feat(irs-api):[#344] Extract WireMockConfig to irs-testing

irs-testing/pom.xml

@@ -34,6 +34,7 @@
             </dependency>
         </dependencies>
     </dependencyManagement>
+
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -53,6 +54,10 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
         <!-- Update json-smart manually to avoid vulnerability CVE-2023-1370; can be removed after Spring updates their dependency -->
         <dependency>
             <groupId>net.minidev</groupId>

irs-testing/src/main/java/org/eclipse/tractusx/irs/testing/wiremock/WireMockConfig.java

@@ -0,0 +1,47 @@
+/********************************************************************************
+ * Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information regarding copyright ownership.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Apache License, Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ********************************************************************************/
+package org.eclipse.tractusx.irs.testing.wiremock;
+
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+
+import org.springframework.http.client.SimpleClientHttpRequestFactory;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Common configurations for Wiremock tests.
+ */
+public final class WireMockConfig {
+    private WireMockConfig() {
+    }
+
+    /**
+     * Configured RestTemplate which proxies all requests to the provided host / port.
+     *
+     * @param proxyServerHost the host where all requests will be proxied to
+     * @param httpPort        the port of the host where all requests will be proxied to
+     * @return the configured {@link RestTemplate}
+     */
+    public static RestTemplate restTemplateProxy(final String proxyServerHost, final int httpPort) {
+        final Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyServerHost, httpPort));
+        final SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
+        requestFactory.setProxy(proxy);
+        return new RestTemplate(requestFactory);
+    }
+}