Junit Test cases examples

package Com.Srini.Junit;

import static org.junit.Assert.*;

import org.junit.Test;

public class MyUnitTest {
@Test
   public void testConcatenate() {
       MyUnit myUnit = new MyUnit();

       String result = myUnit.concatenate("one", "two");

       assertEquals("onetwo", result);

   }
@Test
   public void testGetTheStringArray() {
       MyUnit myUnit = new MyUnit();

       String[] expectedArray = {"one", "two", "three"};

       String[] resultArray =  myUnit.getTheStringArray();

       assertArrayEquals(expectedArray, resultArray);
   }
@Test
   public void testGetTheBoolean() {
       MyUnit myUnit = new MyUnit();

       assertTrue (myUnit.getTheBoolean());

       assertFalse(myUnit.getTheBoolean());
   }

}

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package Com.Srini.Junit;

public class MyUnit {

public String concatenate(String one, String two){

        return one + two;

    }

public String[] getTheStringArray(){

String strArry[]={"one", "two", "three"};

return strArry;

}

public boolean getTheBoolean() {

// TODO Auto-generated method stub

return true;

}

}

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package Com.Srini.Junit;

import static org.junit.Assert.*;

import static org.hamcrest.CoreMatchers.*;

import org.junit.Test;

public class MyMatcherTest {

@Test

    public void testWithMatchers() {

        assertThat("this string", is("this string"));

        assertThat(123, is(123));

    }

}