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  package org.apache.cayenne.exp;
  
  import static org.junit.Assert.assertEquals;
  
  import java.util.Arrays;
  
  import org.junit.Before;
  import org.junit.Test;
  
  public class ExpressionTraversalTest {
  
  	private TstTraversalHandler handler;
  
  	@Before
  	public void setUp() throws Exception {
  		handler = new TstTraversalHandler();
  	}
  
  	@Test
  	public void testUnary_Negative1() {
  		doExpressionTest("-5", 1, 1);
  	}
  
  	@Test
  	public void testUnary_Negative2() {
  		doExpressionTest("-estimatedPrice", 2, 1);
  	}
  
  	@Test
  	public void testUnary_Negative3() {
  		doExpressionTest("-toGallery.paintingArray.estimatedPrice", 2, 1);
  	}
  
  	@Test
  	public void testBinary_In1() {
  		doExpressionTest("toGallery.galleryName in ('g1', 'g2', 'g3')", 3, 2);
  	}
  
  	@Test
  	public void testBinary_In2() {
  		Expression exp = ExpressionFactory.inExp("toGallery.galleryName", Arrays.asList("g1", "g2", "g3"));
  		doExpressionTest(exp, 3, 2);
  	}
  
  	@Test
  	public void testBinary_In3() {
  		Expression exp = ExpressionFactory.inExp("toGallery.galleryName", "g1", "g2", "g3");
  		doExpressionTest(exp, 3, 2);
  	}
  
  	@Test
  	public void testBinary_Like() {
  		doExpressionTest("toGallery.galleryName like 'a%'", 2, 2);
  	}
  
  	@Test
  	public void testBinary_LikeIgnoreCase() {
  		doExpressionTest("toGallery.galleryName likeIgnoreCase 'a%'", 2, 2);
  	}
  
  	@Test
  	public void testBinary_IsNull() {
  		doExpressionTest("toGallery.galleryName = null", 2, 2);
  	}
  
  	@Test
  	public void testBinary_IsNotNull() {
  		doExpressionTest("toGallery.galleryName != null", 2, 2);
  	}
  
  	@Test
  	public void testTernary_Between() {
  		doExpressionTest("estimatedPrice between 3000 and 15000", 2, 3);
  	}
  
  	private void doExpressionTest(String expression, int totalNodes, int totalLeaves) {
  		doExpressionTest(ExpressionFactory.exp(expression), totalNodes, totalLeaves);
  	}
  
  	private void doExpressionTest(Expression expression, int totalNodes, int totalLeaves) {
  		handler.reset();
  		expression.traverse(handler);
  
  		// assert statistics
  		handler.assertConsistency();
  		assertEquals(totalNodes, handler.getNodeCount());
  		assertEquals(totalLeaves, handler.getLeafs());
  	}
  }
  