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How to use Spec.install method of io.kotest.core.extensions.MountableExtension class

Best Kotest code snippet using io.kotest.core.extensions.MountableExtension.Spec.install

JdbcTestContainerExtension.kt

Source:JdbcTestContainerExtension.kt

1package io.kotest.extensions.testcontainers2import com.zaxxer.hikari.HikariDataSource3import io.kotest.core.extensions.MountableExtension4import io.kotest.core.listeners.AfterSpecListener5import io.kotest.core.listeners.TestListener6import io.kotest.core.spec.Spec7import io.kotest.core.test.TestCase8import io.kotest.core.test.TestResult9import io.kotest.core.test.TestType10import io.kotest.core.test.isRootTest11import kotlinx.coroutines.Dispatchers12import kotlinx.coroutines.withContext13import org.testcontainers.containers.JdbcDatabaseContainer14import java.io.PrintWriter15import java.sql.Connection16import java.util.logging.Logger17import javax.sql.DataSource18/**19 * A Kotest [MountableExtension] for [JdbcDatabaseContainer]s that will launch the container20 * upon install, and close after the spec has completed.21 *22 * This extension will create a pooled [HikariDataSource] attached to the database and23 * return that to the user as the materialized value.24 *25 * The pool can be configured in the mount configure method.26 *27 * Note: This extension requires Kotest 5.0+28 *29 * @param container the specific test container type30 * @param lifecycleMode determines how the container should be reset between tests31 *32 * @since 1.1.033 */34class JdbcTestContainerExtension(35   private val container: JdbcDatabaseContainer<Nothing>,36   private val lifecycleMode: LifecycleMode = LifecycleMode.Spec,37) : MountableExtension<TestContainerHikariConfig, DataSource>, AfterSpecListener, TestListener {38   private val ds = SettableDataSource(null)39   private var configure: TestContainerHikariConfig.() -> Unit = {}40   override fun mount(configure: TestContainerHikariConfig.() -> Unit): DataSource {41      this.configure = configure42      if (lifecycleMode == LifecycleMode.Spec) {43         container.start()44         ds.setDataSource(createDataSource())45      }46      return ds47   }48   private fun createDataSource(): HikariDataSource {49      val config = TestContainerHikariConfig()50      config.jdbcUrl = container.jdbcUrl51      config.username = container.username52      config.password = container.password53      config.configure()54      val ds = HikariDataSource(config)55      runInitScripts(ds.connection, config.dbInitScripts)56      return ds57   }58   override suspend fun afterSpec(spec: Spec) {59      withContext(Dispatchers.IO) {60         stop()61      }62   }63   override suspend fun beforeAny(testCase: TestCase) {64      val every = lifecycleMode == LifecycleMode.EveryTest65      val root = lifecycleMode == LifecycleMode.Root && testCase.isRootTest()66      val leaf = lifecycleMode == LifecycleMode.Leaf && testCase.type == TestType.Test67      if (every || root || leaf) {68         start()69      }70   }71   override suspend fun afterAny(testCase: TestCase, result: TestResult) {72      val every = lifecycleMode == LifecycleMode.EveryTest73      val root = lifecycleMode == LifecycleMode.Root && testCase.isRootTest()74      val leaf = lifecycleMode == LifecycleMode.Leaf && testCase.type == TestType.Test75      if (every || root || leaf) {76         stop()77      }78   }79   private suspend fun start() {80      withContext(Dispatchers.IO) {81         container.start()82         ds.setDataSource(createDataSource())83      }84   }85   private suspend fun stop() {86      withContext(Dispatchers.IO) {87         ds.setDataSource(null)88         container.stop()89      }90   }91   private fun runInitScripts(connection: Connection, dbInitScripts: List<String>) {92      val scriptRunner = ScriptRunner(connection)93      if (dbInitScripts.isNotEmpty()) {94         dbInitScripts.forEach {95            val resourceList = ResourceLoader().resolveResource(it)96            resourceList97               .filter { resource -> resource.endsWith(".sql") }98               .forEach { resource ->99                  scriptRunner.runScript(resource.loadToReader())100               }101         }102      }103   }104}105class SettableDataSource(private var ds: HikariDataSource?) : DataSource {106   private fun getDs(): DataSource = ds ?: error("DataSource is not ready")107   fun setDataSource(ds: HikariDataSource?) {108      this.ds?.close()109      this.ds = ds110   }111   override fun getLogWriter(): PrintWriter {112      return getDs().logWriter113   }114   override fun setLogWriter(out: PrintWriter?) {115      getDs().logWriter = out116   }117   override fun setLoginTimeout(seconds: Int) {118      getDs().loginTimeout = seconds119   }120   override fun getLoginTimeout(): Int {121      return getDs().loginTimeout122   }123   override fun getParentLogger(): Logger {124      return getDs().parentLogger125   }126   override fun <T : Any?> unwrap(iface: Class<T>?): T {127      return getDs().unwrap(iface)128   }129   override fun isWrapperFor(iface: Class<*>?): Boolean {130      return getDs().isWrapperFor(iface)131   }132   override fun getConnection(): Connection {133      return getDs().connection134   }135   override fun getConnection(username: String?, password: String?): Connection {136      return getDs().getConnection(username, password)137   }138}...

SharedJdbcDatabaseContainerExtension.kt

Source:SharedJdbcDatabaseContainerExtension.kt

1package io.kotest.extensions.testcontainers2import com.zaxxer.hikari.HikariConfig3import com.zaxxer.hikari.HikariDataSource4import io.kotest.core.extensions.MountableExtension5import io.kotest.core.listeners.AfterProjectListener6import io.kotest.core.listeners.AfterSpecListener7import io.kotest.core.listeners.AfterTestListener8import io.kotest.core.listeners.BeforeSpecListener9import io.kotest.core.listeners.BeforeTestListener10import io.kotest.core.spec.Spec11import io.kotest.core.test.TestCase12import io.kotest.core.test.TestResult13import org.testcontainers.containers.JdbcDatabaseContainer14import java.sql.Connection15/**16 * A Kotest [MountableExtension] for [JdbcDatabaseContainer]s that are started the first time they are17 * installed in a test, and then shared throughout the same gradle module. The container is shutdown18 * after all specs have completed.19 *20 * If no spec is executed that installs a particular container, then that container is never started.21 *22 * This extension will create a pooled [HikariDataSource] attached to the database and23 * return that to the user as the materialized value.24 *25 * The Hikari pool can be configured in the constructor through the [configure] parameter, or through26 * the install method per spec. If the latter option is used, then only the configure function from27 * the install where the container is first started will be executed.28 *29 * Note: This extension requires Kotest 5.0+30 *31 * @param container the specific database test container type32 * @param beforeSpec a beforeSpec callback33 * @param afterSpec an afterSpec callback34 * @param beforeTest a beforeTest callback35 * @param afterTest a afterTest callback36 * @param afterStart called one time, after the container is started37 * @param configure a callback to configure the [HikariConfig] instance that is used to create the [HikariDataSource].38 *39 * @since 1.3.040 */41class SharedJdbcDatabaseContainerExtension(42   private val container: JdbcDatabaseContainer<*>,43   private val beforeTest: suspend (HikariDataSource) -> Unit = {},44   private val afterTest: suspend (HikariDataSource) -> Unit = {},45   private val beforeSpec: suspend (HikariDataSource) -> Unit = {},46   private val afterSpec: suspend (HikariDataSource) -> Unit = {},47   private val afterStart: (HikariDataSource) -> Unit = {},48   private val configure: TestContainerHikariConfig.() -> Unit = {},49) : MountableExtension<TestContainerHikariConfig, HikariDataSource>,50   AfterProjectListener,51   BeforeTestListener,52   BeforeSpecListener,53   AfterTestListener,54   AfterSpecListener {55   private var ds: HikariDataSource? = null56   override fun mount(configure: TestContainerHikariConfig.() -> Unit): HikariDataSource {57      if (!container.isRunning) {58         container.start()59         ds = createDataSource().apply(afterStart)60      }61      return ds ?: error("DataSource was not initialized")62   }63   override suspend fun afterProject() {64      if (container.isRunning) container.stop()65   }66   override suspend fun beforeTest(testCase: TestCase) {67      beforeTest(ds ?: error("DataSource was not initialized"))68   }69   override suspend fun afterTest(testCase: TestCase, result: TestResult) {70      afterTest(ds ?: error("DataSource was not initialized"))71   }72   override suspend fun beforeSpec(spec: Spec) {73      beforeSpec(ds ?: error("DataSource was not initialized"))74   }75   override suspend fun afterSpec(spec: Spec) {76      afterSpec(ds ?: error("DataSource was not initialized"))77   }78   private fun runInitScripts(connection: Connection, dbInitScripts: List<String>) {79      if (dbInitScripts.isNotEmpty()) {80         val scriptRunner = ScriptRunner(connection)81         dbInitScripts.forEach { script ->82            ResourceLoader()83               .resolveResource(script)84               .filter { it.endsWith(".sql") }85               .forEach { scriptRunner.runScript(it.loadToReader()) }86         }87      }88   }89   private fun createDataSource(): HikariDataSource {90      val config = TestContainerHikariConfig()91      config.jdbcUrl = container.jdbcUrl92      config.username = container.username93      config.password = container.password94      config.configure()95      val ds = HikariDataSource(config)96      runInitScripts(ds.connection, config.dbInitScripts)97      return ds98   }99}...

MountableExtensionTest.kt

Source:MountableExtensionTest.kt

1package com.sksamuel.kotest.engine.extensions2import io.kotest.core.extensions.MountableExtension3import io.kotest.core.extensions.install4import io.kotest.core.listeners.BeforeSpecListener5import io.kotest.core.spec.Spec6import io.kotest.core.spec.style.FunSpec7import io.kotest.matchers.shouldBe8import java.util.concurrent.atomic.AtomicBoolean9class MountableExtensionTest : FunSpec() {10   private val mountable = MyMountable()11   private val control = install(mountable) {12      a = "bar"13   }14   init {15      test("mountable extensions should invoke configuration block") {16         control.a shouldBe "bar"17      }18      test("mountable extensions should be installed as regular extensions") {19         mountable.before.get() shouldBe true20      }21   }22}23data class Config(var a: String)24class MyMountable : MountableExtension<Config, Config>, BeforeSpecListener {25   val before = AtomicBoolean(false)26   override suspend fun beforeSpec(spec: Spec) {27      before.set(true)28   }29   override fun mount(configure: (Config) -> Unit): Config {30      val config = Config("foo")31      configure(config)32      return config33   }34}...

MountableExtension.kt

Source:MountableExtension.kt

1package io.kotest.core.extensions2import io.kotest.core.spec.Spec3/**4 * A [MountableExtension] is an [Extension] that can return a materialized value to the5 * user and allows for a configuration block.6 *7 * This allows extensions to return control objects which differ from the extension itself.8 *9 * For example:10 *11 * class MyTest : FunSpec() {12 *  init {13 *   val kafka = install(EmbeddedKafka) {14 *     port = 909215 *   }16 *  }17 * }18 *19 * Here `kafka` is a materialized value that contains details of the host/port of the20 * started kafka instance and `EmbeddedKafka` is the extension itself.21 *22 */23interface MountableExtension<CONFIG, MATERIALIZED> : Extension {24   // cannot be suspending as it is invoked by install that is used in constructors25   fun mount(configure: CONFIG.() -> Unit): MATERIALIZED26}27// cannot be suspending as it is used in constructors28fun <CONFIG, MATERIALIZED> Spec.install(29   mountable: MountableExtension<CONFIG, MATERIALIZED>,30   configure: CONFIG.() -> Unit = {}31): MATERIALIZED {32   extensions(mountable)33   return mountable.mount(configure)34}...

Spec.install

Using AI Code Generation

1    Spec.install(Extension1())2    Spec.install(Extension2())3    Spec.install(Extension3())4    Spec.install(Extension4())5    Spec.install(Extension5())6    Spec.install(Extension6())7    Spec.install(Extension7())8    Spec.install(Extension8())9    Spec.install(Extension9())10    Spec.install(Extension10())11    Spec.install(Extension11())12    Spec.install(Extension12())13    Spec.install(Extension13())14    Spec.install(Extension14())15    Spec.install(Extension15())16    Spec.install(Extension16())17    Spec.install(Extension17())18    Spec.install(Extension18())19    Spec.install(Extension19())20    Spec.install(Extension20())21    Spec.install(Extension21())22    Spec.install(Extension22())23    Spec.install(Extension23())24    Spec.install(Extension24())25    Spec.install(Extension25())26    Spec.install(Extension26())27    Spec.install(Extension27())28    Spec.install(Extension28())29    Spec.install(Extension29())30    Spec.install(Extension30())31    Spec.install(Extension31())32    Spec.install(Extension32())33    Spec.install(Extension33())34    Spec.install(Extension34())35    Spec.install(Extension35())36    Spec.install(Extension36())37    Spec.install(Extension37())38    Spec.install(Extension38())39    Spec.install(Extension39())40    Spec.install(Extension40())41    Spec.install(Extension41())42    Spec.install(Extension42())43    Spec.install(Extension43())44    Spec.install(Extension44())45    Spec.install(Extension45())46    Spec.install(Extension46())47    Spec.install(Extension47())48    Spec.install(Extension48())49    Spec.install(Extension49())50    Spec.install(Extension50())51    Spec.install(Extension51())52    Spec.install(Extension52())53    Spec.install(Extension53())54    Spec.install(Extension54())55    Spec.install(Extension55())56    Spec.install(Extension56())57    Spec.install(Extension57())58    Spec.install(Extension58())59    Spec.install(Extension59())60    Spec.install(Extension60())61    Spec.install(Extension61())62    Spec.install(Extension62())63    Spec.install(Extension63())64    Spec.install(Extension64())65    Spec.install(Extension65())66    Spec.install(Extension66())67    Spec.install(Extension67())68    Spec.install(Extension68())69    Spec.install(Extension69())70    Spec.install(Extension70

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