remove utility classes (#1733)

* remove utility classes

* remove httpclient, extend http

* move code to core-java

libraries/src/test/java/com/baeldung/http/HttpRequestBuilderTest.java

@@ -1,40 +0,0 @@
-package com.baeldung.http;
-
-import org.junit.Test;
-import static org.junit.Assert.*;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import org.junit.Before;
-
-import java.io.IOException;
-
-public class HttpRequestBuilderTest {
-
-    private HttpRequestBuilder requestPerformer;
-
-    @Before
-    public void setup() {
-        requestPerformer = new HttpRequestBuilder();
-    }
-
-    @Test
-    public void whenGetRequest_thenOk() throws IOException {
-        HttpResponseWrapper response = requestPerformer.sendRequest("http://www.example.com", "GET", null, null);
-        assertEquals("status code incorrect", response.getStatus(), 200);
-        assertTrue("content incorrect", response.getContent()
-            .contains("Example Domain"));
-    }
-
-    @Test
-    public void whenPostRequest_thenOk() throws IOException {
-        Map<String, String> parameters = new HashMap<>();
-        parameters.put("param1", "val");
-        Map<String, String> properties = new HashMap<>();
-        properties.put("Content-Type", "application/json");
-        HttpResponseWrapper response = requestPerformer.sendRequest("http://www.example.com", "POST", parameters, properties);
-        assertEquals("status code incorrect", response.getStatus(), 200);
-    }
-
-}

libraries/src/test/java/com/baeldung/httpclient/HttpClientRequestBuilderTest.java

@@ -1,46 +0,0 @@
-package com.baeldung.httpclient;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import org.junit.Before;
-import org.junit.Test;
-
-import com.baeldung.http.HttpResponseWrapper;
-
-public class HttpClientRequestBuilderTest {
-    private HttpClientRequestBuilder requestBuilder;
-
-    @Before
-    public void setup() {
-        requestBuilder = new HttpClientRequestBuilder();
-    }
-
-    @Test
-    public void whenGetRequest_thenOk() {
-        Map<String, String> parameters = new HashMap<>();
-        parameters.put("param1", "val");
-        HttpResponseWrapper response = requestBuilder.sendGetRequest("http://www.example.com",parameters);
-        assertEquals("status code incorrect", response.getStatus(), 200);
-        assertTrue("content incorrect", response.getContent()
-            .contains("Example Domain"));
-    }
-
-    @Test
-    public void whenPostRequestWithParameters_thenOk() {
-        Map<String, String> parameters = new HashMap<>();
-        parameters.put("param1", "val");
-        HttpResponseWrapper response = requestBuilder.sendPostRequestWithParameters("http://www.example.com", parameters);
-        assertEquals("status code incorrect", response.getStatus(), 200);
-    }
-    
-    @Test
-    public void whenPostRequestWithJson_thenOk() {
-        String json = "{\"id\":\"1\"}";
-        HttpResponseWrapper response = requestBuilder.sendPostRequestWithJson("http://www.example.com",json);
-        assertEquals("status code incorrect", response.getStatus(), 200);
-    }
-}