/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.util.xml;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.xml.XMLConstants;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
/**
* @author Arjen Poutsma
* @author Leo Arnold
*/
public class SimpleNamespaceContextTests {
private final String unboundPrefix = "unbound";
private final String prefix = "prefix";
private final String namespaceUri = "http://Namespace-name-URI";
private final String additionalNamespaceUri = "http://Additional-namespace-name-URI";
private final String unboundNamespaceUri = "http://Unbound-namespace-name-URI";
private final String defaultNamespaceUri = "http://Default-namespace-name-URI";
private final SimpleNamespaceContext context = new SimpleNamespaceContext();
@Test(expected = IllegalArgumentException.class)
public void getNamespaceURI_withNull() throws Exception {
context.getNamespaceURI(null);
}
@Test
public void getNamespaceURI() {
context.bindNamespaceUri(XMLConstants.XMLNS_ATTRIBUTE, additionalNamespaceUri);
assertThat("Always returns \"http://www.w3.org/2000/xmlns/\" for \"xmlns\"",
context.getNamespaceURI(XMLConstants.XMLNS_ATTRIBUTE), is(XMLConstants.XMLNS_ATTRIBUTE_NS_URI));
context.bindNamespaceUri(XMLConstants.XML_NS_PREFIX, additionalNamespaceUri);
assertThat("Always returns \"http://www.w3.org/XML/1998/namespace\" for \"xml\"",
context.getNamespaceURI(XMLConstants.XML_NS_PREFIX), is(XMLConstants.XML_NS_URI));
assertThat("Returns \"\" for an unbound prefix", context.getNamespaceURI(unboundPrefix),
is(XMLConstants.NULL_NS_URI));
context.bindNamespaceUri(prefix, namespaceUri);
assertThat("Returns the bound namespace URI for a bound prefix", context.getNamespaceURI(prefix),
is(namespaceUri));
assertThat("By default returns URI \"\" for the default namespace prefix",
context.getNamespaceURI(XMLConstants.DEFAULT_NS_PREFIX), is(XMLConstants.NULL_NS_URI));
context.bindDefaultNamespaceUri(defaultNamespaceUri);
assertThat("Returns the set URI for the default namespace prefix",
context.getNamespaceURI(XMLConstants.DEFAULT_NS_PREFIX), is(defaultNamespaceUri));
}
@Test(expected = IllegalArgumentException.class)
public void getPrefix_withNull() throws Exception {
context.getPrefix(null);
}
@Test
public void getPrefix() {
assertThat("Always returns \"xmlns\" for \"http://www.w3.org/2000/xmlns/\"",
context.getPrefix(XMLConstants.XMLNS_ATTRIBUTE_NS_URI), is(XMLConstants.XMLNS_ATTRIBUTE));
assertThat("Always returns \"xml\" for \"http://www.w3.org/XML/1998/namespace\"",
context.getPrefix(XMLConstants.XML_NS_URI), is(XMLConstants.XML_NS_PREFIX));
assertThat("Returns null for an unbound namespace URI", context.getPrefix(unboundNamespaceUri),
is(nullValue()));
context.bindNamespaceUri("prefix1", namespaceUri);
context.bindNamespaceUri("prefix2", namespaceUri);
assertThat("Returns a prefix for a bound namespace URI", context.getPrefix(namespaceUri),
anyOf(is("prefix1"), is("prefix2")));
}
@Test(expected = IllegalArgumentException.class)
public void getPrefixes_withNull() throws Exception {
context.getPrefixes(null);
}
@Test(expected = UnsupportedOperationException.class)
public void getPrefixes_IteratorIsNotModifiable() throws Exception {
context.bindNamespaceUri(prefix, namespaceUri);
Iterator<String> iterator = context.getPrefixes(namespaceUri);
iterator.remove();
}
@Test
public void getPrefixes() {
assertThat("Returns only \"xmlns\" for \"http://www.w3.org/2000/xmlns/\"",
getItemSet(context.getPrefixes(XMLConstants.XMLNS_ATTRIBUTE_NS_URI)),
is(makeSet(XMLConstants.XMLNS_ATTRIBUTE)));
assertThat("Returns only \"xml\" for \"http://www.w3.org/XML/1998/namespace\"",
getItemSet(context.getPrefixes(XMLConstants.XML_NS_URI)), is(makeSet(XMLConstants.XML_NS_PREFIX)));
assertThat("Returns empty iterator for unbound prefix", context.getPrefixes("unbound Namespace URI").hasNext(),
is(false));
context.bindNamespaceUri("prefix1", namespaceUri);
context.bindNamespaceUri("prefix2", namespaceUri);
assertThat("Returns all prefixes (and only those) bound to the namespace URI",
getItemSet(context.getPrefixes(namespaceUri)), is(makeSet("prefix1", "prefix2")));
}
@Test(expected = IllegalArgumentException.class)
public void bindNamespaceUri_withNullNamespaceUri() {
context.bindNamespaceUri("prefix", null);
}
@Test(expected = IllegalArgumentException.class)
public void bindNamespaceUri_withNullPrefix() {
context.bindNamespaceUri(null, namespaceUri);
}
@Test
public void bindNamespaceUri() {
context.bindNamespaceUri(prefix, namespaceUri);
assertThat("The Namespace URI was bound to the prefix", context.getNamespaceURI(prefix), is(namespaceUri));
assertThat("The prefix was bound to the namespace URI", getItemSet(context.getPrefixes(namespaceUri)),
hasItem(prefix));
}
@Test
public void getBoundPrefixes() {
context.bindNamespaceUri("prefix1", namespaceUri);
context.bindNamespaceUri("prefix2", namespaceUri);
context.bindNamespaceUri("prefix3", additionalNamespaceUri);
assertThat("Returns all bound prefixes", getItemSet(context.getBoundPrefixes()),
is(makeSet("prefix1", "prefix2", "prefix3")));
}
@Test
public void clear() {
context.bindNamespaceUri("prefix1", namespaceUri);
context.bindNamespaceUri("prefix2", namespaceUri);
context.bindNamespaceUri("prefix3", additionalNamespaceUri);
context.clear();
assertThat("All bound prefixes were removed", context.getBoundPrefixes().hasNext(), is(false));
assertThat("All bound namespace URIs were removed", context.getPrefixes(namespaceUri).hasNext(), is(false));
}
@Test
public void removeBinding() {
context.removeBinding(unboundPrefix);
context.bindNamespaceUri(prefix, namespaceUri);
context.removeBinding(prefix);
assertThat("Returns default namespace URI for removed prefix", context.getNamespaceURI(prefix),
is(XMLConstants.NULL_NS_URI));
assertThat("#getPrefix returns null when all prefixes for a namespace URI were removed",
context.getPrefix(namespaceUri), is(nullValue()));
assertThat("#getPrefixes returns an empty iterator when all prefixes for a namespace URI were removed",
context.getPrefixes(namespaceUri).hasNext(), is(false));
context.bindNamespaceUri("prefix1", additionalNamespaceUri);
context.bindNamespaceUri("prefix2", additionalNamespaceUri);
context.removeBinding("prefix1");
assertThat("Prefix was unbound", context.getNamespaceURI("prefix1"), is(XMLConstants.NULL_NS_URI));
assertThat("#getPrefix returns a bound prefix after removal of another prefix for the same namespace URI",
context.getPrefix(additionalNamespaceUri), is("prefix2"));
assertThat("Prefix was removed from namespace URI", getItemSet(context.getPrefixes(additionalNamespaceUri)),
is(makeSet("prefix2")));
}
private Set<String> getItemSet(Iterator<String> iterator) {
Set<String> itemSet = new HashSet<>();
while (iterator.hasNext()) {
itemSet.add(iterator.next());
}
return itemSet;
}
private Set<String> makeSet(String... items) {
Set<String> itemSet = new HashSet<>();
for (String item : items) {
itemSet.add(item);
}
return itemSet;
}
}