@@ -0,0 +1,45 @@
+package io.github.javaasasecondlanguage.chat.client;
+
+import okhttp3.*;
+
+import java.io.IOException;
+
+
+public class ChatClient {
+    private static final OkHttpClient client = new OkHttpClient();
+    private static final String PROTOCOL = "http://";
+    private static final String HOST = "localhost";
+    private static final String PORT = ":8080";
+
+    //POST host:port/chat/login?name=my_name
+    public static Response login(String name) throws IOException {
+        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
+        Request request = new Request.Builder()
+                .post(RequestBody.create(mediaType, ""))
+                .url(PROTOCOL + HOST + PORT + "/chat/login?name=" + name)
+                .build();
+
+        return client.newCall(request).execute();
+    }
+
+    //GET host:port/chat/chat
+    public static Response viewChat() throws IOException {
+        Request request = new Request.Builder()
+                .get()
+                .url(PROTOCOL + HOST + PORT + "/chat/chat")
+                .addHeader("host", HOST + PORT)
+                .build();
+        return client.newCall(request).execute();
+    }
+
+    //POST host:port/chat/say?name=my_name
+    //Body: "msg='my_message'"
+    public static Response say(String name, String msg) throws IOException {
+        throw new UnsupportedOperationException();
+    }
+
+    //GET host:port/chat/online
+    public static Response viewOnline() throws IOException {
+        throw new UnsupportedOperationException();
+    }
+}
@@ -1,4 +1,4 @@
-package io.github.javaasasecondlanguage.chat;
+package io.github.javaasasecondlanguage.chat.server;
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 
@@ -0,0 +1,49 @@
+package io.github.javaasasecondlanguage.chat;
+
+import io.github.javaasasecondlanguage.chat.client.ChatClient;
+import okhttp3.Response;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class ChatClientTest {
+    private static String MY_NAME_IN_CHAT = "I_CAN_COPY_PASTE";
+    private static String MY_MESSAGE_TO_CHAT = "SOMEONE_KILL_ME";
+
+    @Test
+    public void login() throws IOException {
+        Response response = ChatClient.login(MY_NAME_IN_CHAT);
+        System.out.println("[" + response + "]");
+        String body = response.body().string();
+        System.out.println();
+        assertTrue(response.code() == 200 || body.equals("Already logged in:("));
+    }
+
+    @Test
+    public void viewChat() throws IOException {
+        Response response = ChatClient.viewChat();
+        System.out.println("[" + response + "]");
+        System.out.println(response.body().string());
+        assertEquals(200, response.code());
+    }
+
+
+    @Test
+    public void viewOnline() throws IOException {
+        Response response = ChatClient.viewOnline();
+        System.out.println("[" + response + "]");
+        System.out.println(response.body().string());
+        assertEquals(200, response.code());
+    }
+
+    @Test
+    public void say() throws IOException {
+        Response response = ChatClient.say(MY_NAME_IN_CHAT, MY_MESSAGE_TO_CHAT);
+        System.out.println("[" + response + "]");
+        System.out.println(response.body().string());
+        assertEquals(200, response.code());
+    }
+}
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-package io.github.javaasasecondlanguage.chat;`
	`1`	`+package io.github.javaasasecondlanguage.chat.server;`
`2`	`2`
`3`	`3`	`import org.springframework.http.HttpStatus;`
`4`	`4`	`import org.springframework.http.MediaType;`