package lab.art;

import static org.junit.Assert.*;

import java.util.Random;

import org.junit.Test;

public class FromStringTester 
{
    @Test
    public void test() 
    {
	final int NUMBER = 100;

	Random random = new Random(System.currentTimeMillis());

	for (int n = 0; n < NUMBER; n++)
	{
	    try 
	    {
		Expression expression = Expressions.getRandom(random);
		String representation = expression.toString();
		assertEquals("toString method failed", representation, Expressions.fromString(representation).toString());
	    } 
	    catch (OutOfMemoryError | StackOverflowError e)
	    {
		System.out.println("Run tester again");
		System.exit(1);
	    }
	    catch (Exception e) 
	    {
		fail("toString method failed");
	    }
	}
    }

    @Test(expected=Exception.class)
    public void testException() throws Exception
    {
	Expressions.fromString("bla");
    }
}