codewars #53 FIXME: Hello (6kyu)

#53 FIXME: Hello

The code provided has a method hello which is supposed to show only those attributes which have been explicitly set. Furthermore, it is supposed to say them in the same order they were set.

But it's not working properly.

Notes

There are 3 attributes

name

age

sex ('M' or 'F')

When the same attribute is assigned multiple times the hello method shows it only once. If this happens the order depends on the first assignment of that attribute, but the value is from the last assignment.

Examples

Hello.

Hello. My name is Bob. I am 27. I am male.

Hello. I am 27. I am male. My name is Bob.

Hello. My name is Alice. I am female.

Hello. My name is Batman.

import static org.junit.Assert.assertEquals;
import java.util.LinkedHashMap;
import java.util.Map;
import org.junit.Test;	

public class Dinglemouse {

	  private Map<String, String> attrs = new LinkedHashMap<>(); // 순서 유지를 위해 LinkedMap 사용

	  public Dinglemouse() {
		  attrs.put("greeting", "Hello.");
	  }
	  
	  public Dinglemouse setAge(int age) {
		  attrs.put("age", String.format("I am %d.", age));
		  return this;
	  }
	  
	  public Dinglemouse setSex(char sex) {
		  attrs.put("sex", String.format("I am %s.", sex == 'M' ? "male" : "female"));
		  return this;
	  }
	  
	  public Dinglemouse setName(String name) {
		  attrs.put("name", String.format("My name is %s.", name));
		  return this;
	  }
	  
	  public String hello() {
		  return String.join(" ", attrs.values());
	  }
	  
	  @Test
	  public void testBatman() {
	    Dinglemouse dm = new Dinglemouse().setName("Batman");
	    String expected = "Hello. My name is Batman.";
	    assertEquals(expected, dm.hello());
	  }    

}