roomescape-refactored/src/test/kotlin/roomescape/theme/web/MostReservedThemeApiTest.kt

package roomescape.theme.web

import io.kotest.core.spec.style.FunSpec
import io.restassured.module.kotlin.extensions.Given
import io.restassured.module.kotlin.extensions.Then
import io.restassured.module.kotlin.extensions.When
import jakarta.persistence.EntityManager
import org.hamcrest.Matchers.equalTo
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.test.web.server.LocalServerPort
import org.springframework.transaction.support.TransactionTemplate
import roomescape.theme.util.TestThemeDataHelper
import roomescape.util.CleanerMode
import roomescape.util.DatabaseCleanerExtension
import java.time.LocalDate
import kotlin.random.Random

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class MostReservedThemeApiTest(
    @LocalServerPort val port: Int,
    val transactionTemplate: TransactionTemplate,
    val entityManager: EntityManager,
) : FunSpec({ extension(DatabaseCleanerExtension(mode = CleanerMode.AFTER_SPEC)) }) {

    val helper = TestThemeDataHelper(entityManager, transactionTemplate)

    init {
        beforeSpec {
            transactionTemplate.executeWithoutResult {
                // 7일 전 ~ 1일 전 예약된 테마 10개 생성
                for (i in 1..10) {
                    helper.createThemeWithReservations(
                        name = "테마$i",
                        reservedCount = 1,
                        date = LocalDate.now().minusDays(Random.nextLong(1, 7))
                    )
                }

                // 8일 전 예약된 테마 1개 생성
                helper.createThemeWithReservations(
                    name = "테마11",
                    reservedCount = 1,
                    date = LocalDate.now().minusDays(8)
                )

                // 당일 예약된 테마 1개 생성
                helper.createThemeWithReservations(
                    name = "테마12",
                    reservedCount = 1,
                    date = LocalDate.now()
                )
            }
        }

        context("GET /themes/most-reserved-last-week") {
            val endpoint = "/themes/most-reserved-last-week"

            test("count 파라미터가 없으면 10개를 반환한다") {
                Given {
                    port(port)
                } When {
                    get(endpoint)
                } Then {
                    statusCode(200)
                    body("data.themes.size()", equalTo(10))
                }
            }

            test("조회된 테마가 count보다 적으면 조회된 만큼 반환한다") {
                val count = 15
                Given {
                    port(port)
                    param("count", count)
                } When {
                    get(endpoint)
                } Then {
                    statusCode(200)
                    body("data.themes.size()", equalTo(10))
                }
            }

            test("조회된 테마가 count보다 많으면 count만큼 반환한다") {
                val count = 5
                Given {
                    port(port)
                    param("count", count)
                } When {
                    get(endpoint)
                } Then {
                    statusCode(200)
                    body("data.themes.size()", equalTo(count))
                }
            }

            test("지난 7일 동안의 예약만 집계한다") {
                // beforeSpec 에서 정의한 테스트 데이터 중, 8일 전 / 당일 예약 테마는 제외되어야 한다.
                val count = 12
                Given {
                    port(port)
                    param("count", count)
                } When {
                    get(endpoint)
                } Then {
                    statusCode(200)
                    body("data.themes.size()", equalTo(10))
                }
            }
        }
    }
}