The parameter order of assertEquals is wrong. The first parameter should be the expected one not the second parameter.

Duplicate ;-)

fix code style to java style instead of c (in java style curved brackets in same line as code block declaration)

add null checking case for tests (if null passed should return empty string)

remove oop tag from this kata because it is about simple string manipulations, not oop

Add more test cases incl random test cases.

The test class should be public. the top import was wrong.

Provided test cases don't compile.

Test case syntax errors.
Missing closing braces in initial solution code.

import org.Junit.Test - must be org.junit.Test

Testing class must be public

Add closing brackets to the initial solution.

JAVA:
The test case class has incorrect code(compile error)!

replace thetestcase with this code:

import static org.junit.Assert.*;
import org.junit.Test;

public class RobotTest {

@Test
 public void haha() throws Exception
 {
  Robot obj = new Robot();
  assertEquals(obj.reverse("emma"),"amme");
 }

 @Test
 public void hehe()throws Exception
 {
  Robot obj = new Robot();
  assertEquals(obj.reverse("Alphonse"),"esnohplA");
 }

}

I don't even know where to start with this one...

Issues

• Missing braces in the setup.

• Method reverse(String) is static but accessed in a non static way

• Given tests simply don't work.

• Add more final tests including random ones

Solutions

• Replace the given setup with:

public class Robot {
  public String reverse(String str) {
    // your awesome code
  }
}

• Replace the given tests with:

import static org.junit.Assert.assertEquals;

import org.junit.Test;
import org.junit.Before;
import org.junit.After;

public class RobotTest {
  
  Robot obj;
  
  @Before
  public void init() {
    obj = new Robot();
  }
  
  @After
  public void after() {
    obj = null;
  }
  
  @Test
  public void haha() {
    assertEquals(obj.reverse("emma"),"amme");
  }

  @Test
  public void hehe() {
    assertEquals(obj.reverse("Alphonse"),"esnohplA");
  }
}

• Add random tests to the final version.

The Test cases were giving weird errors. I submitted and it was rigth.

issue is pretty easy, main thing - make tests works