Merge pull request #8871 from kwoyke/JAVA-966-fix

JAVA-966: Use randomly generated and available port

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssured2IntegrationTest.java

@@ -17,8 +17,7 @@ import static io.restassured.RestAssured.with;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssured2IntegrationTest {
-    private static final int PORT = 8084;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/odds";
     private static final String APPLICATION_JSON = "application/json";
@@ -27,9 +26,11 @@ public class RestAssured2IntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
-        RestAssured.port = PORT;
+        RestAssured.port = port;
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_JSON)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredIntegrationTest.java

@@ -21,8 +21,7 @@ import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssuredIntegrationTest {
-    private static final int PORT = 8083;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/events?id=390";
     private static final String APPLICATION_JSON = "application/json";
@@ -31,9 +30,11 @@ public class RestAssuredIntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        RestAssured.port = PORT;
+        RestAssured.port = port;
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_JSON)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredXML2IntegrationTest.java

@@ -12,11 +12,11 @@ import static com.github.tomakehurst.wiremock.client.WireMock.get;
 import static com.github.tomakehurst.wiremock.client.WireMock.stubFor;
 import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
 import static io.restassured.RestAssured.get;
+import static io.restassured.RestAssured.port;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssuredXML2IntegrationTest {
-    private static final int PORT = 8082;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/teachers";
     private static final String APPLICATION_XML = "application/xml";
@@ -25,9 +25,11 @@ public class RestAssuredXML2IntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        RestAssured.port = PORT;
+        RestAssured.port = port;
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_XML)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredXMLIntegrationTest.java

@@ -17,8 +17,7 @@ import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.xml.HasXPath.hasXPath;
 
 public class RestAssuredXMLIntegrationTest {
-    private static final int PORT = 8081;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/employees";
     private static final String APPLICATION_XML = "application/xml";
@@ -27,9 +26,11 @@ public class RestAssuredXMLIntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
-        RestAssured.port = PORT;
+        RestAssured.port = port;
         stubFor(post(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_XML)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/Util.java

@@ -1,10 +1,15 @@
 package com.baeldung.restassured;
 
+import java.io.IOException;
 import java.io.InputStream;
+import java.net.ServerSocket;
+import java.util.Random;
 import java.util.Scanner;
 
 final class Util {
 
+    private static final int DEFAULT_PORT = 8069;
+
     private Util() {
     }
 
@@ -12,4 +17,22 @@ final class Util {
         Scanner s = new Scanner(is).useDelimiter("\\A");
         return s.hasNext() ? s.next() : "";
     }
+
+    static int getAvailablePort() {
+        return new Random()
+                .ints(6000, 9000)
+                .filter(Util::isFree)
+                .findFirst()
+                .orElse(DEFAULT_PORT);
+    }
+
+
+    private static boolean isFree(int port) {
+        try {
+            new ServerSocket(port).close();
+            return true;
+        } catch (IOException e) {
+            return false;
+        }
+    }
 }