add getNodeFromDevice to NodeService

src/main/kotlin/ltd/hlaeja/service/NodeService.kt

@@ -1,9 +1,12 @@
 package ltd.hlaeja.service
 
+import java.util.UUID
 import ltd.hlaeja.entity.NodeEntity
 import ltd.hlaeja.repository.NodeRepository
 import mu.KotlinLogging
+import org.springframework.http.HttpStatus.NOT_FOUND
 import org.springframework.stereotype.Service
+import org.springframework.web.server.ResponseStatusException
 
 private val log = KotlinLogging.logger {}
 
@@ -16,4 +19,9 @@ class NodeService(
         node: NodeEntity,
     ): NodeEntity = nodeRepository.save(node)
         .also { log.debug { "Added node ${it.id}" } }
+
+    suspend fun getNodeFromDevice(
+        device: UUID,
+    ): NodeEntity = nodeRepository.findByDevice(device)
+        ?: throw ResponseStatusException(NOT_FOUND)
 }

src/test/kotlin/ltd/hlaeja/service/NodeServiceTest.kt

@@ -3,15 +3,19 @@ package ltd.hlaeja.service
 import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.mockk
+import java.util.UUID
 import kotlinx.coroutines.test.runTest
 import ltd.hlaeja.entity.NodeEntity
 import ltd.hlaeja.repository.NodeRepository
+import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import org.springframework.web.server.ResponseStatusException
 
 class NodeServiceTest {
 
-    val repository: NodeRepository = mockk()
+    val repository: NodeRepository = mockk(relaxed = true)
     lateinit var service: NodeService
 
     @BeforeEach
@@ -32,4 +36,35 @@ class NodeServiceTest {
         // then
         coVerify(exactly = 1) { repository.save(any()) }
     }
+
+    @Test
+    fun `get type - success`() = runTest {
+        // given
+        val device = UUID.fromString("00000000-0000-0000-0000-000000000001")
+        val entity: NodeEntity = mockk()
+
+        coEvery { repository.findByDevice(any()) } returns entity
+
+        // when
+        service.getNodeFromDevice(device)
+
+        // then
+        coVerify(exactly = 1) { repository.findByDevice(any()) }
+    }
+
+    @Test
+    fun `get type - fail not found`() = runTest {
+        // given
+        val device = UUID.fromString("00000000-0000-0000-0000-000000000001")
+
+        coEvery { repository.findByDevice(any()) } returns null
+
+        // when
+        val exception = assertThrows<ResponseStatusException> {
+            service.getNodeFromDevice(device)
+        }
+
+        // then
+        assertThat(exception.message).isEqualTo("404 NOT_FOUND")
+    }
 }