NullTest.java

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package nginx.clojure;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

/**
 *
 * @author Matthias Mann
 */
public class NullTest  implements Runnable {

    Object result = "b";
    
    @Test
    public void testNull() {
        int count = 0;
        Coroutine co = new Coroutine(this);
        while(co.getState() != Coroutine.State.FINISHED) {
            ++count;
            co.run();
        }
        assertEquals(2, count);
        assertEquals("a", result);
    }
    
    public void run() throws SuspendExecution {
        result = getProperty();
    }
    
    private Object getProperty() throws SuspendExecution {
        Object x = null;
        
        Object y = getProtery("a");
        if(y != null) {
            x = y;
        }
        
        return x;
    }

    private Object getProtery(String string) throws SuspendExecution {
        Coroutine.yield();
        return string;
    }

}