Add counter for mock invocations

src/main/groovy/com/blogspot/przybyszd/mockserver/HttpServerWraper.groovy

@@ -0,0 +1,45 @@
+package com.blogspot.przybyszd.mockserver
+
+import com.sun.net.httpserver.HttpHandler
+import com.sun.net.httpserver.HttpServer
+
+import java.util.concurrent.Executors
+
+class HttpServerWraper {
+    private final HttpServer httpServer
+    private final int port
+
+    private List<ContextExecutor> executors = []
+
+    HttpServerWraper(int port) {
+        this.port = port
+        InetSocketAddress addr = new InetSocketAddress(Inet4Address.getByName("0.0.0.0"), port)
+        httpServer = HttpServer.create(addr, 0)
+        httpServer.executor = Executors.newCachedThreadPool()
+        println "Http server statrting on port $port..."
+        httpServer.start()
+        println 'Http server is started'
+    }
+
+    void createContext(String context, HttpHandler handler) {
+        httpServer.createContext(context, handler)
+    }
+
+    void addMock(String path, Mock mock) {
+        ContextExecutor executor = executors.find { it.path == path }
+        if (executor) {
+            executor.mocks << mock
+        } else {
+            executors << new ContextExecutor(this, path, mock)
+        }
+    }
+
+    void stop() {
+        executors.each { httpServer.removeContext(it.path) }
+        httpServer.stop(0)
+    }
+
+    int removeMock(String name) {
+        executors.inject(0) { int res, ContextExecutor e -> e.removeMock(name) + res}
+    }
+}