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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.predicate;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* @author Simon Thoresen Hult
*/
public class NegationTest {
@Test
public void requireThatNegationIsAnOperator() {
assertTrue(PredicateOperator.class.isAssignableFrom(Negation.class));
}
@Test
public void requireThatAccessorsWork() {
Predicate foo = SimplePredicates.newString("foo");
Negation node = new Negation(foo);
assertSame(foo, node.getOperand());
Predicate bar = SimplePredicates.newString("bar");
node.setOperand(bar);
assertSame(bar, node.getOperand());
}
@Test
public void requireThatCloneIsImplemented() throws CloneNotSupportedException {
Negation node1 = new Negation(SimplePredicates.newString("a"));
Negation node2 = node1.clone();
assertEquals(node1, node2);
assertNotSame(node1, node2);
assertNotSame(node1.getOperand(), node2.getOperand());
}
@Test
public void requireThatHashCodeIsImplemented() {
Predicate predicate = SimplePredicates.newPredicate();
assertEquals(new Negation(predicate).hashCode(), new Negation(predicate).hashCode());
}
@Test
public void requireThatEqualsIsImplemented() {
Negation lhs = new Negation(SimplePredicates.newString("foo"));
assertTrue(lhs.equals(lhs));
assertFalse(lhs.equals(new Object()));
Negation rhs = new Negation(SimplePredicates.newString("bar"));
assertFalse(lhs.equals(rhs));
rhs.setOperand(SimplePredicates.newString("foo"));
assertTrue(lhs.equals(rhs));
}
@Test
public void requireThatChildIsMandatoryInConstructor() {
try {
new Negation(null);
fail();
} catch (NullPointerException e) {
assertEquals("operand", e.getMessage());
}
}
@Test
public void requireThatChildIsMandatoryInSetter() {
Predicate operand = SimplePredicates.newPredicate();
Negation negation = new Negation(operand);
try {
negation.setOperand(null);
fail();
} catch (NullPointerException e) {
assertEquals("operand", e.getMessage());
}
assertSame(operand, negation.getOperand());
}
@Test
public void requireThatChildIsIncludedInToString() {
assertEquals("not (foo)", new Negation(SimplePredicates.newString("foo")).toString());
}
}
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