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How to use Optional.shouldBePresent method of io.kotest.matchers.optional.matchers class

Best Kotest code snippet using io.kotest.matchers.optional.matchers.Optional.shouldBePresent

PostServiceTest.kt

Source:PostServiceTest.kt

1package com.github.njuro.jard.post2import com.github.njuro.jard.TestDataRepository3import com.github.njuro.jard.WithContainerDatabase4import com.github.njuro.jard.board5import com.github.njuro.jard.board.Board6import com.github.njuro.jard.post7import com.github.njuro.jard.thread8import com.github.njuro.jard.thread.Thread9import io.kotest.assertions.throwables.shouldThrow10import io.kotest.matchers.collections.shouldContainExactly11import io.kotest.matchers.nulls.shouldNotBeNull12import io.kotest.matchers.optional.shouldBePresent13import io.kotest.matchers.optional.shouldNotBePresent14import io.kotest.matchers.should15import io.kotest.matchers.shouldBe16import io.kotest.matchers.string.shouldContain17import org.junit.jupiter.api.BeforeEach18import org.junit.jupiter.api.Test19import org.springframework.beans.factory.annotation.Autowired20import org.springframework.boot.test.context.SpringBootTest21import org.springframework.transaction.annotation.Transactional22@SpringBootTest23@WithContainerDatabase24@Transactional25internal class PostServiceTest {26    @Autowired27    private lateinit var postService: PostService28    @Autowired29    private lateinit var postRepository: PostRepository30    @Autowired31    private lateinit var db: TestDataRepository32    private lateinit var board: Board33    private lateinit var thread: Thread34    @BeforeEach35    fun setUp() {36        board = db.insert(board(label = "r"))37        thread = db.insert(thread(board))38    }39    @Test40    fun `create new post`() {41        val post = post(thread, postNumber = 0L, body = "Test post\n")42        postService.savePost(post).should {43            it.id.shouldNotBeNull()44            it.postNumber shouldBe 1L45            it.body.shouldContain("<br/>")46        }47    }48    @Test49    fun `resolve post`() {50        val post = db.insert(post(thread, postNumber = 2L))51        postService.resolvePost(board.label, post.postNumber).postNumber shouldBe post.postNumber52    }53    @Test54    fun `don't resolve non-existing post`() {55        shouldThrow<PostNotFoundException> {56            postService.resolvePost(board.label, 0L)57        }58    }59    @Test60    fun `get latest replies for thread`() {61        (2L..8L).forEach { db.insert(post(thread, postNumber = it)) }62        postService.getLatestRepliesForThread(thread.id, thread.originalPost.id).map(Post::getPostNumber)63            .shouldContainExactly(4L, 5L, 6L, 7L, 8L)64    }65    @Test66    fun `delete single post`() {67        val reply = db.insert(post(thread, postNumber = 2L))68        db.select(reply).shouldBePresent()69        postService.deletePost(reply)70        db.select(reply).shouldNotBePresent()71    }72    @Test73    fun `delete multiple posts`() {74        val replies = (2L..5L).map { db.insert(post(thread, postNumber = it)) }75        postRepository.countByThreadId(thread.id) shouldBe 5L76        postService.deletePosts(replies)77        postRepository.countByThreadId(thread.id) shouldBe 1L78    }79}...

LivreAdapterTest.kt

Source:LivreAdapterTest.kt

1package fr.deroffal.bibliotheque.livre.adapter.repository2import fr.deroffal.bibliotheque.livre.domain.Livre3import io.kotest.matchers.collections.shouldContainExactly4import io.kotest.matchers.collections.shouldHaveSize5import io.kotest.matchers.optional.shouldBePresent6import io.kotest.matchers.shouldBe7import org.junit.jupiter.api.Test8import org.springframework.beans.factory.annotation.Autowired9import org.springframework.boot.test.autoconfigure.orm.jpa.AutoConfigureTestEntityManager10import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager11import org.springframework.boot.test.context.SpringBootTest12import org.springframework.test.context.TestPropertySource13import org.springframework.transaction.annotation.Transactional14import java.util.*15@TestPropertySource(locations = ["classpath:application-repositoryAdapterTest.properties"])16@AutoConfigureTestEntityManager17@SpringBootTest18@Transactional19internal class LivreAdapterTest {20    @Autowired21    private lateinit var livreAdapter: LivreAdapter22    @Autowired23    private lateinit var testEntityManager: TestEntityManager24    @Test25    fun `findById retourne le livre correspondant`() {26        //given:27        val entity = newLivreEntity("Harry Potter", "Fantastique")28        //when:29        val livreOptional = livreAdapter.findById(entity.id)30        //then:31        livreOptional.shouldBePresent()32        val livre = livreOptional.get()33        //and:34        livre.titre shouldBe "Harry Potter"35        livre.genre shouldBe "Fantastique"36    }37    @Test38    fun `findAllByGenre retourne tous les elements d'un genre donne`() {39        //given:40        newLivreEntity("Harry Potter", "Fantastique")41        newLivreEntity("Le Seigneur des Anneaux", "Fantastique")42        newLivreEntity("Dune", "Science-fiction")43        //when:44        val livres = livreAdapter.findAllByGenre("Fantastique")45        //then:46        livres shouldHaveSize 247        livres.map { it.titre }.sorted() shouldContainExactly listOf("Harry Potter", "Le Seigneur des Anneaux")48    }49    @Test50    fun `create retourne le livre cree`() {51        //given:52        val livreACree = Livre(UUID.randomUUID(), "Harry Potter", "Fantastique")53        //when:54        val livre = livreAdapter.create(livreACree)55        //then:56        livre.titre shouldBe "Harry Potter"57        livre.genre shouldBe "Fantastique"58        //and:59        val entity = testEntityManager.find(LivreEntity::class.java, livre.id)60        entity.id shouldBe livre.id61        entity.titre shouldBe "Harry Potter"62        entity.genre shouldBe "Fantastique"63    }64    private fun newLivreEntity(titre: String, genre: String) = testEntityManager.merge(LivreEntity(UUID.randomUUID(), titre, genre))65}...

OptionalMatchersTest.kt

Source:OptionalMatchersTest.kt

1package com.sksamuel.kotest.matchers.optional2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.core.spec.style.ShouldSpec4import io.kotest.matchers.optional.beEmpty5import io.kotest.matchers.optional.bePresent6import io.kotest.matchers.optional.shouldBeEmpty7import io.kotest.matchers.optional.shouldBePresent8import io.kotest.matchers.optional.shouldNotBeEmpty9import io.kotest.matchers.optional.shouldNotBePresent10import io.kotest.matchers.should11import io.kotest.matchers.shouldBe12import io.kotest.matchers.shouldNot13import io.kotest.matchers.throwable.shouldHaveMessage14import java.util.Optional15class OptionalMatchersTest : ShouldSpec({16    context("Empty optional") {17        val optional = Optional.empty<Any>()18        should("Be empty") {19            optional.shouldBeEmpty()20            optional should beEmpty()21        }22        should("Not be present") {23            optional.shouldNotBePresent()24            optional shouldNot bePresent()25        }26        should("Fail to be notEmpty") {27            shouldThrow<AssertionError> { optional.shouldNotBeEmpty() }28            shouldThrow<AssertionError> { optional shouldNot beEmpty() }29        }30        should("Fail to be present") {31            shouldThrow<AssertionError> { optional.shouldBePresent() }32            shouldThrow<AssertionError> { optional should bePresent() }33        }34    }35    context("Present optional") {36        val optional = Optional.of("A")37        should("Be present") {38            optional.shouldBePresent()39            optional should bePresent()40        }41        42        should("Return the present value for usage in more assertions") {43            optional.shouldBePresent() shouldBe "A"44        } 45        should("Allow matchers with present value as a receiver") {46            optional shouldBePresent {47                this shouldBe "A"48            }49        }50        51        should("Allow matchers with present value as parameter") {52            optional shouldBePresent {53                it shouldBe "A"54            }55        }56        57        should("Execute code inside the receiver") {58            shouldThrow<RuntimeException> {59                optional shouldBePresent {60                    throw RuntimeException("Ensuring the block is actually executed")61                }62            } shouldHaveMessage "Ensuring the block is actually executed"63            64            shouldThrow<AssertionError> {65                optional shouldBePresent {66                    this shouldBe "B"67                }68            }69        }70    }71}) ...

UserServiceTest.kt

Source:UserServiceTest.kt

1package com.github.njuro.jard.user2import com.github.njuro.jard.TestDataRepository3import com.github.njuro.jard.WithContainerDatabase4import com.github.njuro.jard.WithMockJardUser5import com.github.njuro.jard.user6import io.kotest.matchers.booleans.shouldBeFalse7import io.kotest.matchers.booleans.shouldBeTrue8import io.kotest.matchers.collections.shouldHaveSize9import io.kotest.matchers.optional.shouldBeEmpty10import io.kotest.matchers.optional.shouldBePresent11import io.kotest.matchers.shouldBe12import org.junit.jupiter.api.Test13import org.springframework.beans.factory.annotation.Autowired14import org.springframework.boot.test.context.SpringBootTest15import org.springframework.transaction.annotation.Transactional16@SpringBootTest17@WithContainerDatabase18@Transactional19internal class UserServiceTest {20    @Autowired21    private lateinit var userService: UserService22    @Autowired23    private lateinit var db: TestDataRepository24    @Test25    fun `save user`() {26        val user = user(username = "Anonymous")27        userService.saveUser(user).username shouldBe user.username28    }29    @Test30    fun `get all users`() {31        repeat(3) { db.insert(user(username = "User $it", email = "user$it@email.com")) }32        userService.allUsers shouldHaveSize 333    }34    @Test35    fun `check that user exists`() {36        val user = db.insert(user(username = "Anonymous"))37        userService.doesUserExists(user.username).shouldBeTrue()38        userService.doesUserExists("other").shouldBeFalse()39    }40    @Test41    @WithMockJardUser(username = "Anonymous")42    fun `get current user`() {43        userService.currentUser.username shouldBe "Anonymous"44    }45    @Test46    @WithMockJardUser(UserAuthority.MANAGE_BOARDS, UserAuthority.MANAGE_USERS)47    fun `check if current user has authority`() {48        userService.hasCurrentUserAuthority(UserAuthority.MANAGE_BOARDS).shouldBeTrue()49        userService.hasCurrentUserAuthority(UserAuthority.MANAGE_USERS).shouldBeTrue()50        userService.hasCurrentUserAuthority(UserAuthority.MANAGE_BANS).shouldBeFalse()51    }52    @Test53    fun `delete user`() {54        val user = db.insert(user(username = "Anonymous"))55        db.select(user).shouldBePresent()56        userService.deleteUser(user)57        db.select(user).shouldBeEmpty()58    }59}...

BoardServiceTest.kt

Source:BoardServiceTest.kt

1package com.github.njuro.jard.board2import com.github.njuro.jard.TestDataRepository3import com.github.njuro.jard.WithContainerDatabase4import com.github.njuro.jard.board5import io.kotest.assertions.throwables.shouldThrow6import io.kotest.matchers.collections.shouldContainInOrder7import io.kotest.matchers.optional.shouldBeEmpty8import io.kotest.matchers.optional.shouldBePresent9import io.kotest.matchers.shouldBe10import io.kotest.matchers.shouldNotBe11import org.junit.jupiter.api.Test12import org.springframework.beans.factory.annotation.Autowired13import org.springframework.boot.test.context.SpringBootTest14import java.time.OffsetDateTime15@SpringBootTest16@WithContainerDatabase17internal class BoardServiceTest {18    @Autowired19    private lateinit var boardService: BoardService20    @Autowired21    private lateinit var db: TestDataRepository22    @Test23    fun `save board`() {24        val board = board("r", postCounter = 0L)25        val created = boardService.saveBoard(board)26        created.id shouldNotBe null27        created.postCounter shouldBe 1L28    }29    @Test30    fun `find all boards sorted by creation date`() {31        val baseDate = OffsetDateTime.now()32        val first = db.insert(board(label = "r", createdAt = baseDate))33        val second = db.insert(board(label = "sp", createdAt = baseDate.plusDays(1)))34        val third = db.insert(board(label = "fit", createdAt = baseDate.minusDays(1)))35        boardService.allBoards.shouldContainInOrder(third, first, second)36    }37    @Test38    fun `resolve board by label`() {39        val board = db.insert(board(label = "r"))40        boardService.resolveBoard(board.label) shouldBe board41    }42    @Test43    fun `don't resolve non-existing board`() {44        shouldThrow<BoardNotFoundException> {45            boardService.resolveBoard("xxx")46        }47    }48    @Test49    fun `register new post`() {50        val board = db.insert(board(label = "r", postCounter = 5L))51        boardService.registerNewPost(board) shouldBe board.postCounter52        db.select(board).shouldBePresent { it.postCounter shouldBe board.postCounter + 1 }53    }54    @Test55    fun `delete board`() {56        val board = db.insert(board(label = "r"))57        boardService.deleteBoard(board)58        db.select(board).shouldBeEmpty()59    }60}...

matchers.kt

Source:matchers.kt

1package io.kotest.matchers.optional2import io.kotest.matchers.Matcher3import io.kotest.matchers.MatcherResult4import io.kotest.matchers.should5import io.kotest.matchers.shouldNot6import java.util.Optional7/**8 * Asserts that a [Optional] is empty9 *10 * ```11 * Optional.empty().shouldBeEmpty() // Assertion passes12 *13 * Optional.of("A").shouldBeEmpty() // Assertion fails14 * ```15 */16fun <T> Optional<T>.shouldBeEmpty() = this should beEmpty()17/**18 * Asserts that a [Optional] is not empty19 *20 * ```21 * Optional.of("A").shouldNotBeEmpty() // Assertion passes22 *23 * Optional.empty().shouldNotBeEmpty() // Assertion fails24 * ```25 */26fun <T> Optional<T>.shouldNotBeEmpty() = this shouldNot beEmpty()27/**28 * Matcher to verify whether an [Optional] is empty or not29 */30fun <T> beEmpty() = object : Matcher<Optional<T>> {31    override fun test(value: Optional<T>) = MatcherResult(32       !value.isPresent,33       { "Expected optional to be empty, but instead was ${value.get()}" },34       { "Expected optional to not be empty, but was" }35    )36}37/**38 * Verifies if this [Optional] is present then execute [block] with it's value39 *40 * ```41 * val optional = Optional.of("A")42 *43 * optional shouldBePresent {44 *     it shouldBe "A"45 * }46 *47 * ```48 */49infix fun <T> Optional<T>.shouldBePresent(block: T.(value: T) -> Unit): T {50    shouldBePresent()51    get().block(get())52    return get()53}54/**55 * Verifies if this [Optional] is present56 *57 * ```58 * val optional = Optional.of("A")59 *60 * optional.shouldBePresent()61 *62 * ```63 *64 * Further assertions can be made using the returned value65 *66 * ```67 * val optional = Optional.of("A")68 *69 * val present = optional.shouldBePresent()70 * present shouldBe "A"71 * ```72 *73 */74fun <T> Optional<T>.shouldBePresent(): T {75    this should bePresent()76    return get()77}78/**79 * Verifies t hat this Optional contains no value80 */81fun <T> Optional<T>.shouldNotBePresent() = this shouldNot bePresent()82/**83 * Matcher to verify whether a matcher contains a value or not84 */85fun <T> bePresent() = object : Matcher<Optional<T>> {86    override fun test(value: Optional<T>) = MatcherResult(87       value.isPresent,88       { "Expected optional to be present, but was empty instead" },89       { "Expected optional to not be present, but was ${value.get()}" }90    )91}...

BoardRepositoryTest.kt

Source:BoardRepositoryTest.kt

1package com.github.njuro.jard.board2import com.github.njuro.jard.WithContainerDatabase3import com.github.njuro.jard.board4import io.kotest.matchers.optional.shouldBeEmpty5import io.kotest.matchers.optional.shouldBePresent6import io.kotest.matchers.shouldBe7import org.junit.jupiter.api.Test8import org.springframework.beans.factory.annotation.Autowired9import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest10@DataJpaTest11@WithContainerDatabase12internal class BoardRepositoryTest {13    @Autowired14    private lateinit var boardRepository: BoardRepository15    @Test16    fun `find board by label`() {17        val expectedBoard = board(label = "fit")18        boardRepository.save(expectedBoard)19        val actualBoard = boardRepository.findByLabel(expectedBoard.label)20        actualBoard.shouldBePresent { it.label shouldBe expectedBoard.label }21    }22    @Test23    fun `don't find non-existing board by label`() {24        boardRepository.findByLabel("xxx").shouldBeEmpty()25    }26    @Test27    fun `retrieve post counter of board`() {28        val board = board(label = "r", postCounter = 10)29        boardRepository.save(board)30        boardRepository.getPostCounter(board.label) shouldBe board.postCounter31    }32    @Test33    fun `increase post counter of board`() {34        val board = board(label = "sp", postCounter = 15)35        boardRepository.save(board)36        boardRepository.increasePostNumber(board.label)37        boardRepository.findByLabel(board.label).shouldBePresent { it.postCounter shouldBe board.postCounter + 1 }38    }39}...

KoinModuleFactoryTest.kt

Source:KoinModuleFactoryTest.kt

1package dev.madetobuild.typedconfig.koin2import dev.madetobuild.typedconfig.runtime.source.MapSource3import dev.madetobuild.typedconfig.test.KoinConfig4import io.kotest.matchers.optional.shouldBePresent5import io.kotest.matchers.optional.shouldNotBePresent6import io.kotest.matchers.shouldBe7import org.junit.jupiter.api.Test8import org.junit.jupiter.api.extension.RegisterExtension9import org.koin.core.qualifier.named10import org.koin.test.KoinTest11import org.koin.test.inject12import org.koin.test.junit5.KoinTestExtension13import java.util.*14class KoinModuleFactoryTest : KoinTest {15    private val key by inject<Int>(named("integer"))16    private val nestedKey by inject<String>(named("nested.foo"))17    private val optionalKey by inject<Optional<Int>>(named("optionalKey"))18    private val optionalKey2 by inject<Optional<Int>>(named("optionalKey2"))19    @JvmField20    @RegisterExtension21    val koinTestExtension = KoinTestExtension.create {22        val input = mapOf(23            "integer" to 42,24            "nested.foo" to "bar",25            "optionalKey" to 1,26            // "optionalKey2" intentionally omitted27        )28        modules(KoinConfig(MapSource(input)).asKoinModule())29    }30    @Test31    fun topLevelKey() {32        key shouldBe 4233    }34    @Test35    fun nestedKey() {36        nestedKey shouldBe "bar"37    }38    @Test39    fun optionalAndPresent() {40        optionalKey shouldBePresent {41            it shouldBe 142        }43    }44    @Test45    fun optionalButAbsent() {46        optionalKey2.shouldNotBePresent()47    }48}...

Optional.shouldBePresent

Using AI Code Generation

1import io.kotest.matchers.optional.shouldBePresent2import io.kotest.matchers.optional.shouldBeAbsent3import io.kotest.matchers.optional.shouldBeEmpty4import io.kotest.matchers.optional.shouldBePresentAnd5import io.kotest.matchers.optional.shouldBePresentOr6import io.kotest.matchers.optional.shouldBePresentOrElse7import io.kotest.matchers.optional.shouldBePresentWith8import io.kotest.matchers.optional.shouldBePresentThat9import io.kotest.matchers.optional.shouldBePresentIf10import io.kotest.matchers.optional.shouldBePresentUnless11import io.kotest.matchers.optional.shouldBePresentWhen12import io.kotest.matchers.optional.shouldBePresentUnlessNull13import io.kotest.matchers.optional.shouldBePresentWhenNotNull14import io.kotest.matchers.optional.shouldBePresentIfNot15import io.kotest.match

Optional.shouldBePresent

Using AI Code Generation

1val optional : Optional < String > = Optional . empty ()2optional . shouldBePresent ()3val optional : Optional < String > = Optional . empty ()4optional . shouldBeAbsent ()5val optional : Optional < String > = Optional . of ( "Hello" )6optional . shouldBePresentAnd { it == "Hello" }7val optional : Optional < String > = Optional . empty ()8optional . shouldBePresentAnd { it == "Hello" }9val optional : Optional < String > = Optional . of ( "Hello" )10optional . shouldBePresentAnd { it == "Hello" }11val optional : Optional < String > = Optional . of ( "Hello" )12optional . shouldBePresentAnd { it == "Hello" }13val optional : Optional < String > = Optional . empty ()14optional . shouldBePresentAnd { it == "Hello" }15val optional : Optional < String > = Optional . empty ()16optional . shouldBePresentAnd { it == "Hello" }17val optional : Optional < String > = Optional . of ( "Hello" )18optional . shouldBePresentAnd { it == "Hello" }19val optional : Optional < String > = Optional . of ( "Hello" )20optional . shouldBePresentAnd { it == "Hello" }21val optional : Optional < String > = Optional . empty ()22optional . shouldBePresentAnd { it == "Hello" }

Optional.shouldBePresent

Using AI Code Generation

1"Optional should be present" {2val optional = Optional.of("Hello")3optional.shouldBePresent()4}5"Optional should be empty" {6val optional = Optional.empty()7optional.shouldBeEmpty()8}9}10}

Optional.shouldBePresent

Using AI Code Generation

1val optional: Optional<String> = Optional.of("Hello World")2val optional: Optional<String> = Optional.empty()3val optional: Optional<String> = Optional.of("Hello World")4val optional: Optional<String> = Optional.of("Hello World")5val optional: Optional<String> = Optional.empty()6val optional: Optional<String> = Optional.of("Hello World")7val optional: Optional<String> = Optional.empty()8val optional: Optional<String> = Optional.of("Hello World")9val optional: Optional<String> = Optional.empty()10val optional: Optional<String> = Optional.of("Hello World")

Optional.shouldBePresent

Using AI Code Generation

1val optional = Optional.of( "Kotest" )2optional.shouldBePresent()3optional.shouldBePresent( "Kotest" )4optional.shouldBePresent { it.length == 6 }5optional.shouldBePresent( "Kotest" ) { it.length == 6 }6val optional = Optional.empty()7optional.shouldBeAbsent()8optional.shouldBeAbsent( "Kotest" )9optional.shouldBeAbsent { it.length == 6 }10optional.shouldBeAbsent( "Kotest" ) { it.length == 6 }11Optional.shouldBePresent(expected: T)12Optional.shouldBePresent(expected: T, message: String)13Optional.shouldBePresent(expected: T, predicate: (T) -> Boolean)14Optional.shouldBePresent(expected: T, predicate: (T) -> Boolean, message: String)15Optional.shouldBePresent(message: String, predicate: (T) -> Boolean)16Optional.shouldBePresent(message: () -> String, predicate: (T) -> Boolean)17Optional.shouldBePresent(message: () -> String)18Optional.shouldBePresent(predicate: (T) -> Boolean, message: String)19Optional.shouldBePresent(predicate: (T) -> Boolean)20Optional.shouldBePresent(predicate: (T) -> Boolean, message: () -> String)21Optional.shouldBePresent(message: () -> String, predicate: (T) -> Boolean)22Optional.shouldBePresent(message: String, predicate: (T) -> Boolean)23Optional.shouldBePresent(message: String)24Optional.shouldBePresent()25Optional.shouldBePresent(predicate: (T) -> Boolean, message: () -> String)26Optional.shouldBePresent(message: () -> String)27Optional.shouldBePresent(expected: T, message: () -> String)28Optional.shouldBePresent(expected: T, predicate: (T) -> Boolean, message: () -> String)29Optional.shouldBePresent(expected: T, predicate: (T) -> Boolean, message: String)30Optional.shouldBePresent(expected: T, message: () -> String)31Optional.shouldBePresent(expected: T, predicate: (T) -> Boolean, message: () -> String)32Optional.shouldBePresent(expected: T, predicate:

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