService
+    lateinit var useCase: ReadWorkbookUseCase
+    val useCaseIn = ReadWorkbookUseCaseIn(workbookId = 1L)
+
+    given("워크북 조회 요청이 온 상황에서") {
+        beforeContainer {
+            workbookDao = mockk<WorkbookDao>()
+            workbookArticleService = mockk<WorkbookArticleService>()
+            workbookMemberService = mockk<WorkbookMemberService>()
+            useCase = ReadWorkbookUseCase(workbookDao, workbookArticleService, workbookMemberService)
+        }
+
+        `when`("워크북과 작가가 존재할 경우") {
+            every { workbookDao.selectWorkBook(any()) } returns SelectWorkBookRecord(
+                id = 1L,
+                title = "workbook title",
+                mainImageUrl = URL("https://jh-labs.tistory.com/"),
+                category = (10).toByte(),
+                description = "workbook description",
+                createdAt = LocalDateTime.now()
+            )
+            every { workbookArticleService.browseWorkbookArticles(any()) } returns listOf(
+                WorkBookArticleOutDto(
+                    articleId = 1L,
+                    writerId = 1L,
+                    mainImageURL = URL("https://jh-labs.tistory.com/"),
+                    title = "article title",
+                    category = (10).toByte(),
+                    content = "article description",
+                    createdAt = LocalDateTime.now()
+                )
+            )
+            every { workbookMemberService.browseWriterRecords(any()) } returns listOf(
+                WriterOutDto(
+                    writerId = 1L,
+                    name = "hunca",
+                    url = URL("https://jh-labs.tistory.com/")
+                )
+            )
+
+            then("워크북 정상 조회된다") {
+                useCase.execute(useCaseIn)
+
+                verify(exactly = 1) { workbookDao.selectWorkBook(any()) }
+                verify(exactly = 1) { workbookArticleService.browseWorkbookArticles(any()) }
+                verify(exactly = 1) { workbookMemberService.browseWriterRecords(any()) }
+            }
+        }
+
+        `when`("워크북이 존재하지 않을 경우") {
+            every { workbookDao.selectWorkBook(any()) } returns null
+
+            then("예외가 발생한다") {
+                shouldThrow<Exception> { useCase.execute(useCaseIn) }
+
+                verify(exactly = 1) { workbookDao.selectWorkBook(any()) }
+                verify(exactly = 0) { workbookArticleService.browseWorkbookArticles(any()) }
+                verify(exactly = 0) { workbookMemberService.browseWriterRecords(any()) }
+            }
+        }
+    }
+})