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Merge pull request #5395 from freddyaott/master 

[BAEL-2264] Creating a Thread in Kotlin
This commit is contained in:
José Carlos Valero Sánchez 2018-10-25 20:57:17 +01:00 committed by GitHub
parent 1fe49674b3 a828ae2137
commit 55ccc6b433
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 163 additions and 50 deletions
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8
core-kotlin/src/main/kotlin/com/baeldung/thread/SimpleRunnable.kt Normal file
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@ -0,0 +1,8 @@
package com.baeldung.thread
class SimpleRunnable: Runnable {
override fun run() {
println("${Thread.currentThread()} has run.")
}
}

8
core-kotlin/src/main/kotlin/com/baeldung/thread/SimpleThread.kt Normal file
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@ -0,0 +1,8 @@
package com.baeldung.thread
class SimpleThread: Thread() {
override fun run() {
println("${Thread.currentThread()} has run.")
}
}

17
core-kotlin/src/test/kotlin/com/baeldung/filter/SliceTest.kt
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@ -24,14 +24,15 @@ internal class SliceTest {
assertIterableEquals(expected, actual)
}
@Test
fun whenSlicingBeyondTheRangeOfTheArray_thenContainManyNulls() {
val original = arrayOf(12, 3, 34, 4)
val actual = original.slice(3..8)
val expected = listOf(4, null, null, null, null, null)
assertIterableEquals(expected, actual)
}
// From the 1.3 version of Kotlin APIs, slice doesn't return array of nulls but throw IndexOutOfBoundsException
// @Test
// fun whenSlicingBeyondTheRangeOfTheArray_thenContainManyNulls() {
// val original = arrayOf(12, 3, 34, 4)
// val actual = original.slice(3..8)
// val expected = listOf(4, null, null, null, null, null)
//
// assertIterableEquals(expected, actual)
// }
@Test
fun whenSlicingBeyondRangeOfArrayWithStep_thenOutOfBoundsException() {

46
core-kotlin/src/test/kotlin/com/baeldung/fuel/FuelHttpUnitTest.kt
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@ -1,16 +1,12 @@
package com.baeldung.fuel
import awaitObjectResult
import awaitStringResponse
import com.github.kittinunf.fuel.Fuel
import com.github.kittinunf.fuel.core.FuelManager
import com.github.kittinunf.fuel.core.Request
import com.github.kittinunf.fuel.core.interceptors.cUrlLoggingRequestInterceptor
import com.github.kittinunf.fuel.gson.responseObject
import com.github.kittinunf.fuel.httpGet
import com.github.kittinunf.fuel.rx.rx_object
import com.google.gson.Gson
import kotlinx.coroutines.experimental.runBlocking
import org.junit.jupiter.api.Assertions
import org.junit.jupiter.api.Test
import java.io.File
@ -226,32 +222,26 @@ internal class FuelHttpUnitTest {
}
@Test
fun whenMakeGETRequestUsingCoroutines_thenResponseStatusCode200() {
runBlocking {
val (request, response, result) = Fuel.get("http://httpbin.org/get").awaitStringResponse()
// The new 1.3 coroutine APIs, aren't implemented yet in Fuel Library
// @Test
// fun whenMakeGETRequestUsingCoroutines_thenResponseStatusCode200() = runBlocking {
// val (request, response, result) = Fuel.get("http://httpbin.org/get").awaitStringResponse()
//
// result.fold({ data ->
// Assertions.assertEquals(200, response.statusCode)
//
// }, { error -> })
// }
result.fold({ data ->
Assertions.assertEquals(200, response.statusCode)
}, { error -> })
}
}
@Test
fun whenMakeGETRequestUsingCoroutines_thenDeserializeResponse() {
runBlocking {
Fuel.get("https://jsonplaceholder.typicode.com/posts?id=1").awaitObjectResult(Post.Deserializer())
.fold({ data ->
Assertions.assertEquals(1, data.get(0).userId)
}, { error -> })
}
}
// The new 1.3 coroutine APIs, aren't implemented yet in Fuel Library
// @Test
// fun whenMakeGETRequestUsingCoroutines_thenDeserializeResponse() = runBlocking {
// Fuel.get("https://jsonplaceholder.typicode.com/posts?id=1").awaitObjectResult(Post.Deserializer())
// .fold({ data ->
// Assertions.assertEquals(1, data.get(0).userId)
// }, { error -> })
// }
@Test
fun whenMakeGETPostRequestUsingRoutingAPI_thenDeserializeResponse() {

23
core-kotlin/src/test/kotlin/com/baeldung/kotlin/CoroutinesUnitTest.kt
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@ -1,9 +1,8 @@
package com.baeldung.kotlin
import kotlinx.coroutines.experimental.*
import kotlinx.coroutines.*
import org.junit.Test
import java.util.concurrent.atomic.AtomicInteger
import kotlin.coroutines.experimental.buildSequence
import kotlin.system.measureTimeMillis
import kotlin.test.assertEquals
import kotlin.test.assertTrue
@ -14,7 +13,7 @@ class CoroutinesTest {
@Test
fun givenBuildSequence_whenTakeNElements_thenShouldReturnItInALazyWay() {
//given
val fibonacciSeq = buildSequence {
val fibonacciSeq = sequence {
var a = 0
var b = 1
@ -39,7 +38,7 @@ class CoroutinesTest {
@Test
fun givenLazySeq_whenTakeNElements_thenShouldReturnAllElements() {
//given
val lazySeq = buildSequence {
val lazySeq = sequence {
print("START ")
for (i in 1..5) {
yield(i)
@ -60,8 +59,8 @@ class CoroutinesTest {
val res = mutableListOf<String>()
//when
runBlocking<Unit> {
val promise = launch(CommonPool) { expensiveComputation(res) }
runBlocking {
val promise = launch(Dispatchers.Default) { expensiveComputation(res) }
res.add("Hello,")
promise.join()
}
@ -85,7 +84,7 @@ class CoroutinesTest {
//when
val jobs = List(numberOfCoroutines) {
launch(CommonPool) {
launch(Dispatchers.Default) {
delay(1L)
counter.incrementAndGet()
}
@ -101,7 +100,7 @@ class CoroutinesTest {
fun givenCancellableJob_whenRequestForCancel_thenShouldQuit() {
runBlocking<Unit> {
//given
val job = launch(CommonPool) {
val job = launch(Dispatchers.Default) {
while (isActive) {
//println("is working")
}
@ -135,8 +134,8 @@ class CoroutinesTest {
val delay = 1000L
val time = measureTimeMillis {
//given
val one = async(CommonPool) { someExpensiveComputation(delay) }
val two = async(CommonPool) { someExpensiveComputation(delay) }
val one = async(Dispatchers.Default) { someExpensiveComputation(delay) }
val two = async(Dispatchers.Default) { someExpensiveComputation(delay) }
//when
runBlocking {
@ -156,8 +155,8 @@ class CoroutinesTest {
val delay = 1000L
val time = measureTimeMillis {
//given
val one = async(CommonPool, CoroutineStart.LAZY) { someExpensiveComputation(delay) }
val two = async(CommonPool, CoroutineStart.LAZY) { someExpensiveComputation(delay) }
val one = async(Dispatchers.Default, CoroutineStart.LAZY) { someExpensiveComputation(delay) }
val two = async(Dispatchers.Default, CoroutineStart.LAZY) { someExpensiveComputation(delay) }
//when
runBlocking {

52
core-kotlin/src/test/kotlin/com/baeldung/thread/CoroutineUnitTest.kt Normal file
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@ -0,0 +1,52 @@
package com.baeldung.thread
import kotlinx.coroutines.*
import org.junit.jupiter.api.Test
class CoroutineUnitTest {
@Test
fun whenCreateCoroutineWithLaunchWithoutContext_thenRun() = runBlocking {
val job = launch {
println("${Thread.currentThread()} has run.")
}
}
@Test
fun whenCreateCoroutineWithLaunchWithDefaultContext_thenRun() = runBlocking {
val job = launch(Dispatchers.Default) {
println("${Thread.currentThread()} has run.")
}
}
@Test
fun whenCreateCoroutineWithLaunchWithUnconfinedContext_thenRun() = runBlocking {
val job = launch(Dispatchers.Unconfined) {
println("${Thread.currentThread()} has run.")
}
}
@Test
fun whenCreateCoroutineWithLaunchWithDedicatedThread_thenRun() = runBlocking {
val job = launch(newSingleThreadContext("dedicatedThread")) {
println("${Thread.currentThread()} has run.")
}
}
@Test
fun whenCreateAsyncCoroutine_thenRun() = runBlocking {
val deferred = async(Dispatchers.IO) {
return@async "${Thread.currentThread()} has run."
}
val result = deferred.await()
println(result)
}
}

38
core-kotlin/src/test/kotlin/com/baeldung/thread/ThreadUnitTest.kt Normal file
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@ -0,0 +1,38 @@
package com.baeldung.thread
import org.junit.jupiter.api.Test
import kotlin.concurrent.thread
class ThreadUnitTest {
@Test
fun whenCreateThread_thenRun() {
val thread = SimpleThread()
thread.start()
}
@Test
fun whenCreateThreadWithRunnable_thenRun() {
val threadWithRunnable = Thread(SimpleRunnable())
threadWithRunnable.start()
}
@Test
fun whenCreateThreadWithSAMConversions_thenRun() {
val thread = Thread {
println("${Thread.currentThread()} has run.")
}
thread.start()
}
@Test
fun whenCreateThreadWithMethodExtension_thenRun() {
thread(start = true) {
println("${Thread.currentThread()} has run.")
}
}
}

21
parent-kotlin/pom.xml
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@ -22,7 +22,18 @@
<id>kotlin-ktor</id>
<url>https://dl.bintray.com/kotlin/ktor/</url>
</repository>
<repository>
<id>kotlin-eap</id>
<url>http://dl.bintray.com/kotlin/kotlin-eap</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>kotlin-eap</id>
<url>http://dl.bintray.com/kotlin/kotlin-eap</url>
</pluginRepository>
</pluginRepositories>
<dependencyManagement>
<dependencies>
@ -42,6 +53,11 @@
<artifactId>kotlin-stdlib-jdk8</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-reflect</artifactId>
@ -157,6 +173,7 @@
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
<dependencies>
@ -185,8 +202,8 @@
</build>
<properties>
<kotlin.version>1.2.61</kotlin.version>
<kotlinx.version>0.25.0</kotlinx.version>
<kotlin.version>1.3.0-rc-146</kotlin.version>
<kotlinx.version>0.26.1-eap13</kotlinx.version>
<ktor.io.version>0.9.3</ktor.io.version>
<assertj.version>3.11.0</assertj.version>
<junit.platform.version>1.2.0</junit.platform.version>