diff --git a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestFutureRequestExecutionService.java b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestFutureRequestExecutionService.java
similarity index 96%
rename from httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestFutureRequestExecutionService.java
rename to httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestFutureRequestExecutionService.java
index 4b2137486..f7fd40617 100644
--- a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestFutureRequestExecutionService.java
+++ b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestFutureRequestExecutionService.java
@@ -24,7 +24,7 @@
  * <http://www.apache.org/>.
  *
  */
-package org.apache.hc.client5.http.impl.classic;
+package org.apache.hc.client5.testing.sync;
 
 import static org.hamcrest.MatcherAssert.assertThat;
 
@@ -43,6 +43,9 @@
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import org.apache.hc.client5.http.classic.methods.HttpGet;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.FutureRequestExecutionService;
+import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
 import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
 import org.apache.hc.client5.http.io.HttpClientConnectionManager;
 import org.apache.hc.client5.http.protocol.HttpClientContext;
diff --git a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestHttpClientBuilderInterceptors.java b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestHttpClientBuilderInterceptors.java
similarity index 64%
rename from httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestHttpClientBuilderInterceptors.java
rename to httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestHttpClientBuilderInterceptors.java
index 49fcecf21..1fda23f7a 100644
--- a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestHttpClientBuilderInterceptors.java
+++ b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/TestHttpClientBuilderInterceptors.java
@@ -24,68 +24,51 @@
  * <http://www.apache.org/>.
  *
  */
-package org.apache.hc.client5.http.impl.classic;
-
-import java.io.IOException;
+package org.apache.hc.client5.testing.sync;
 
 import org.apache.hc.client5.http.classic.methods.HttpPost;
-import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
-import org.apache.hc.client5.http.io.HttpClientConnectionManager;
+import org.apache.hc.client5.testing.sync.extension.ClientProtocolLevel;
+import org.apache.hc.client5.testing.sync.extension.TestClient;
 import org.apache.hc.core5.http.ClassicHttpRequest;
 import org.apache.hc.core5.http.Header;
-import org.apache.hc.core5.http.HttpException;
+import org.apache.hc.core5.http.HttpHost;
 import org.apache.hc.core5.http.HttpResponse;
-import org.apache.hc.core5.http.impl.bootstrap.HttpServer;
-import org.apache.hc.core5.http.impl.bootstrap.ServerBootstrap;
+import org.apache.hc.core5.http.URIScheme;
 import org.apache.hc.core5.http.io.entity.EntityUtils;
-import org.apache.hc.core5.io.CloseMode;
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 @SuppressWarnings("boxing") // test code
-public class TestHttpClientBuilderInterceptors {
+public class TestHttpClientBuilderInterceptors extends AbstractIntegrationTestBase {
 
-    private HttpServer localServer;
-    private String uri;
-    private CloseableHttpClient httpClient;
+    public TestHttpClientBuilderInterceptors() {
+        super(URIScheme.HTTP, ClientProtocolLevel.STANDARD);
+    }
 
     @BeforeEach
     public void before() throws Exception {
-        this.localServer = ServerBootstrap.bootstrap()
+        configureServer(bootstrap -> bootstrap
                 .register("/test", (request, response, context) -> {
                     final Header testInterceptorHeader = request.getHeader("X-Test-Interceptor");
                     if (testInterceptorHeader != null) {
                         response.setHeader(testInterceptorHeader);
                     }
                     response.setCode(200);
-                }).create();
-
-        this.localServer.start();
-        uri = "http://localhost:" + this.localServer.getLocalPort() + "/test";
-        final HttpClientConnectionManager cm = PoolingHttpClientConnectionManagerBuilder.create()
-                .setMaxConnPerRoute(5)
-                .build();
-        httpClient = HttpClientBuilder.create()
-                .setConnectionManager(cm)
+                }));
+        configureClient(builder -> builder
                 .addExecInterceptorLast("test-interceptor", (request, scope, chain) -> {
                     request.setHeader("X-Test-Interceptor", "active");
                     return chain.proceed(request, scope);
-                })
-                .build();
-    }
-
-    @AfterEach
-    public void after() throws Exception {
-        this.httpClient.close(CloseMode.IMMEDIATE);
-        this.localServer.stop();
+                }));
     }
 
     @Test
-    public void testAddExecInterceptorLastShouldBeExecuted() throws IOException, HttpException {
-        final ClassicHttpRequest request = new HttpPost(uri);
-        final HttpResponse response = httpClient.execute(request, httpResponse -> {
+    public void testAddExecInterceptorLastShouldBeExecuted() throws Exception {
+        final HttpHost httpHost = startServer();
+        final TestClient client = client();
+        final ClassicHttpRequest request = new HttpPost("/test");
+        final HttpResponse response = client.execute(httpHost, request, httpResponse -> {
             EntityUtils.consume(httpResponse.getEntity());
             return httpResponse;
         });
diff --git a/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/StandardTestClientBuilder.java b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/StandardTestClientBuilder.java
index 378737858..aac369e70 100644
--- a/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/StandardTestClientBuilder.java
+++ b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/StandardTestClientBuilder.java
@@ -33,6 +33,7 @@
 import org.apache.hc.client5.http.HttpRequestRetryStrategy;
 import org.apache.hc.client5.http.UserTokenHandler;
 import org.apache.hc.client5.http.auth.AuthSchemeFactory;
+import org.apache.hc.client5.http.classic.ExecChainHandler;
 import org.apache.hc.client5.http.config.ConnectionConfig;
 import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
 import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
@@ -137,6 +138,18 @@ public TestClientBuilder setRequestExecutor(final HttpRequestExecutor requestExe
         return this;
     }
 
+    @Override
+    public TestClientBuilder addExecInterceptorFirst(final String name, final ExecChainHandler interceptor) {
+        this.clientBuilder.addExecInterceptorFirst(name, interceptor);
+        return this;
+    }
+
+    @Override
+    public TestClientBuilder addExecInterceptorLast(final String name, final ExecChainHandler interceptor) {
+        this.clientBuilder.addExecInterceptorLast(name, interceptor);
+        return this;
+    }
+
     @Override
     public TestClient build() throws Exception {
         final HttpClientConnectionManager connectionManagerCopy = connectionManager != null ? connectionManager :
diff --git a/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/TestClientBuilder.java b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/TestClientBuilder.java
index 27a0381eb..7dec1ff92 100644
--- a/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/TestClientBuilder.java
+++ b/httpclient5-testing/src/test/java/org/apache/hc/client5/testing/sync/extension/TestClientBuilder.java
@@ -33,6 +33,7 @@
 import org.apache.hc.client5.http.HttpRequestRetryStrategy;
 import org.apache.hc.client5.http.UserTokenHandler;
 import org.apache.hc.client5.http.auth.AuthSchemeFactory;
+import org.apache.hc.client5.http.classic.ExecChainHandler;
 import org.apache.hc.client5.http.io.HttpClientConnectionManager;
 import org.apache.hc.core5.http.Header;
 import org.apache.hc.core5.http.HttpRequestInterceptor;
@@ -89,6 +90,14 @@ default TestClientBuilder setRequestExecutor(HttpRequestExecutor requestExec) {
         throw new UnsupportedOperationException("Operation not supported by " + getProtocolLevel());
     }
 
+    default TestClientBuilder addExecInterceptorFirst(String name, ExecChainHandler interceptor) {
+        throw new UnsupportedOperationException("Operation not supported by " + getProtocolLevel());
+    }
+
+    default TestClientBuilder  addExecInterceptorLast(String name, ExecChainHandler interceptor) {
+        throw new UnsupportedOperationException("Operation not supported by " + getProtocolLevel());
+    }
+
     TestClient build() throws Exception;
 
 }