ChatGPT_AccountAPI_Answer04.md

Certainly! Here is an example of unit tests for the API using Kotest:

import io.kotest.core.spec.style.StringSpec
import io.kotest.matchers.shouldBe
import io.kotest.spring.SpringAutowireConstructorExtension
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.http.MediaType
import org.springframework.test.web.servlet.MockMvc
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*
import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status

@SpringBootTest
@AutoConfigureMockMvc
@SpringAutowireConstructorExtension
class AccountControllerTest(@Autowired val mockMvc: MockMvc) : StringSpec() {

    init {
        "should create an account" {
            val accountJson = """{"name":"Test"}"""
            mockMvc.perform(post("/accounts")
                    .contentType(MediaType.APPLICATION_JSON)
                    .content(accountJson))
                    .andExpect(status().isCreated)
        }

        "should return the created account" {
            val accountJson = """{"name":"Test"}"""
            val result = mockMvc.perform(post("/accounts")
                    .contentType(MediaType.APPLICATION_JSON)
                    .content(accountJson))
                    .andReturn()

            val responseJson = result.response.contentAsString
            val id = responseJson.substringAfter(":").substringBefore(",").toLong()
            val expectedJson = """{"id":$id,"name":"Test"}"""

            mockMvc.perform(get("/accounts/$id"))
                    .andExpect(status().isOk)
                    .andExpect(result.response.contentAsString shouldBe expectedJson)
        }

        "should update an account" {
            val accountJson = """{"name":"Test"}"""
            val createResult = mockMvc.perform(post("/accounts")
                    .contentType(MediaType.APPLICATION_JSON)
                    .content(accountJson))
                    .andReturn()
            val id = createResult.response.contentAsString.substringAfter(":").substringBefore(",").toLong()

            val updateJson = """{"name":"Updated"}"""
            mockMvc.perform(put("/accounts/$id")
                    .contentType(MediaType.APPLICATION_JSON)
                    .content(updateJson))
                    .andExpect(status().isOk)

            val expectedJson = """{"id":$id,"name":"Updated"}"""
            mockMvc.perform(get("/accounts/$id"))
                    .andExpect(status().isOk)
                    .andExpect(result.response.contentAsString shouldBe expectedJson)
        }

        "should delete an account" {