diff --git a/jetty-ee10/jetty-ee10-webapp/src/test/java/org/eclipse/jetty/ee10/webapp/WebAppClassLoaderTest.java b/jetty-ee10/jetty-ee10-webapp/src/test/java/org/eclipse/jetty/ee10/webapp/WebAppClassLoaderTest.java
index cdf5421ebb5..a02ca33d274 100644
--- a/jetty-ee10/jetty-ee10-webapp/src/test/java/org/eclipse/jetty/ee10/webapp/WebAppClassLoaderTest.java
+++ b/jetty-ee10/jetty-ee10-webapp/src/test/java/org/eclipse/jetty/ee10/webapp/WebAppClassLoaderTest.java
@@ -27,14 +27,18 @@ import java.util.List;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.toolchain.test.MavenTestingUtils;
 import org.eclipse.jetty.util.IO;
+import org.eclipse.jetty.util.component.LifeCycle;
+import org.eclipse.jetty.util.resource.FileSystemPool;
 import org.eclipse.jetty.util.resource.Resource;
 import org.eclipse.jetty.util.resource.ResourceFactory;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import static org.eclipse.jetty.toolchain.test.ExtraMatchers.ordered;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.contains;
+import static org.hamcrest.Matchers.empty;
 import static org.hamcrest.Matchers.is;
 import static org.hamcrest.Matchers.notNullValue;
 import static org.hamcrest.Matchers.nullValue;
@@ -53,11 +57,12 @@ public class WebAppClassLoaderTest
     @BeforeEach
     public void init() throws Exception
     {
+        assertThat(FileSystemPool.INSTANCE.mounts(), empty());
         this.testWebappDir = MavenTestingUtils.getProjectDirPath("src/test/webapp");
-        Resource webapp = ResourceFactory.root().newResource(testWebappDir);
 
         _context = new WebAppContext();
-        _context.setBaseResource(webapp.getPath());
+        Resource webapp = ResourceFactory.of(_context).newResource(testWebappDir);
+        _context.setBaseResource(webapp);
         _context.setContextPath("/test");
         _context.setExtraClasspath("src/test/resources/ext/*");
 
@@ -67,6 +72,15 @@ public class WebAppClassLoaderTest
         _loader.setName("test");
 
         _context.setServer(new Server());
+        LifeCycle.start(_context);
+    }
+
+    @AfterEach
+    public void tearDown()
+    {
+        IO.close(_loader);
+        LifeCycle.stop(_context);
+        assertThat(FileSystemPool.INSTANCE.mounts(), empty());
     }
 
     public void assertCanLoadClass(String clazz) throws ClassNotFoundException