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// Copyright 2016 Yahoo Inc. 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 java.util.Arrays;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertTrue;
/**
* @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen Hult</a>
*/
public class ConjunctionTest {
@Test
public void requireThatConjunctionIsAnOperator() {
assertTrue(PredicateOperator.class.isAssignableFrom(Conjunction.class));
}
@Test
public void requireThatAccessorsWork() {
Conjunction node = new Conjunction();
Predicate a = SimplePredicates.newString("a");
node.addOperand(a);
assertEquals(Arrays.asList(a), node.getOperands());
Predicate b = SimplePredicates.newString("b");
node.addOperand(b);
assertEquals(Arrays.asList(a, b), node.getOperands());
Predicate c = SimplePredicates.newString("c");
Predicate d = SimplePredicates.newString("d");
node.addOperands(Arrays.asList(c, d));
assertEquals(Arrays.asList(a, b, c, d), node.getOperands());
Predicate e = SimplePredicates.newString("e");
Predicate f = SimplePredicates.newString("f");
node.setOperands(Arrays.asList(e, f));
assertEquals(Arrays.asList(e, f), node.getOperands());
}
@Test
public void requireThatConstructorsWork() {
Predicate foo = SimplePredicates.newString("foo");
Predicate bar = SimplePredicates.newString("bar");
Conjunction node = new Conjunction(foo, bar);
assertEquals(Arrays.asList(foo, bar), node.getOperands());
node = new Conjunction(Arrays.asList(foo, bar));
assertEquals(Arrays.asList(foo, bar), node.getOperands());
}
@Test
public void requireThatCloneIsImplemented() throws CloneNotSupportedException {
Conjunction node1 = new Conjunction(SimplePredicates.newString("a"), SimplePredicates.newString("b"));
Conjunction node2 = node1.clone();
assertEquals(node1, node2);
assertNotSame(node1, node2);
assertNotSame(node1.getOperands(), node2.getOperands());
}
@Test
public void requireThatHashCodeIsImplemented() {
assertEquals(new Conjunction().hashCode(), new Conjunction().hashCode());
}
@Test
public void requireThatEqualsIsImplemented() {
Conjunction lhs = new Conjunction(SimplePredicates.newString("foo"),
SimplePredicates.newString("bar"));
assertTrue(lhs.equals(lhs));
assertFalse(lhs.equals(new Object()));
Conjunction rhs = new Conjunction();
assertFalse(lhs.equals(rhs));
rhs.addOperand(SimplePredicates.newString("foo"));
assertFalse(lhs.equals(rhs));
rhs.addOperand(SimplePredicates.newString("bar"));
assertTrue(lhs.equals(rhs));
}
@Test
public void requireThatNodeDelimiterIsAND() {
assertEquals("", newConjunction().toString());
assertEquals("foo", newConjunction("foo").toString());
assertEquals("foo and bar", newConjunction("foo", "bar").toString());
assertEquals("foo and bar and baz", newConjunction("foo", "bar", "baz").toString());
}
@Test
public void requireThatSimpleConjunctionsArePrettyPrinted() {
assertEquals("foo and bar",
new Conjunction(SimplePredicates.newString("foo"),
SimplePredicates.newString("bar")).toString());
}
@Test
public void requireThatComplexConjunctionsArePrintedAsGroup() {
assertEquals("foo and bar and baz",
new Conjunction(SimplePredicates.newString("foo"),
new Conjunction(SimplePredicates.newString("bar"),
SimplePredicates.newString("baz"))).toString());
assertEquals("foo and (bar or baz)",
new Conjunction(SimplePredicates.newString("foo"),
new Disjunction(SimplePredicates.newString("bar"),
SimplePredicates.newString("baz"))).toString());
}
private static Conjunction newConjunction(String... operands) {
return new Conjunction(SimplePredicates.newStrings(operands));
}
}
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