Merge pull request #174 from ktorio/vgoncharova/KTOR-6033

Updated GraalVM Example to run tests on GraalVM with native image build

Author: VGoncharova

graalvm/README.md

@@ -15,6 +15,10 @@ A demo project that shows how to combine Ktor server applications with [GraalVM]
 3. The previous step produces an executable file named `graal-server` which can then be run. Open up
    `http://0.0.0.0:8080` to test the server.
 
+4. Run the command `./gradlew nativeTestCompile` (or `gradlew nativeTestCompile` on Windows) to build an executable file for tests.
+
+5. That step produces an executable file named `graal-test-server` which can then be run.
+
 ### Current limitations
 
 Using the `Netty` engine is not compatible with GraalVM. Please following

graalvm/build.gradle.kts

@@ -2,7 +2,7 @@ plugins {
     application
     kotlin("jvm") version "1.7.20"
     id("io.ktor.plugin") version "2.3.2"
-    id("org.graalvm.buildtools.native") version "0.9.11"
+    id("org.graalvm.buildtools.native") version "0.9.19"
 }
 
 group = "io.ktor"
@@ -19,21 +19,54 @@ dependencies {
     implementation("ch.qos.logback:logback-classic:1.4.6")
     implementation("io.ktor:ktor-server-core-jvm")
     implementation("io.ktor:ktor-server-cio-jvm")
+
+    testImplementation("io.ktor:ktor-server-test-host-jvm")
+    testImplementation("org.jetbrains.kotlin:kotlin-test")
 }
 
 graalvmNative {
     binaries {
+
         named("main") {
             fallback.set(false)
             verbose.set(true)
 
+            buildArgs.add("--initialize-at-build-time=ch.qos.logback")
+            buildArgs.add("--initialize-at-build-time=io.ktor,kotlin")
+            buildArgs.add("--initialize-at-build-time=org.slf4j.LoggerFactory")
+
+            buildArgs.add("-H:+InstallExitHandlers")
+            buildArgs.add("-H:+ReportUnsupportedElementsAtRuntime")
+            buildArgs.add("-H:+ReportExceptionStackTraces")
+
+            imageName.set("graalvm-server")
+        }
+
+        named("test"){
+            fallback.set(false)
+            verbose.set(true)
+
+            buildArgs.add("--initialize-at-build-time=ch.qos.logback")
             buildArgs.add("--initialize-at-build-time=io.ktor,kotlin")
+            buildArgs.add("--initialize-at-build-time=org.slf4j.LoggerFactory")
 
             buildArgs.add("-H:+InstallExitHandlers")
             buildArgs.add("-H:+ReportUnsupportedElementsAtRuntime")
             buildArgs.add("-H:+ReportExceptionStackTraces")
 
-            imageName.set("graal-server")
+            val path = "${projectDir}/src/test/resources/META-INF/native-image/"
+            buildArgs.add("-H:ReflectionConfigurationFiles=${path}reflect-config.json")
+            buildArgs.add("-H:ResourceConfigurationFiles=${path}resource-config.json")
+
+            imageName.set("graalvm-test-server")
         }
     }
+
+    tasks.withType<Test>().configureEach {
+        useJUnitPlatform()
+        testLogging {
+            events("passed", "skipped", "failed")
+        }
+    }
+
 }

graalvm/src/test/kotlin/io/ktorgraal/ConfigureRoutingTest.kt

@@ -0,0 +1,21 @@
+package io.ktorgraal
+
+import io.ktor.client.request.*
+import io.ktor.client.statement.*
+import io.ktor.server.testing.*
+import io.ktorgraal.plugins.configureRouting
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class ConfigureRoutingTest {
+
+    @Test
+    fun testGetHi() = testApplication {
+        application {
+            configureRouting()
+        }
+        client.get("/").apply {
+            assertEquals("Hello GraalVM!", bodyAsText())
+        }
+    }
+}

graalvm/src/test/resources/META-INF/native-image/reflect-config.json

@@ -0,0 +1,33 @@
+[
+  {
+    "name": "kotlin.internal.jdk8.JDK8PlatformImplementations",
+    "allDeclaredConstructors": true,
+    "allPublicConstructors": true,
+    "allDeclaredFields": true,
+    "allPublicFields": true,
+    "allDeclaredMethods": true,
+    "allPublicMethods": true
+  },
+  {
+    "name": "io.ktor.utils.io.pool.DefaultPool",
+    "fields": [
+      {
+        "name": "top",
+        "allowUnsafeAccess": true
+      }
+    ]
+  },
+  {
+    "name": "kotlin.reflect.jvm.internal.ReflectionFactoryImpl",
+    "allDeclaredConstructors":true
+  },
+  {
+    "name": "kotlin.KotlinVersion[]"
+  },
+  {
+    "name": "kotlin.KotlinVersion$Companion"
+  },
+  {
+    "name": "kotlin.KotlinVersion$Companion[]"
+  }
+]

graalvm/src/test/resources/META-INF/native-image/resource-config.json

@@ -0,0 +1,7 @@
+{
+  "resources":[
+    {"pattern":"META-INF/.*.kotlin_module$"},
+    {"pattern":"META-INF/services/.*"},
+    {"pattern":".*.kotlin_builtins"}
+  ]
+}