Kotlin Springboot -- Part 19 Rest と Domain の UT を作る

    @Test
    fun `指定した年齢未満のPersonsを取得する`() {
        MockKAnnotations.init(this)
        val allPersons = mockk<Persons>()
        every { port.getAllPersons() } returns allPersons
        val age = mockk<Age>()
        val expected = mockk<Persons>()
        every { allPersons.filterByLessThan(age) } returns expected
        target.getPersonsLessThanByAge(age) shouldBeEqualTo expected
    }

data class Persons(val list: List<Person>) {
  fun filterByLessThan(age: Age): Persons {
    return Persons(this.list.filter { it.isLessThan(age) })
  }
}

data class Person(val name: Name, val age: Age) {
  fun isLessThan(age: Age): Boolean {
    return this.age.isLessThan(age)
  }
}

data class Name(val value: String)

data class Age(val value: Int) {
  fun isLessThan(other: Age): Boolean {
    return this.value < other.value
  }
}

    testImplementation("org.amshove.kluent:kluent:1.68")
    testImplementation("io.mockk:mockk:1.13.2")

    @Test
    fun `受け取ったAge未満のPersonsを返す`() {
        val target = Persons(listOf(
            Person(Name("Taro"),Age(10)),
            Person(Name("Jiro"),Age(7)),
            Person(Name("Saburo"),Age(5)),
        ))
        val actual = target.filterByLessThan(Age(7))
        val expected = Persons(listOf(
            Person(Name("Saburo"),Age(5)),
        ))
        actual shouldBeEqualTo expected
    }

internal class PersonResourceKtTest {

    @Test
    fun `PersonsをPersonJsonのリストに変換する`() {
        val target = Persons(listOf(
            Person(Name("Taro"),Age(10)),
            Person(Name("Jiro"),Age(7)),
        ))
        val actual = target.toJson()
        val expected = PersonsJson(
            listOf(
                PersonJson("Taro", 10),
                PersonJson("Jiro", 7),
            )
        )
        actual shouldBeEqualTo expected
    }
}