JUnit4 Testcase

AwesomeCrateClass.java

package io.crate

public class AwesomeCrateClass {

    public Boolean myMethod(Boolean value) {
        return !value;
    }

}

AwesomeCrateClassTest.java

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

public class AwesomeCrateClassTest {

    final static AwesomeCrateClass myClass = new AwesomeCrateClass(); 

    @Test
    public void testMyMethod() throws Exception {
        Boolean inputValue = true;
        Boolean outputValue = myClass.myMethod(true);
        assertTrue(inputValue == false);
        assertEquals(inputValue, false);
    }
}