2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2020 Nordix Foundation
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 * SPDX-License-Identifier: Apache-2.0
17 * ============LICENSE_END=========================================================
20 package org.onap.policy.apex.core.infrastructure.xml;
22 import static org.junit.Assert.assertEquals;
23 import static org.junit.Assert.assertNotNull;
24 import static org.junit.Assert.assertNull;
26 import java.io.IOException;
28 import javax.xml.xpath.XPathConstants;
29 import org.junit.Test;
31 public class XPathReaderTest {
33 final URL testResource = getClass().getClassLoader().getResource("xmlTestFile.xml");
36 public void canConstructWithFromFile() {
37 final XPathReader objectUnderTest = new XPathReader(testResource.getFile());
38 assertNotNull(objectUnderTest);
42 public void canConstructWithStream() throws IOException {
43 final XPathReader objectUnderTest = new XPathReader(testResource.openStream());
44 assertNotNull(objectUnderTest);
48 public void canConstructWithNull() {
49 final XPathReader objectUnderTest = new XPathReader((String) null);
50 assertNotNull(objectUnderTest);
54 public void canConstructWithInvalidFileName() {
55 final XPathReader objectUnderTest = new XPathReader("");
56 assertNotNull(objectUnderTest);
60 public void readReturnsCorrectValueWhenUsingCorrectXpath() throws IOException {
61 final XPathReader objectUnderTest = new XPathReader(testResource.openStream());
62 final String validXPathExpression = "/example/name";
63 final Object result = objectUnderTest.read(validXPathExpression, XPathConstants.STRING);
64 assertEquals("This is my name", result);
68 public void readReturnsNullWhenUsingInvalidXpath() throws IOException {
69 final XPathReader objectUnderTest = new XPathReader(testResource.openStream());
70 final String invalidXPathExpression = "";
71 assertNull(objectUnderTest.read(invalidXPathExpression, XPathConstants.STRING));