ENT-3422: Upgrade DJVM to use JUnit 5. (#5131)

* Switch to JUnit 5's migration support. * Upgrade to Gradle 5.4.1. * Upgrade to JUnit 5 Jupiter.
2025-02-21 01:42:24 +00:00 · 2019-05-20 09:11:21 +01:00 · 2019-05-20 09:11:21 +01:00 · 5ca409d139
commit 5ca409d139
parent 0eab42b63e
30 changed files with 79 additions and 66 deletions
--- a/djvm/build.gradle
+++ b/djvm/build.gradle
@ -1,7 +1,7 @@
 buildscript {
    ext {
        corda_djvm_version = '5.0-SNAPSHOT'
-        artifactory_contextUrl = 'https://ci-artifactory.corda.r3cev.com/artifactory'
+        artifactory_contextUrl = 'https://software.r3.com/artifactory'
    }

    repositories {
@ -14,7 +14,7 @@ buildscript {
 }

 plugins {
-    id 'net.corda.plugins.publish-utils' version '4.0.42' apply false
+    id 'net.corda.plugins.publish-utils' version '4.0.44' apply false
    id 'com.github.johnrengelman.shadow' version '5.0.0' apply false
    id 'com.jfrog.artifactory' version '4.7.3' apply false
    id 'com.jfrog.bintray' version '1.4' apply false
@ -57,6 +57,8 @@ subprojects {
    }

    tasks.withType(Test) {
+        useJUnitPlatform()
+
        // Prevent the project from creating temporary files outside of the build directory.
        systemProperty 'java.io.tmpdir', buildDir.absolutePath
    }
@ -110,7 +112,7 @@ artifactory {
 }

 wrapper {
-    gradleVersion = "5.2.1"
+    gradleVersion = "5.4.1"
    distributionType = Wrapper.DistributionType.ALL
 }

--- a/djvm/djvm/build.gradle
+++ b/djvm/djvm/build.gradle
@ -33,8 +33,10 @@ dependencies {

    // ClassGraph: classpath scanning
    shadow "io.github.classgraph:classgraph:$class_graph_version"
-    
-    testCompile "junit:junit:${junit_version}"
+
+    testImplementation "org.junit.jupiter:junit-jupiter-api:$junit_jupiter_version"
+    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junit_jupiter_version"
+    testRuntimeOnly "org.junit.platform:junit-platform-launcher:$junit_platform_version"

    // Test utilities
    testImplementation "org.assertj:assertj-core:$assertj_version"
--- a/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxEnumJavaTest.java
+++ b/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxEnumJavaTest.java
@ -2,9 +2,10 @@ package net.corda.djvm.execution;

 import net.corda.djvm.TestBase;
 import net.corda.djvm.WithJava;
+import org.junit.jupiter.api.Test;
+
 import static net.corda.djvm.messages.Severity.*;
 import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
-import org.junit.Test;

 import java.util.EnumMap;
 import java.util.EnumSet;
--- a/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxExecutorJavaTest.java
+++ b/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxExecutorJavaTest.java
@ -2,7 +2,7 @@ package net.corda.djvm.execution;

 import net.corda.djvm.TestBase;
 import net.corda.djvm.WithJava;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;

 import java.util.Set;
 import java.util.function.Function;
--- a/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxObjectHashCodeJavaTest.java
+++ b/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxObjectHashCodeJavaTest.java
@ -2,7 +2,7 @@ package net.corda.djvm.execution;

 import net.corda.djvm.TestBase;
 import net.corda.djvm.WithJava;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;

 import java.util.function.Function;

--- a/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxThrowableJavaTest.java
+++ b/djvm/djvm/src/test/java/net/corda/djvm/execution/SandboxThrowableJavaTest.java
@ -2,9 +2,9 @@ package net.corda.djvm.execution;

 import net.corda.djvm.TestBase;
 import net.corda.djvm.WithJava;
-import static net.corda.djvm.messages.Severity.*;
+import org.junit.jupiter.api.Test;

-import org.junit.Test;
+import static net.corda.djvm.messages.Severity.*;

 import java.net.URI;
 import java.net.URISyntaxException;
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/DJVMExceptionTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/DJVMExceptionTest.kt
@ -4,7 +4,7 @@ import net.corda.djvm.assertions.AssertionExtensions.assertThatDJVM
 import net.corda.djvm.rewiring.SandboxClassLoadingException
 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Assertions.assertThatExceptionOfType
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import sandbox.SandboxFunction
 import sandbox.Task
 import java.util.*
@ -71,7 +71,7 @@ class DJVMExceptionTest : TestBase() {

        assertThat(result.getArray("getStackTrace"))
            .hasOnlyElementsOfType(djvm.stackTraceElementClass)
-            .isNotEmpty()
+            .isNotEmpty
    }

    @Test
@ -88,7 +88,7 @@ class DJVMExceptionTest : TestBase() {

        assertThat(result.getArray("getStackTrace"))
            .hasOnlyElementsOfType(djvm.stackTraceElementClass)
-            .isNotEmpty()
+            .isNotEmpty

        assertThatExceptionOfType(ClassNotFoundException::class.java)
            .isThrownBy { djvm.classFor("sandbox.java.lang.RuntimeException\$1DJVM") }
@ -108,7 +108,7 @@ class DJVMExceptionTest : TestBase() {

        assertThat(result.getArray("getStackTrace"))
            .hasOnlyElementsOfType(djvm.stackTraceElementClass)
-            .isNotEmpty()
+            .isNotEmpty

        assertThatDJVM(djvm.classFor("sandbox.java.util.EmptyStackException\$1DJVM"))
            .isAssignableFrom(RuntimeException::class.java)
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/DJVMTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/DJVMTest.kt
@ -1,8 +1,8 @@
 package net.corda.djvm

 import org.assertj.core.api.Assertions.*
-import org.junit.Assert.*
-import org.junit.Test
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
 import sandbox.java.lang.sandbox
 import java.text.DecimalFormatSymbols

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/TestBase.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/TestBase.kt
@ -20,10 +20,10 @@ import net.corda.djvm.source.ClassSource
 import net.corda.djvm.source.SourceClassLoader
 import net.corda.djvm.utilities.Discovery
 import net.corda.djvm.validation.RuleValidator
-import org.junit.After
-import org.junit.AfterClass
-import org.junit.Assert.assertEquals
-import org.junit.BeforeClass
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.BeforeAll
 import org.objectweb.asm.ClassReader
 import org.objectweb.asm.ClassWriter
 import org.objectweb.asm.Type
@ -81,7 +81,7 @@ abstract class TestBase {
         */
        inline fun <reified T> nameOf(prefix: String = "") = "$prefix${Type.getInternalName(T::class.java)}"

-        @BeforeClass
+        @BeforeAll
        @JvmStatic
        fun setupParentClassLoader() {
            val rootConfiguration = AnalysisConfiguration.createRoot(
@ -105,7 +105,7 @@ abstract class TestBase {
            parentClassLoader = SandboxClassLoader.createFor(parentConfiguration)
        }

-        @AfterClass
+        @AfterAll
        @JvmStatic
        fun destroyRootContext() {
            parentConfiguration.analysisConfiguration.close()
@ -126,7 +126,7 @@ abstract class TestBase {
    val context: AnalysisContext
        get() = AnalysisContext.fromConfiguration(configuration)

-    @After
+    @AfterEach
    fun destroy() {
        configuration.close()
    }
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/ClassAndMemberVisitorTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/ClassAndMemberVisitorTest.kt
@ -13,7 +13,7 @@ import net.corda.djvm.code.instructions.TypeInstruction
 import net.corda.djvm.references.ClassRepresentation
 import net.corda.djvm.references.Member
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

@Suppress("unused")
 class ClassAndMemberVisitorTest : TestBase() {
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/ClassResolverTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/ClassResolverTest.kt
@ -1,7 +1,7 @@
 package net.corda.djvm.analysis

 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class ClassResolverTest {

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/SourceLocationTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/SourceLocationTest.kt
@ -1,7 +1,7 @@
 package net.corda.djvm.analysis

 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class SourceLocationTest {

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/WhitelistTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/analysis/WhitelistTest.kt
@ -2,7 +2,7 @@ package net.corda.djvm.analysis

 import net.corda.djvm.TestBase
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class WhitelistTest : TestBase() {

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/code/ClassMutatorTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/code/ClassMutatorTest.kt
@ -5,7 +5,7 @@ import net.corda.djvm.analysis.AnalysisRuntimeContext
 import net.corda.djvm.references.ClassRepresentation
 import net.corda.djvm.references.Member
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.Opcodes.ACC_STRICT

@Suppress("unused")
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/code/EmitterModuleTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/code/EmitterModuleTest.kt
@ -3,7 +3,7 @@ package net.corda.djvm.code
 import net.corda.djvm.TestBase
 import net.corda.djvm.analysis.ClassAndMemberVisitor
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.ClassVisitor
 import org.objectweb.asm.MethodVisitor
 import org.objectweb.asm.Opcodes.NEW
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/costing/RuntimeCostTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/costing/RuntimeCostTest.kt
@ -2,7 +2,7 @@ package net.corda.djvm.costing

 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Assertions.assertThatExceptionOfType
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import sandbox.net.corda.djvm.costing.ThresholdViolationError
 import kotlin.concurrent.thread

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxEnumTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxEnumTest.kt
@ -2,7 +2,7 @@ package net.corda.djvm.execution

 import net.corda.djvm.TestBase
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import java.util.*
 import java.util.function.Function

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxExecutorTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxExecutorTest.kt
@ -11,7 +11,7 @@ import net.corda.djvm.assertions.AssertionExtensions.withProblem
 import net.corda.djvm.rewiring.SandboxClassLoadingException
 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Assertions.assertThatExceptionOfType
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import sandbox.net.corda.djvm.costing.ThresholdViolationError
 import sandbox.net.corda.djvm.rules.RuleViolationError
 import java.nio.file.Files
@ -431,7 +431,7 @@ class SandboxExecutorTest : TestBase() {
        override fun apply(input: Int): String? {
            return synchronized(this) {
                @Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN")
-                val javaObject = this as java.lang.Object
+                val javaObject = this as Object
                when(input) {
                    1 -> {
                        javaObject.notify()
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxThrowableTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/execution/SandboxThrowableTest.kt
@ -2,7 +2,7 @@ package net.corda.djvm.execution

 import net.corda.djvm.TestBase
 import org.assertj.core.api.Assertions.*
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import java.util.function.Function

 class SandboxThrowableTest : TestBase() {
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/formatter/MemberFormatterTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/formatter/MemberFormatterTest.kt
@ -2,7 +2,7 @@ package net.corda.djvm.formatter

 import net.corda.djvm.formatting.MemberFormatter
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class MemberFormatterTest {

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/references/ClassHierarchyTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/references/ClassHierarchyTest.kt
@ -1,7 +1,7 @@
 package net.corda.djvm.references

 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.Opcodes

 class ClassHierarchyTest {
@ -39,7 +39,7 @@ class ClassHierarchyTest {
        classes.add(clazz1)
        val member = classes.getMember(clazz<FirstClass>().name, "method", "()V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<FirstClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "()V")
@ -63,7 +63,7 @@ class ClassHierarchyTest {
        classes.add(clazz2)
        val member = classes.getMember(clazz<SecondClass>().name, "method", "()V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<FirstClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "()V")
@ -78,7 +78,7 @@ class ClassHierarchyTest {
        classes.add(clazz2)
        val member = classes.getMember(clazz<SecondClass>().name, "method", "()V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<SecondClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "()V")
@ -98,7 +98,7 @@ class ClassHierarchyTest {
        classes.add(clazz4)
        val member = classes.getMember(clazz<FourthClass>().name, "method", "()V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<SecondClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "()V")
@ -123,42 +123,42 @@ class ClassHierarchyTest {

        var member = classes.getMember(clazz<FourthClass>().name, "method", "()V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<FirstClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "()V")

        member = classes.getMember(clazz<FourthClass>().name, "method", "(I)V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<FirstClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "(I)V")

        member = classes.getMember(clazz<FourthClass>().name, "method", "(J)V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<SecondClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "(J)V")

        member = classes.getMember(clazz<FourthClass>().name, "method", "(B)V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<ThirdClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "method")
                .hasFieldOrPropertyWithValue("signature", "(B)V")

        member = classes.getMember(clazz<FourthClass>().name, "anotherMethod", "([B)V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<FourthClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "anotherMethod")
                .hasFieldOrPropertyWithValue("signature", "([B)V")

        member = classes.getMember(clazz<ThirdClass>().name, "anotherMethod", "([B)V")
        assertThat(member)
-                .isNotNull()
+                .isNotNull
                .hasFieldOrPropertyWithValue("className", clazz<SecondClass>().name)
                .hasFieldOrPropertyWithValue("memberName", "anotherMethod")
                .hasFieldOrPropertyWithValue("signature", "([B)V")
@ -183,8 +183,8 @@ class ClassHierarchyTest {
                val apiVersion = Opcodes.V1_8
                val access = 0
                val className = classModule.getBinaryClassName(it.name)
-                val superClassName = TSuper::class.java.let {
-                    classModule.getBinaryClassName(it.name)
+                val superClassName = TSuper::class.java.let { s ->
+                    classModule.getBinaryClassName(s.name)
                }
                ClassRepresentation(apiVersion, access, className, superClassName, sourceFile = "${it.simpleName}.kt")
            }
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/references/ClassModuleTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/references/ClassModuleTest.kt
@ -1,7 +1,7 @@
 package net.corda.djvm.references

 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class ClassModuleTest {

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/references/MemberModuleTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/references/MemberModuleTest.kt
@ -3,7 +3,7 @@ package net.corda.djvm.references
 import net.corda.djvm.annotations.NonDeterministic
 import org.assertj.core.api.Assertions.assertThat
 import org.jetbrains.annotations.NotNull
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.Type

 class MemberModuleTest {
@ -132,7 +132,7 @@ class MemberModuleTest {
        assertThat(module.isConstructor(member("<clinit>"))).isTrue()
    }

-    private val java.lang.Class<*>.descriptor: String
+    private val Class<*>.descriptor: String
        get() = Type.getDescriptor(this)

    private fun member(member: String) =
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/rewiring/ClassRewriterTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/rewiring/ClassRewriterTest.kt
@ -5,7 +5,7 @@ import net.corda.djvm.TestBase
 import net.corda.djvm.assertions.AssertionExtensions.assertThat
 import net.corda.djvm.execution.ExecutionProfile
 import org.assertj.core.api.Assertions.*
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import sandbox.net.corda.djvm.costing.ThresholdViolationError
 import java.nio.file.Paths
 import java.util.*
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/rules/ReferenceExtractorTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/rules/ReferenceExtractorTest.kt
@ -3,7 +3,7 @@ package net.corda.djvm.rules
 import foo.bar.sandbox.Callable
 import net.corda.djvm.TestBase
 import net.corda.djvm.assertions.AssertionExtensions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.Type
 import java.util.*

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/rules/RuleValidatorTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/rules/RuleValidatorTest.kt
@ -4,7 +4,7 @@ import foo.bar.sandbox.Callable
 import net.corda.djvm.TestBase
 import net.corda.djvm.assertions.AssertionExtensions.assertThat
 import net.corda.djvm.messages.Severity
-import org.junit.Test
+import org.junit.jupiter.api.Test
 import org.objectweb.asm.Opcodes
 import sandbox.greymalkin.StringReturner

--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/source/SourceClassLoaderTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/source/SourceClassLoaderTest.kt
@ -3,8 +3,9 @@ package net.corda.djvm.source
 import net.corda.djvm.analysis.ClassResolver
 import net.corda.djvm.analysis.Whitelist
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.After
-import org.junit.Test
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import java.nio.file.Files
 import java.nio.file.Path

@ -19,10 +20,12 @@ class SourceClassLoaderTest {
        assertThat(clazz.simpleName).isEqualTo("Boolean")
    }

-    @Test(expected = ClassNotFoundException::class)
+    @Test
    fun `cannot load arbitrary class when no files are provided to the class loader`() {
        val classLoader = SourceClassLoader(emptyList(), classResolver)
-        classLoader.loadClass("net.foo.NonExistentClass")
+        assertThrows<ClassNotFoundException> {
+            classLoader.loadClass("net.foo.NonExistentClass")
+        }
    }

    @Test
@ -34,11 +37,13 @@ class SourceClassLoaderTest {
        }
    }

-    @Test(expected = ClassNotFoundException::class)
+    @Test
    fun `cannot load arbitrary class when JAR file is provided to the class loader`() {
        useTemporaryFile("jar-with-single-class.jar") {
            val classLoader = SourceClassLoader(this, classResolver)
-            classLoader.loadClass("net.foo.NonExistentClass")
+            assertThrows<ClassNotFoundException> {
+                classLoader.loadClass("net.foo.NonExistentClass")
+            }
        }
    }

@ -53,11 +58,13 @@ class SourceClassLoaderTest {
        }
    }

-    @Test(expected = ClassNotFoundException::class)
+    @Test
    fun `cannot load arbitrary class when multiple JAR files are provided to the class loader`() {
        useTemporaryFile("jar-with-single-class.jar", "jar-with-two-classes.jar") {
            val classLoader = SourceClassLoader(this, classResolver)
-            classLoader.loadClass("com.somewhere.NonExistentClass")
+            assertThrows<ClassNotFoundException> {
+                classLoader.loadClass("com.somewhere.NonExistentClass")
+            }
        }
    }

@ -75,7 +82,7 @@ class SourceClassLoaderTest {
        }
    }

-    @After
+    @AfterEach
    fun cleanup() {
        openedFiles.forEach {
            try {
--- a/djvm/djvm/src/test/kotlin/net/corda/djvm/utilities/DiscoveryTest.kt
+++ b/djvm/djvm/src/test/kotlin/net/corda/djvm/utilities/DiscoveryTest.kt
@ -5,7 +5,7 @@ import net.corda.djvm.code.DefinitionProvider
 import net.corda.djvm.code.Emitter
 import net.corda.djvm.rules.Rule
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.Test
+import org.junit.jupiter.api.Test

 class DiscoveryTest : TestBase() {

--- a/djvm/gradle.properties
+++ b/djvm/gradle.properties
@ -6,7 +6,8 @@ assertj_version=3.12.1
 class_graph_version=4.6.12
 jcabi_manifests_version=1.1
 jopt_simple_version=5.0.2
-junit_version=4.12
+junit_jupiter_version=5.4.2
+junit_platform_version=1.4.2
 kotlin_version=1.2.71
 log4j_version=2.11.2
 picocli_version=3.8.0
--- a/djvm/gradle/wrapper/gradle-wrapper.properties
+++ b/djvm/gradle/wrapper/gradle-wrapper.properties
@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists