diff --git a/pom.xml b/pom.xml
index df8a2ab..25f82b5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -124,9 +124,8 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.13.2</version>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/src/test/java/org/apache/maven/shared/io/download/DefaultDownloadManagerTest.java b/src/test/java/org/apache/maven/shared/io/download/DefaultDownloadManagerTest.java
index 33bbaad..b73469e 100644
--- a/src/test/java/org/apache/maven/shared/io/download/DefaultDownloadManagerTest.java
+++ b/src/test/java/org/apache/maven/shared/io/download/DefaultDownloadManagerTest.java
@@ -38,7 +38,8 @@
 import org.apache.maven.wagon.events.TransferListener;
 import org.apache.maven.wagon.proxy.ProxyInfo;
 import org.apache.maven.wagon.repository.Repository;
-import org.codehaus.plexus.PlexusTestCase;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import static org.easymock.EasyMock.anyObject;
 import static org.easymock.EasyMock.anyString;
@@ -47,24 +48,29 @@
 import static org.easymock.EasyMock.expectLastCall;
 import static org.easymock.EasyMock.replay;
 import static org.easymock.EasyMock.verify;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
-public class DefaultDownloadManagerTest extends PlexusTestCase {
+public class DefaultDownloadManagerTest {
 
     private WagonManager wagonManager;
 
     private Wagon wagon;
 
+    @BeforeEach
     public void setUp() throws Exception {
-        super.setUp();
-
         wagonManager = createMock(WagonManager.class);
         wagon = createMock(Wagon.class);
     }
 
+    @Test
     public void testShouldConstructWithNoParamsAndHaveNonNullMessageHolder() {
         new DefaultDownloadManager();
     }
 
+    @Test
     public void testShouldConstructWithWagonManager() {
         replay(wagonManager);
 
@@ -73,10 +79,7 @@ public void testShouldConstructWithWagonManager() {
         verify(wagonManager);
     }
 
-    public void testShouldLookupInstanceDefaultRoleHint() throws Exception {
-        lookup(DownloadManager.ROLE, DefaultDownloadManager.ROLE_HINT);
-    }
-
+    @Test
     public void testShouldFailToDownloadMalformedURL() {
         replay(wagonManager);
 
@@ -93,6 +96,7 @@ public void testShouldFailToDownloadMalformedURL() {
         verify(wagonManager);
     }
 
+    @Test
     public void testShouldDownloadFromTempFileWithNoTransferListeners() throws IOException, DownloadFailedException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -108,6 +112,7 @@ public void testShouldDownloadFromTempFileWithNoTransferListeners() throws IOExc
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldDownloadFromTempFileTwiceAndUseCache() throws IOException, DownloadFailedException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -131,6 +136,7 @@ public void testShouldDownloadFromTempFileTwiceAndUseCache() throws IOException,
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldDownloadFromTempFileWithOneTransferListener() throws IOException, DownloadFailedException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -155,6 +161,7 @@ public void testShouldDownloadFromTempFileWithOneTransferListener() throws IOExc
         verify(wagon, wagonManager, transferListener);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonProtocolNotFound() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -176,6 +183,7 @@ public void testShouldFailToDownloadWhenWagonProtocolNotFound() throws IOExcepti
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonConnectThrowsConnectionException() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -197,6 +205,7 @@ public void testShouldFailToDownloadWhenWagonConnectThrowsConnectionException()
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonConnectThrowsAuthenticationException() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -218,6 +227,7 @@ public void testShouldFailToDownloadWhenWagonConnectThrowsAuthenticationExceptio
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonGetThrowsTransferFailedException() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -239,6 +249,7 @@ public void testShouldFailToDownloadWhenWagonGetThrowsTransferFailedException()
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonGetThrowsResourceDoesNotExistException() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -260,6 +271,7 @@ public void testShouldFailToDownloadWhenWagonGetThrowsResourceDoesNotExistExcept
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonGetThrowsAuthorizationException() throws IOException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
         tempFile.deleteOnExit();
@@ -281,6 +293,7 @@ public void testShouldFailToDownloadWhenWagonGetThrowsAuthorizationException() t
         verify(wagon, wagonManager);
     }
 
+    @Test
     public void testShouldFailToDownloadWhenWagonDisconnectThrowsConnectionException()
             throws IOException, DownloadFailedException {
         File tempFile = Files.createTempFile("download-source", "test").toFile();
diff --git a/src/test/java/org/apache/maven/shared/io/download/DownloadFailedExceptionTest.java b/src/test/java/org/apache/maven/shared/io/download/DownloadFailedExceptionTest.java
index c6a263e..ec75642 100644
--- a/src/test/java/org/apache/maven/shared/io/download/DownloadFailedExceptionTest.java
+++ b/src/test/java/org/apache/maven/shared/io/download/DownloadFailedExceptionTest.java
@@ -18,18 +18,23 @@
  */
 package org.apache.maven.shared.io.download;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
-public class DownloadFailedExceptionTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
+public class DownloadFailedExceptionTest {
+
+    @Test
     public void testShouldConstructWithUrlAndMessage() {
         new DownloadFailedException("http://www.google.com", "can't find.");
     }
 
+    @Test
     public void testShouldConstructWithUrlMessageAndException() {
         new DownloadFailedException("http://www.google.com", "can't find.", new NullPointerException());
     }
 
+    @Test
     public void testShouldRetrieveUrlFromConstructor() {
         String url = "http://www.google.com";
         assertEquals(url, new DownloadFailedException(url, "can't find.").getUrl());
diff --git a/src/test/java/org/apache/maven/shared/io/location/ArtifactLocationTest.java b/src/test/java/org/apache/maven/shared/io/location/ArtifactLocationTest.java
index be7e198..654fd42 100644
--- a/src/test/java/org/apache/maven/shared/io/location/ArtifactLocationTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/ArtifactLocationTest.java
@@ -22,15 +22,19 @@
 import java.io.IOException;
 import java.nio.file.Files;
 
-import junit.framework.TestCase;
 import org.apache.commons.io.FileUtils;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.DefaultArtifact;
 import org.apache.maven.artifact.handler.DefaultArtifactHandler;
 import org.apache.maven.artifact.versioning.VersionRange;
+import org.junit.jupiter.api.Test;
 
-public class ArtifactLocationTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertSame;
 
+public class ArtifactLocationTest {
+
+    @Test
     public void testShouldConstructFromTempFileSpecification() throws IOException {
         File f = Files.createTempFile("artifact-location.", ".test").toFile();
         f.deleteOnExit();
@@ -51,6 +55,7 @@ public void testShouldConstructFromTempFileSpecification() throws IOException {
         assertSame(f, location.getFile());
     }
 
+    @Test
     public void testShouldRead() throws IOException {
         File f = Files.createTempFile("url-location.", ".test").toFile();
         f.deleteOnExit();
diff --git a/src/test/java/org/apache/maven/shared/io/location/ArtifactLocatorStrategyTest.java b/src/test/java/org/apache/maven/shared/io/location/ArtifactLocatorStrategyTest.java
index e0be807..1675679 100644
--- a/src/test/java/org/apache/maven/shared/io/location/ArtifactLocatorStrategyTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/ArtifactLocatorStrategyTest.java
@@ -23,7 +23,6 @@
 import java.nio.file.Files;
 import java.util.Collections;
 
-import junit.framework.TestCase;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.factory.ArtifactFactory;
 import org.apache.maven.artifact.repository.ArtifactRepository;
@@ -32,10 +31,13 @@
 import org.apache.maven.artifact.resolver.ArtifactResolver;
 import org.apache.maven.shared.io.logging.DefaultMessageHolder;
 import org.apache.maven.shared.io.logging.MessageHolder;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import static org.easymock.EasyMock.*;
+import static org.junit.jupiter.api.Assertions.*;
 
-public class ArtifactLocatorStrategyTest extends TestCase {
+public class ArtifactLocatorStrategyTest {
 
     private ArtifactFactory factory;
 
@@ -43,12 +45,14 @@ public class ArtifactLocatorStrategyTest extends TestCase {
 
     private ArtifactRepository localRepository;
 
+    @BeforeEach
     public void setUp() {
         factory = createMock(ArtifactFactory.class);
         resolver = createMock(ArtifactResolver.class);
         localRepository = createMock(ArtifactRepository.class);
     }
 
+    @Test
     public void testShouldConstructWithoutDefaultArtifactType() {
         replay(factory, resolver, localRepository);
 
@@ -57,6 +61,7 @@ public void testShouldConstructWithoutDefaultArtifactType() {
         verify(factory, resolver, localRepository);
     }
 
+    @Test
     public void testShouldConstructWithDefaultArtifactType() {
         replay(factory, resolver, localRepository);
 
@@ -65,6 +70,7 @@ public void testShouldConstructWithDefaultArtifactType() {
         verify(factory, resolver, localRepository);
     }
 
+    @Test
     public void testShouldFailToResolveSpecWithOneToken() {
         replay(factory, resolver, localRepository);
 
@@ -80,6 +86,7 @@ public void testShouldFailToResolveSpecWithOneToken() {
         verify(factory, resolver, localRepository);
     }
 
+    @Test
     public void testShouldFailToResolveSpecWithTwoTokens() {
         replay(factory, resolver, localRepository);
 
@@ -95,6 +102,7 @@ public void testShouldFailToResolveSpecWithTwoTokens() {
         verify(factory, resolver, localRepository);
     }
 
+    @Test
     public void testShouldResolveSpecWithThreeTokensUsingDefaultType() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -133,6 +141,7 @@ public void testShouldResolveSpecWithThreeTokensUsingDefaultType() throws IOExce
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldResolveSpecWithThreeTokensUsingCustomizedDefaultType() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -171,6 +180,7 @@ public void testShouldResolveSpecWithThreeTokensUsingCustomizedDefaultType() thr
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldResolveSpecWithFourTokens() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -209,6 +219,7 @@ public void testShouldResolveSpecWithFourTokens() throws IOException {
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldResolveSpecWithFiveTokens() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -247,6 +258,7 @@ public void testShouldResolveSpecWithFiveTokens() throws IOException {
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldResolveSpecWithFiveTokensAndEmptyTypeToken() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -285,6 +297,7 @@ public void testShouldResolveSpecWithFiveTokensAndEmptyTypeToken() throws IOExce
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldResolveSpecWithMoreThanFiveTokens() throws IOException {
         File tempFile = Files.createTempFile("artifact-location.", ".temp").toFile();
         tempFile.deleteOnExit();
@@ -325,6 +338,7 @@ public void testShouldResolveSpecWithMoreThanFiveTokens() throws IOException {
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldNotResolveSpecToArtifactWithNullFile() throws IOException {
         Artifact artifact = createMock(Artifact.class);
 
@@ -360,6 +374,7 @@ public void testShouldNotResolveSpecToArtifactWithNullFile() throws IOException
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldNotResolveWhenArtifactNotFoundExceptionThrown() throws IOException {
         Artifact artifact = createMock(Artifact.class);
 
@@ -407,6 +422,7 @@ public void testShouldNotResolveWhenArtifactNotFoundExceptionThrown() throws IOE
         verify(factory, resolver, localRepository, artifact);
     }
 
+    @Test
     public void testShouldNotResolveWhenArtifactResolutionExceptionThrown() throws IOException {
         Artifact artifact = createMock(Artifact.class);
 
diff --git a/src/test/java/org/apache/maven/shared/io/location/ClasspathResourceLocatorStrategyTest.java b/src/test/java/org/apache/maven/shared/io/location/ClasspathResourceLocatorStrategyTest.java
index e6d26a3..ab0fff3 100644
--- a/src/test/java/org/apache/maven/shared/io/location/ClasspathResourceLocatorStrategyTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/ClasspathResourceLocatorStrategyTest.java
@@ -18,20 +18,25 @@
  */
 package org.apache.maven.shared.io.location;
 
-import junit.framework.TestCase;
 import org.apache.maven.shared.io.logging.DefaultMessageHolder;
 import org.apache.maven.shared.io.logging.MessageHolder;
+import org.junit.jupiter.api.Test;
 
-public class ClasspathResourceLocatorStrategyTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
 
+public class ClasspathResourceLocatorStrategyTest {
+
+    @Test
     public void testShouldConstructWithNoParams() {
         new ClasspathResourceLocatorStrategy();
     }
 
+    @Test
     public void testShouldConstructWithTempFileOptions() {
         new ClasspathResourceLocatorStrategy("prefix.", ".suffix", true);
     }
 
+    @Test
     public void testShouldFailToResolveMissingClasspathResource() {
         MessageHolder mh = new DefaultMessageHolder();
         Location location = new ClasspathResourceLocatorStrategy().resolve("/some/missing/path", mh);
@@ -40,6 +45,7 @@ public void testShouldFailToResolveMissingClasspathResource() {
         assertEquals(1, mh.size());
     }
 
+    @Test
     public void testShouldResolveExistingClasspathResourceWithoutPrecedingSlash() {
         MessageHolder mh = new DefaultMessageHolder();
         Location location = new ClasspathResourceLocatorStrategy().resolve("META-INF/maven/test.properties", mh);
diff --git a/src/test/java/org/apache/maven/shared/io/location/FileLocationTest.java b/src/test/java/org/apache/maven/shared/io/location/FileLocationTest.java
index b211dbf..fec84ef 100644
--- a/src/test/java/org/apache/maven/shared/io/location/FileLocationTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/FileLocationTest.java
@@ -25,12 +25,15 @@
 import java.nio.ByteBuffer;
 import java.nio.file.Files;
 
-import junit.framework.TestCase;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
+import org.junit.jupiter.api.Test;
 
-public class FileLocationTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
 
+public class FileLocationTest {
+
+    @Test
     public void testShouldConstructWithFileThenRetrieveSameFile() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -41,6 +44,7 @@ public void testShouldConstructWithFileThenRetrieveSameFile() throws IOException
         assertEquals(file.getAbsolutePath(), location.getSpecification());
     }
 
+    @Test
     public void testShouldReadFileContentsUsingByteBuffer() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -59,6 +63,7 @@ public void testShouldReadFileContentsUsingByteBuffer() throws IOException {
         assertEquals(testStr, new String(buffer.array(), "US-ASCII"));
     }
 
+    @Test
     public void testShouldReadFileContentsUsingStream() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -79,6 +84,7 @@ public void testShouldReadFileContentsUsingStream() throws IOException {
         }
     }
 
+    @Test
     public void testShouldReadFileContentsUsingByteArray() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -97,6 +103,7 @@ public void testShouldReadFileContentsUsingByteArray() throws IOException {
         assertEquals(testStr, new String(buffer, "US-ASCII"));
     }
 
+    @Test
     public void testShouldReadThenClose() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -117,6 +124,7 @@ public void testShouldReadThenClose() throws IOException {
         location.close();
     }
 
+    @Test
     public void testShouldOpenThenFailToSetFile() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -133,6 +141,7 @@ public void testShouldOpenThenFailToSetFile() throws IOException {
         }
     }
 
+    @Test
     public void testShouldConstructWithoutFileThenSetFileThenOpen() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
@@ -143,6 +152,7 @@ public void testShouldConstructWithoutFileThenSetFileThenOpen() throws IOExcepti
         location.open();
     }
 
+    @Test
     public void testShouldConstructWithLocationThenRetrieveEquivalentFile() throws IOException {
         File file = Files.createTempFile("test.", ".file-location").toFile();
         file.deleteOnExit();
diff --git a/src/test/java/org/apache/maven/shared/io/location/FileLocatorStrategyTest.java b/src/test/java/org/apache/maven/shared/io/location/FileLocatorStrategyTest.java
index 83d2b95..2d5c82a 100644
--- a/src/test/java/org/apache/maven/shared/io/location/FileLocatorStrategyTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/FileLocatorStrategyTest.java
@@ -22,12 +22,15 @@
 import java.io.IOException;
 import java.nio.file.Files;
 
-import junit.framework.TestCase;
 import org.apache.maven.shared.io.logging.DefaultMessageHolder;
 import org.apache.maven.shared.io.logging.MessageHolder;
+import org.junit.jupiter.api.Test;
 
-public class FileLocatorStrategyTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
 
+public class FileLocatorStrategyTest {
+
+    @Test
     public void testShouldResolveExistingTempFileLocation() throws IOException {
         File f = Files.createTempFile("file-locator.", ".test").toFile();
         f.deleteOnExit();
@@ -45,6 +48,7 @@ public void testShouldResolveExistingTempFileLocation() throws IOException {
         assertEquals(f, location.getFile());
     }
 
+    @Test
     public void testShouldFailToResolveNonExistentFileLocation() throws IOException {
         File f = Files.createTempFile("file-locator.", ".test").toFile();
         f.delete();
diff --git a/src/test/java/org/apache/maven/shared/io/location/LocatorTest.java b/src/test/java/org/apache/maven/shared/io/location/LocatorTest.java
index 6ce410c..b14d591 100644
--- a/src/test/java/org/apache/maven/shared/io/location/LocatorTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/LocatorTest.java
@@ -22,22 +22,26 @@
 import java.util.Collections;
 import java.util.List;
 
-import junit.framework.TestCase;
 import org.apache.maven.shared.io.logging.DefaultMessageHolder;
 import org.apache.maven.shared.io.logging.MessageHolder;
+import org.junit.jupiter.api.Test;
 
 import static org.easymock.EasyMock.*;
+import static org.junit.jupiter.api.Assertions.*;
 
-public class LocatorTest extends TestCase {
+public class LocatorTest {
 
+    @Test
     public void testShouldConstructWithNoParams() {
         new Locator();
     }
 
+    @Test
     public void testShouldConstructWithStrategyStackAndMessageHolder() {
         new Locator(Collections.<LocatorStrategy>emptyList(), new DefaultMessageHolder());
     }
 
+    @Test
     public void testShouldAllowModificationOfStrategiesAfterConstructionWithUnmodifiableStack() {
         Locator locator = new Locator(
                 Collections.unmodifiableList(Collections.<LocatorStrategy>emptyList()), new DefaultMessageHolder());
@@ -47,10 +51,12 @@ public void testShouldAllowModificationOfStrategiesAfterConstructionWithUnmodifi
         assertEquals(1, locator.getStrategies().size());
     }
 
+    @Test
     public void testShouldRetrieveNonNullMessageHolderWhenConstructedWithoutParams() {
         assertNotNull(new Locator().getMessageHolder());
     }
 
+    @Test
     public void testSetStrategiesShouldClearAnyPreExistingStrategiesOut() {
         LocatorStrategy originalStrategy = createMock(LocatorStrategy.class);
         LocatorStrategy replacementStrategy = createMock(LocatorStrategy.class);
@@ -70,6 +76,7 @@ public void testSetStrategiesShouldClearAnyPreExistingStrategiesOut() {
         verify(originalStrategy, replacementStrategy);
     }
 
+    @Test
     public void testShouldRemovePreviouslyAddedStrategy() {
         LocatorStrategy originalStrategy = createMock(LocatorStrategy.class);
 
@@ -91,6 +98,7 @@ public void testShouldRemovePreviouslyAddedStrategy() {
         verify(originalStrategy);
     }
 
+    @Test
     public void testResolutionFallsThroughStrategyStackAndReturnsNullIfNotResolved() {
         List<LocatorStrategy> strategies = new ArrayList<>();
 
diff --git a/src/test/java/org/apache/maven/shared/io/location/URLLocationTest.java b/src/test/java/org/apache/maven/shared/io/location/URLLocationTest.java
index 9575eb6..c74e145 100644
--- a/src/test/java/org/apache/maven/shared/io/location/URLLocationTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/URLLocationTest.java
@@ -23,11 +23,14 @@
 import java.net.URL;
 import java.nio.file.Files;
 
-import junit.framework.TestCase;
 import org.apache.commons.io.FileUtils;
+import org.junit.jupiter.api.Test;
 
-public class URLLocationTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
 
+public class URLLocationTest {
+
+    @Test
     public void testShouldConstructFromUrlAndTempFileSpecifications() throws IOException {
         File f = Files.createTempFile("url-location.", ".test").toFile();
         f.deleteOnExit();
@@ -37,6 +40,7 @@ public void testShouldConstructFromUrlAndTempFileSpecifications() throws IOExcep
         new URLLocation(url, f.getAbsolutePath(), "prefix.", ".suffix", true);
     }
 
+    @Test
     public void testShouldTransferFromTempFile() throws IOException {
         File f = Files.createTempFile("url-location.", ".test").toFile();
         f.deleteOnExit();
@@ -49,6 +53,7 @@ public void testShouldTransferFromTempFile() throws IOException {
         assertFalse(f.equals(location.getFile()));
     }
 
+    @Test
     public void testShouldTransferFromTempFileThenRead() throws IOException {
         File f = Files.createTempFile("url-location.", ".test").toFile();
         f.deleteOnExit();
diff --git a/src/test/java/org/apache/maven/shared/io/location/URLLocatorStrategyTest.java b/src/test/java/org/apache/maven/shared/io/location/URLLocatorStrategyTest.java
index 8cb0c37..e3f81d2 100644
--- a/src/test/java/org/apache/maven/shared/io/location/URLLocatorStrategyTest.java
+++ b/src/test/java/org/apache/maven/shared/io/location/URLLocatorStrategyTest.java
@@ -22,21 +22,26 @@
 import java.io.IOException;
 import java.nio.file.Files;
 
-import junit.framework.TestCase;
 import org.apache.commons.io.FileUtils;
 import org.apache.maven.shared.io.logging.DefaultMessageHolder;
 import org.apache.maven.shared.io.logging.MessageHolder;
+import org.junit.jupiter.api.Test;
 
-public class URLLocatorStrategyTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
 
+public class URLLocatorStrategyTest {
+
+    @Test
     public void testShouldConstructWithNoParams() {
         new URLLocatorStrategy();
     }
 
+    @Test
     public void testShouldConstructWithTempFileOptions() {
         new URLLocatorStrategy("prefix.", ".suffix", true);
     }
 
+    @Test
     public void testShouldFailToResolveWithMalformedUrl() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -46,6 +51,7 @@ public void testShouldFailToResolveWithMalformedUrl() {
         assertEquals(1, mh.size());
     }
 
+    @Test
     public void testShouldResolveUrlForTempFile() throws IOException {
         File tempFile = Files.createTempFile("prefix.", ".suffix").toFile();
         tempFile.deleteOnExit();
diff --git a/src/test/java/org/apache/maven/shared/io/logging/DefaultMessageHolderTest.java b/src/test/java/org/apache/maven/shared/io/logging/DefaultMessageHolderTest.java
index ea20898..e06fba1 100644
--- a/src/test/java/org/apache/maven/shared/io/logging/DefaultMessageHolderTest.java
+++ b/src/test/java/org/apache/maven/shared/io/logging/DefaultMessageHolderTest.java
@@ -21,13 +21,16 @@
 import java.io.PrintWriter;
 import java.io.StringWriter;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
-public class DefaultMessageHolderTest extends TestCase {
+import static org.junit.jupiter.api.Assertions.*;
+
+public class DefaultMessageHolderTest {
 
     // MessageHolder newMessage();
     // int size();
     // String render();
+    @Test
     public void testNewMessageIncrementsSizeWhenEmpty() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -45,6 +48,7 @@ public void testNewMessageIncrementsSizeWhenEmpty() {
     // MessageHolder append( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testAppendCreatesNewMessageIfNoneCurrent() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -62,6 +66,7 @@ public void testAppendCreatesNewMessageIfNoneCurrent() {
     // MessageHolder append( Throwable error );
     // int size();
     // String render();
+    @Test
     public void testAppendErrorCreatesNewMessageIfNoneCurrent() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -87,6 +92,7 @@ public void testAppendErrorCreatesNewMessageIfNoneCurrent() {
     // MessageHolder append( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testNewMessageThenAppendOnlyIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -110,6 +116,7 @@ public void testNewMessageThenAppendOnlyIncrementsSizeByOne() {
     // MessageHolder append( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testNewMessageThenAppendTwiceOnlyIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -137,6 +144,7 @@ public void testNewMessageThenAppendTwiceOnlyIncrementsSizeByOne() {
     // MessageHolder append( Throwable error );
     // int size();
     // String render();
+    @Test
     public void testNewMessageThenAppendBothMessageAndErrorOnlyIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -169,6 +177,7 @@ public void testNewMessageThenAppendBothMessageAndErrorOnlyIncrementsSizeByOne()
     // MessageHolder addMessage( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testAddMessageIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
         MessageHolder check = mh.addMessage("test");
@@ -182,6 +191,7 @@ public void testAddMessageIncrementsSizeByOne() {
     // MessageHolder addMessage( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testAddMessageTwiceIncrementsSizeByTwo() {
         MessageHolder mh = new DefaultMessageHolder();
         MessageHolder check = mh.addMessage("test");
@@ -199,6 +209,7 @@ public void testAddMessageTwiceIncrementsSizeByTwo() {
     // MessageHolder addMessage( CharSequence messagePart, Throwable error );
     // int size();
     // String render();
+    @Test
     public void testAddMessageWithErrorIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -222,6 +233,7 @@ public void testAddMessageWithErrorIncrementsSizeByOne() {
     // MessageHolder addMessage( CharSequence messagePart );
     // int size();
     // String render();
+    @Test
     public void testAddMessageWithErrorThenWithJustMessageIncrementsSizeByTwo() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -248,6 +260,7 @@ public void testAddMessageWithErrorThenWithJustMessageIncrementsSizeByTwo() {
     // MessageHolder addMessage( Throwable error );
     // int size();
     // String render();
+    @Test
     public void testAddMessageWithJustErrorIncrementsSizeByOne() {
         MessageHolder mh = new DefaultMessageHolder();
 
@@ -268,15 +281,18 @@ public void testAddMessageWithJustErrorIncrementsSizeByOne() {
     }
 
     // boolean isEmpty();
+    @Test
     public void testIsEmptyAfterConstruction() {
         assertTrue(new DefaultMessageHolder().isEmpty());
     }
 
     // boolean isEmpty();
+    @Test
     public void testIsNotEmptyAfterConstructionAndNewMessageCall() {
         assertFalse(new DefaultMessageHolder().newMessage().isEmpty());
     }
 
+    @Test
     public void testAppendCharSequence() {
         MessageHolder mh = new DefaultMessageHolder();
         mh.newMessage().append(new StringBuffer("This is a test"));
diff --git a/src/test/java/org/apache/maven/shared/io/scan/SimpleResourceInclusionScannerTest.java b/src/test/java/org/apache/maven/shared/io/scan/SimpleResourceInclusionScannerTest.java
index 6e4ea99..9022121 100644
--- a/src/test/java/org/apache/maven/shared/io/scan/SimpleResourceInclusionScannerTest.java
+++ b/src/test/java/org/apache/maven/shared/io/scan/SimpleResourceInclusionScannerTest.java
@@ -25,10 +25,10 @@
 import java.util.Set;
 
 import org.apache.maven.shared.io.scan.mapping.SuffixMapping;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * @author dengliming
diff --git a/src/test/java/org/apache/maven/shared/io/scan/mapping/SuffixMappingTest.java b/src/test/java/org/apache/maven/shared/io/scan/mapping/SuffixMappingTest.java
index 461aeb6..e97e26d 100644
--- a/src/test/java/org/apache/maven/shared/io/scan/mapping/SuffixMappingTest.java
+++ b/src/test/java/org/apache/maven/shared/io/scan/mapping/SuffixMappingTest.java
@@ -23,10 +23,10 @@
 import java.util.Set;
 
 import org.apache.maven.shared.io.scan.InclusionScanException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * @author jdcasey
@@ -42,12 +42,9 @@ public void testShouldReturnSingleClassFileForSingleJavaFile() throws InclusionS
 
         Set<File> results = mapping.getTargetFiles(basedir, base + ".java");
 
-        assertEquals("Returned wrong number of target files.", 1, results.size());
+        assertEquals(1, results.size(), "Returned wrong number of target files.");
 
-        assertEquals(
-                "Target file is wrong.",
-                new File(basedir, base + ".class"),
-                results.iterator().next());
+        assertEquals(new File(basedir, base + ".class"), results.iterator().next(), "Target file is wrong.");
     }
 
     @Test
@@ -60,7 +57,7 @@ public void testShouldNotReturnClassFileWhenSourceFileHasWrongSuffix() throws In
 
         Set<File> results = mapping.getTargetFiles(basedir, base + ".xml");
 
-        assertTrue("Returned wrong number of target files.", results.isEmpty());
+        assertTrue(results.isEmpty(), "Returned wrong number of target files.");
     }
 
     @Test
@@ -77,11 +74,11 @@ public void testShouldReturnOneClassFileAndOneXmlFileForSingleJavaFile() throws
 
         Set<File> results = mapping.getTargetFiles(basedir, base + ".java");
 
-        assertEquals("Returned wrong number of target files.", 2, results.size());
+        assertEquals(2, results.size(), "Returned wrong number of target files.");
 
-        assertTrue("Targets do not contain class target.", results.contains(new File(basedir, base + ".class")));
+        assertTrue(results.contains(new File(basedir, base + ".class")), "Targets do not contain class target.");
 
-        assertTrue("Targets do not contain class target.", results.contains(new File(basedir, base + ".xml")));
+        assertTrue(results.contains(new File(basedir, base + ".xml")), "Targets do not contain class target.");
     }
 
     @Test
@@ -98,7 +95,7 @@ public void testShouldReturnNoTargetFilesWhenSourceFileHasWrongSuffix() throws I
 
         Set<File> results = mapping.getTargetFiles(basedir, base + ".apt");
 
-        assertTrue("Returned wrong number of target files.", results.isEmpty());
+        assertTrue(results.isEmpty(), "Returned wrong number of target files.");
     }
 
     @Test