1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.predicate.optimization;
import com.yahoo.document.predicate.Predicate;
import org.junit.Test;
import static com.yahoo.document.predicate.Predicates.*;
import static org.junit.Assert.assertEquals;
/**
* @author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
*/
public class BooleanSimplifierTest {
@Test
public void requireThatOrOfTrueIsTrue() {
assertSimplifiedTo(value(true), or(feature("a").inSet("b"), value(true)));
}
@Test
public void requireThatFalseChildrenOfOrAreRemoved() {
assertSimplifiedTo(feature("a").inSet("b"), or(feature("a").inSet("b"), value(false)));
}
@Test
public void requireThatAndOfFalseIsFalse() {
assertSimplifiedTo(value(false), and(feature("a").inSet("b"), value(false)));
}
@Test
public void requireThatTrueChildrenOfAndAreRemoved() {
assertSimplifiedTo(feature("a").inSet("b"), and(feature("a").inSet("b"), value(true)));
}
@Test
public void requireThatSingleChildAndOrAreRemoved() {
assertSimplifiedTo(feature("a").inSet("b"), and(or(and(feature("a").inSet("b")))));
}
@Test
public void requireThatValueChildrenOfNotAreInverted() {
assertSimplifiedTo(value(true), not(value(false)));
assertSimplifiedTo(value(false), not(value(true)));
assertSimplifiedTo(value(true), not(not(not(value(false)))));
assertSimplifiedTo(value(true), not(not(not(and(feature("a").inSet("b"), value(false))))));
}
@Test
public void requireThatComplexExpressionIsSimplified() {
assertSimplifiedTo(
Predicate.fromString("'pub_entity' not in [301951]"),
Predicate.fromString("true and true and true and true and true and 'pub_entity' not in [301951] and ((true and true and true and true) or (true and true and true and true) or (true and true and true and true and 'pub_entity' in [86271]))"));
}
private void assertSimplifiedTo(Predicate expected, Predicate input) {
BooleanSimplifier simplifier = new BooleanSimplifier();
Predicate actual = simplifier.process(input, new PredicateOptions(10));
assertEquals(expected, actual);
}
}
|