Merge pull request #6352 from pcoates33/BAEL-2492

BAEL-2492 Using WireMock Scenarios

testing-modules/rest-testing/README.md

@@ -8,6 +8,7 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 ### Relevant Articles: 
 - [Test a REST API with Java](http://www.baeldung.com/integration-testing-a-rest-api)
 - [Introduction to WireMock](http://www.baeldung.com/introduction-to-wiremock)
+- [Using WireMock Scenarios](http://www.baeldung.com/using-wiremock-scenarios)
 - [REST API Testing with Cucumber](http://www.baeldung.com/cucumber-rest-api-testing)
 - [Testing a REST API with JBehave](http://www.baeldung.com/jbehave-rest-testing)
 - [REST API Testing with Karate](http://www.baeldung.com/karate-rest-api-testing)

testing-modules/rest-testing/pom.xml

@@ -159,7 +159,7 @@
         <!-- testing -->
         <rest-assured.version>2.9.0</rest-assured.version>
         <cucumber.version>1.2.5</cucumber.version>
-        <wiremock.version>2.4.1</wiremock.version>
+        <wiremock.version>2.21.0</wiremock.version>
         <karate.version>0.6.1</karate.version>
 
         <httpcore.version>4.4.5</httpcore.version>

testing-modules/rest-testing/src/test/java/com/baeldung/rest/wiremock/scenario/WireMockScenarioExampleIntegrationTest.java

@@ -0,0 +1,75 @@
+package com.baeldung.rest.wiremock.scenario;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+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 org.junit.Assert.assertEquals;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+import org.apache.http.HttpResponse;
+import org.apache.http.client.ClientProtocolException;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.junit.Rule;
+import org.junit.Test;
+
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import com.github.tomakehurst.wiremock.stubbing.Scenario;
+
+public class WireMockScenarioExampleIntegrationTest {
+    
+    private static final String THIRD_STATE = "third";
+    private static final String SECOND_STATE = "second";
+    private static final String TIP_01 = "finally block is not called when System.exit() is called in the try block";
+    private static final String TIP_02 = "keep your code clean";
+    private static final String TIP_03 = "use composition rather than inheritance";
+    private static final String TEXT_PLAIN = "text/plain";
+    
+    static int port = 9999;
+    
+    @Rule
+    public WireMockRule wireMockRule = new WireMockRule(port);
+    
+    @Test
+    public void changeStateOnEachCallTest() throws IOException {
+        createWireMockStub(Scenario.STARTED, SECOND_STATE, TIP_01);
+        createWireMockStub(SECOND_STATE, THIRD_STATE, TIP_02);
+        createWireMockStub(THIRD_STATE, Scenario.STARTED, TIP_03);
+        
+        assertEquals(TIP_01, nextTip());
+        assertEquals(TIP_02, nextTip());
+        assertEquals(TIP_03, nextTip());
+        assertEquals(TIP_01, nextTip());
+    }
+
+    private void createWireMockStub(String currentState, String nextState, String responseBody) {
+        stubFor(get(urlEqualTo("/java-tip"))
+            .inScenario("java tips")
+            .whenScenarioStateIs(currentState)
+            .willReturn(aResponse()
+                    .withStatus(200)
+                    .withHeader("Content-Type", TEXT_PLAIN)
+                    .withBody(responseBody))
+            .willSetStateTo(nextState)
+            );
+    }
+    
+    private String nextTip() throws ClientProtocolException, IOException {
+        CloseableHttpClient httpClient = HttpClients.createDefault();
+        HttpGet request = new HttpGet(String.format("http://localhost:%s/java-tip", port));
+        HttpResponse httpResponse = httpClient.execute(request);
+        return firstLineOfResponse(httpResponse);
+    }
+
+    private static String firstLineOfResponse(HttpResponse httpResponse) throws IOException {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent()))) {
+            return reader.readLine();
+        }
+    }
+    
+}