NodeSetTest.java

/*
 * Copyright 2015 S. Webber
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.oakgp.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.oakgp.TestUtils.readNode;

import java.util.Arrays;
import java.util.Set;

import org.junit.Test;
import org.oakgp.node.Node;

public class NodeSetTest {
   @Test
   public void testAdd() {
      Set<Node> s = new NodeSet();

      Node n1 = readNode("(+ v0 (+ 3 1))");
      Node n2 = readNode("(+ v0 (- 7 3))");

      assertTrue(s.add(n1));
      assertFalse(s.add(n2));
      assertEquals(1, s.size());
      assertFalse(s.contains(n1));
      assertFalse(s.contains(n2));

      Node simplifiedVersion = readNode("(+ 4 v0)");
      assertTrue(s.contains(simplifiedVersion));
      assertFalse(s.add(simplifiedVersion));
      assertEquals(1, s.size());

      Node n3 = readNode("(* 4 v0)");
      Node n4 = readNode("(+ 5 v0)");
      assertTrue(s.add(n3));
      assertTrue(s.add(n4));

      assertTrue(s.contains(simplifiedVersion));
      assertTrue(s.contains(n3));
      assertTrue(s.contains(n4));
      assertEquals(3, s.size());
   }

   @Test
   public void testAddAll() {
      Node n1 = readNode("(+ (+ 3 1) v0)");
      Node n2 = readNode("(+ (- 7 3) v0)");
      Node n3 = readNode("(* 4 v0)");
      Node n4 = readNode("(+ 5 v0)");

      Set<Node> s = new NodeSet();
      s.addAll(Arrays.asList(n1, n2, n3, n4));

      Node simplifiedVersion = readNode("(+ 4 v0)");
      assertEquals(3, s.size());
      assertTrue(s.contains(simplifiedVersion));
      assertTrue(s.contains(n3));
      assertTrue(s.contains(n4));
   }
}