test: Wiremock extension

pom.xml

@@ -27,6 +27,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
 
         <!-- dependencies -->
+        <wiremock.version>3.5.4</wiremock.version>
 
         <!-- plugins -->
         <jsonschema2pojo.version>1.2.1</jsonschema2pojo.version>
@@ -78,6 +79,12 @@
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.wiremock</groupId>
+            <artifactId>wiremock</artifactId>
+            <version>${wiremock.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/test/java/eu/ztsh/wymiana/WireMockExtension.java

@@ -0,0 +1,45 @@
+package eu.ztsh.wymiana;
+
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.github.tomakehurst.wiremock.client.WireMock;
+import org.junit.jupiter.api.extension.AfterEachCallback;
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.*;
+
+public class WireMockExtension implements BeforeAllCallback, AfterEachCallback, ExtensionContext.Store.CloseableResource {
+
+    public static final String baseUrl = "http://localhost:38080";
+
+    public static void response(String endpoint, int status, String body) {
+        configureFor(38080);
+        stubFor(get(urlEqualTo(endpoint)).willReturn(WireMock.status(status).withBody(body)));
+    }
+
+    public static void verifyGet(int count, String url) {
+        verify(exactly(count), getRequestedFor(urlEqualTo(url)));
+    }
+
+    private static final WireMockServer wireMockServer = new WireMockServer(38080);
+    private boolean started;
+
+    @Override
+    public void beforeAll(ExtensionContext extensionContext) throws Exception {
+        if (!started) {
+            wireMockServer.start();
+            started = true;
+        }
+    }
+    @Override
+    public void afterEach(ExtensionContext extensionContext) throws Exception {
+        wireMockServer.listAllStubMappings().getMappings().forEach(wireMockServer::removeStub);
+    }
+
+    @Override
+    public void close() throws Throwable {
+        wireMockServer.stop();
+    }
+
+
+}