2 * Copyright (c) 2018 Pantheon Technologies, s.r.o. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.xpath.impl;
10 import static org.hamcrest.MatcherAssert.assertThat;
11 import static org.hamcrest.Matchers.isA;
12 import static org.junit.Assert.assertEquals;
14 import com.google.common.collect.ImmutableBiMap;
15 import javax.xml.xpath.XPathExpressionException;
16 import org.eclipse.jdt.annotation.Nullable;
17 import org.junit.Before;
18 import org.junit.Test;
19 import org.opendaylight.yangtools.yang.common.BiMapYangNamespaceContext;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.common.QNameModule;
22 import org.opendaylight.yangtools.yang.common.XMLNamespace;
23 import org.opendaylight.yangtools.yang.common.YangNamespaceContext;
24 import org.opendaylight.yangtools.yang.xpath.api.YangBinaryExpr;
25 import org.opendaylight.yangtools.yang.xpath.api.YangBinaryOperator;
26 import org.opendaylight.yangtools.yang.xpath.api.YangBooleanConstantExpr;
27 import org.opendaylight.yangtools.yang.xpath.api.YangExpr;
28 import org.opendaylight.yangtools.yang.xpath.api.YangLocationPath;
29 import org.opendaylight.yangtools.yang.xpath.api.YangXPathAxis;
30 import org.opendaylight.yangtools.yang.xpath.api.YangXPathMathMode;
32 @SuppressWarnings("null")
33 public class XPathParserTest {
34 private static final QNameModule DEFNS = QNameModule.create(XMLNamespace.of("defaultns"));
35 private static final YangNamespaceContext CONTEXT = new BiMapYangNamespaceContext(ImmutableBiMap.of(
37 "foo", QNameModule.create(XMLNamespace.of("foo")),
38 "bar", QNameModule.create(XMLNamespace.of("bar"))));
40 private @Nullable AntlrXPathParser parser;
43 public void before() {
44 parser = new AntlrXPathParser.Unqualified(YangXPathMathMode.IEEE754, CONTEXT, DEFNS);
48 public void testSmoke() throws XPathExpressionException {
49 parseExpr("../a[foo = current()/foo]");
58 parseExpr("@foo:foo");
59 parseExpr("current()");
60 parseExpr("foo:self()");
61 parseExpr("foo:comment()");
62 parseExpr("/a[foo = 2 and bar = 3]");
63 parseExpr("/a[foo = \"2\" and bar = '3']");
64 parseExpr("/foo:a[foo = 2 and bar = 3]");
65 parseExpr("//a[foo = 2 and bar = 3]");
66 parseExpr("//foo:a[foo=2 and bar:bar=3]");
67 parseExpr("a//b[foo = 2]");
68 parseExpr("foo:a//b[foo = 2]");
69 parseExpr("$foo:comment");
70 parseExpr("$comment");
75 public void testUnionSquashing() throws XPathExpressionException {
76 final YangExpr a = parseExpr("a");
77 assertEquals(a, parseExpr("a|a"));
78 assertEquals(a, parseExpr("a|a|a"));
79 assertEquals(a, parseExpr("a|a|a|a"));
81 final YangExpr ab = parseExpr("a|b");
82 assertEquals(ab, parseExpr("a|b|a"));
83 assertEquals(ab, parseExpr("a|b|a|b"));
84 assertEquals(ab, parseExpr("a|a|b|a|b"));
85 assertEquals(ab, parseExpr("a|b|b|a|b"));
86 assertEquals(ab, parseExpr("a|b|a|a|b"));
90 public void testNumberSquashing() throws XPathExpressionException {
91 final YangExpr two = parseExpr("2");
92 assertEquals(two, parseExpr("1 + 1"));
93 assertEquals(two, parseExpr("3 - 1"));
94 assertEquals(two, parseExpr("2 * 1"));
95 assertEquals(two, parseExpr("4 div 2"));
96 assertEquals(two, parseExpr("6 mod 4"));
100 public void testSameExprSquashing() throws XPathExpressionException {
102 assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("/a != /a"));
103 assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("/a = /a"));
106 assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("2 != 2"));
107 assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("2 != (1 + 1)"));
108 assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("2 = 2"));
109 assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("2 = (1 + 1)"));
113 public void testGreaterEqualReference() throws XPathExpressionException {
114 final YangExpr expr = parseExpr(". >= ../lower-port");
115 assertThat(expr, isA(YangBinaryExpr.class));
117 final YangBinaryExpr binary = (YangBinaryExpr) expr;
118 assertEquals(YangBinaryOperator.GTE, binary.getOperator());
119 assertEquals(YangLocationPath.self(), binary.getLeftExpr());
120 assertEquals(YangLocationPath.relative(YangXPathAxis.PARENT.asStep(),
121 YangXPathAxis.CHILD.asStep(QName.create(DEFNS, "lower-port"))), binary.getRightExpr());
124 private YangExpr parseExpr(final String xpath) throws XPathExpressionException {
125 return parser.parseExpression(xpath).getRootExpr();