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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.searchlib.gbdt;
import org.junit.Test;
import org.w3c.dom.Element;
import java.util.List;
import static org.junit.Assert.*;
/**
* @author Simon Thoresen Hult
*/
public class XmlHelperTestCase {
@Test
public void requireThatAttributeTextCanBeRetrieved() throws Exception {
Element node = XmlHelper.parseXml("<element a1='v1' a2='v2' />");
assertEquals("v1", XmlHelper.getAttributeText(node, "a1"));
assertEquals("v2", XmlHelper.getAttributeText(node, "a2"));
}
@Test
public void requireThatMissingAttributeTextThrowsIllegalArgument() throws Exception {
try {
XmlHelper.getAttributeText(XmlHelper.parseXml("<element />"), "a1");
fail();
} catch (IllegalArgumentException e) {
}
try {
XmlHelper.getAttributeText(XmlHelper.parseXml("<element a1='' />"), "a1");
fail();
} catch (IllegalArgumentException e) {
}
}
@Test
public void requireThatSingleElementCanBeRetrieved() throws Exception {
String xml = "<parent>" +
" <child id='a' />" +
"</parent>";
Element element = XmlHelper.getSingleElement(XmlHelper.parseXml(xml), null);
assertNotNull(element);
assertEquals("a", XmlHelper.getAttributeText(element, "id"));
}
@Test
public void requireThatNamedSingleElementCanBeRetrieved() throws Exception {
String xml = "<parent>" +
" <bastard id='a' />" +
" <child id='b' />" +
" <bastard id='c' />" +
"</parent>";
Element element = XmlHelper.getSingleElement(XmlHelper.parseXml(xml), "child");
assertNotNull(element);
assertEquals("b", XmlHelper.getAttributeText(element, "id"));
}
@Test
public void requireThatMissingSingleElementThrowsIllegalArgument() throws Exception {
try {
XmlHelper.getSingleElement(XmlHelper.parseXml("<parent />"), null);
fail();
} catch (IllegalArgumentException e) {
}
}
@Test
public void requireThatMissingNamedSingleElementThrowsIllegalArgument() throws Exception {
String xml = "<parent>" +
" <bastard id='a' />" +
"</parent>";
try {
XmlHelper.getSingleElement(XmlHelper.parseXml(xml), "child");
fail();
} catch (IllegalArgumentException e) {
}
}
@Test
public void requireThatAmbigousSingleElementThrowsIllegalArgument() throws Exception {
String xml = "<parent>" +
" <child id='a' />" +
" <child id='b' />" +
"</parent>";
try {
XmlHelper.getSingleElement(XmlHelper.parseXml(xml), null);
fail();
} catch (IllegalArgumentException e) {
}
}
@Test
public void requireThatAmbigousNamedSingleElementThrowsIllegalArgument() throws Exception {
String xml = "<parent>" +
" <child id='a' />" +
" <bastard id='b' />" +
" <child id='c' />" +
"</parent>";
try {
XmlHelper.getSingleElement(XmlHelper.parseXml(xml), "child");
fail();
} catch (IllegalArgumentException e) {
}
}
@Test
public void requireThatChildElementsCanBeRetrieved() throws Exception {
String xml = "<parent>" +
" <child id='a' />" +
" <child id='b' />" +
"</parent>";
List<Element> lst = XmlHelper.getChildElements(XmlHelper.parseXml(xml), null);
assertNotNull(lst);
assertEquals(2, lst.size());
assertEquals("a", XmlHelper.getAttributeText(lst.get(0), "id"));
assertEquals("b", XmlHelper.getAttributeText(lst.get(1), "id"));
}
@Test
public void requireThatNamedChildElementsCanBeRetrieved() throws Exception {
String xml = "<parent>" +
" <child id='a' />" +
" <bastard id='b' />" +
" <child id='c' />" +
"</parent>";
List<Element> lst = XmlHelper.getChildElements(XmlHelper.parseXml(xml), "child");
assertNotNull(lst);
assertEquals(2, lst.size());
assertEquals("a", XmlHelper.getAttributeText(lst.get(0), "id"));
assertEquals("c", XmlHelper.getAttributeText(lst.get(1), "id"));
}
@Test
public void requireThatChildElementsAreNeverNull() throws Exception {
List<Element> lst = XmlHelper.getChildElements(XmlHelper.parseXml("<parent />"), null);
assertNotNull(lst);
assertTrue(lst.isEmpty());
}
@Test
public void requireThatNamedChildElementsAreNeverNull() throws Exception {
List<Element> lst = XmlHelper.getChildElements(XmlHelper.parseXml("<parent />"), "child");
assertNotNull(lst);
assertTrue(lst.isEmpty());
}
}
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