update AccountController with balance

.editorconfig

@@ -9,10 +9,10 @@ insert_final_newline = true
 max_line_length = 120
 tab_width = 4
 
-[*.{json,md,txt,xml,yaml,yml}]
+[*.{http,json,md,txt,xml,yaml,yml}]
 max_line_length = 1024
 
-[*.{json,xml,yaml,yml}]
+[*.{http,json,xml,yaml,yml}]
 indent_size = 2
 tab_width = 2
 

http/account.http

@@ -6,3 +6,6 @@ Content-Type: application/json
     "name": "account name",
     "amount": -1.11
 }
+
+### Create Account
+GET {{url}}/balance/account-00000000-0000-0000-0000-000000000000

src/main/kotlin/ltd/lulz/controller/AccountController.kt

@@ -1,18 +1,26 @@
 package ltd.lulz.controller
 
+import io.github.oshai.kotlinlogging.KotlinLogging
 import jakarta.validation.Valid
+import java.util.UUID
 import ltd.lulz.model.Account
 import ltd.lulz.service.AccountService
 import ltd.lulz.util.toEntity
 import ltd.lulz.util.toResponse
 import org.springframework.http.HttpStatus.CREATED
+import org.springframework.http.HttpStatus.NOT_FOUND
 import org.springframework.validation.annotation.Validated
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.PostMapping
 import org.springframework.web.bind.annotation.RequestBody
 import org.springframework.web.bind.annotation.ResponseStatus
 import org.springframework.web.bind.annotation.RestController
+import org.springframework.web.server.ResponseStatusException
 import reactor.core.publisher.Mono
 
+private val log = KotlinLogging.logger {}
+
 @RestController
 @Validated
 class AccountController(
@@ -25,4 +33,12 @@ class AccountController(
         @Valid @RequestBody request: Account.Request,
     ): Mono<Account.Response> = accountService.create(request.toEntity())
         .map { it.toResponse() }
+
+    @GetMapping("/balance/account-{account}")
+    fun balance(
+        @PathVariable account: UUID,
+    ): Mono<Account.Response> = accountService.getById(account)
+        .map { it.toResponse() }
+        .switchIfEmpty(Mono.error(ResponseStatusException(NOT_FOUND)))
+        .doOnError { log.debug { "account $account not found for balance" } }
 }

src/test/kotlin/ltd/lulz/controller/AccountControllerTest.kt

@@ -8,12 +8,13 @@ import ltd.lulz.model.Account
 import ltd.lulz.model.AccountEntity
 import ltd.lulz.service.AccountService
 import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Nested
 import org.junit.jupiter.api.Test
 import org.springframework.http.MediaType.APPLICATION_JSON
 import org.springframework.test.web.reactive.server.WebTestClient
 import reactor.core.publisher.Mono
 
-@Suppress("MayBeConstant")
+@Suppress("MayBeConstant", "ReactiveStreamsUnusedPublisher")
 class AccountControllerTest {
 
     companion object {
@@ -30,6 +31,9 @@ class AccountControllerTest {
         webTestClient = WebTestClient.bindToController(AccountController(accountService)).build()
     }
 
+    @Nested
+    inner class CreateAccount {
+
         @Test
         fun `create account success`() {
             // given
@@ -86,3 +90,42 @@ class AccountControllerTest {
             result.expectStatus().isBadRequest
         }
     }
+
+    @Nested
+    inner class AccountBalance {
+
+        @Test
+        fun `account balance success`() {
+            // given
+            every { accountService.getById(any()) } returns Mono.just(
+                AccountEntity(id = uuid, name = name, amount = amount),
+            )
+
+            // when
+            val result = webTestClient.get()
+                .uri("/balance/account-$uuid")
+                .exchange()
+
+            // then
+            result.expectStatus().isOk
+                .expectBody()
+                .jsonPath("$.id").isEqualTo(uuid.toString())
+                .jsonPath("$.name").isEqualTo(name)
+                .jsonPath("$.amount").isEqualTo(amount.toString())
+        }
+
+        @Test
+        fun `account balance fail`() {
+            // given
+            every { accountService.getById(any()) } returns Mono.empty()
+
+            // when
+            val result = webTestClient.get()
+                .uri("/balance/account-$uuid")
+                .exchange()
+
+            // then
+            result.expectStatus().isNotFound
+        }
+    }
+}