/**
* This test was inspired by an actual bug in one of implementations: initial state was not
* properly set if nextTag() was called (instead of nextEvent()), and subsequent peek() failed.
*/
public void testPeek() throws XMLStreamException {
String XML = "<root>text</root>";
for (int i = 0; i < 4; ++i) {
boolean ns = (i & 1) != 0;
boolean coal = (i & 2) != 0;
XMLEventReader er = getReader(XML, ns, coal);
assertTokenType(START_DOCUMENT, er.nextEvent().getEventType());
XMLEvent tag = er.nextTag();
assertTokenType(START_ELEMENT, tag.getEventType());
// Now, peek() should produce text..
XMLEvent text = er.peek();
assertTokenType(CHARACTERS, text.getEventType());
Characters chars = text.asCharacters();
assertNotNull(chars);
assertEquals("text", chars.getData());
// and need nextEvent() to get rid of it, too:
text = er.nextEvent();
// Let's verify it again:
assertTokenType(CHARACTERS, text.getEventType());
chars = text.asCharacters();
assertNotNull(chars);
assertEquals("text", chars.getData());
assertTokenType(END_ELEMENT, er.nextTag().getEventType());
assertTokenType(END_DOCUMENT, er.nextEvent().getEventType());
// And at the end, peek() should return null
assertNull(er.peek());
}
}
public void testNextTagOk() throws XMLStreamException {
String XML = "<root>\n" + "<branch> <leaf> </leaf></branch>" + "</root>";
for (int i = 0; i < 4; ++i) {
boolean ns = (i & 1) != 0;
boolean coal = (i & 2) != 0;
XMLEventReader er = getReader(XML, ns, coal);
assertTokenType(START_DOCUMENT, er.nextEvent().getEventType());
assertTokenType(START_ELEMENT, er.nextTag().getEventType());
assertTokenType(START_ELEMENT, er.nextTag().getEventType());
/* Ok, let's mix in bit of peeking to ensure reader won't
* be confused too badly...
*/
// This should be space between <branch> and <leaf>...
assertTokenType(CHARACTERS, er.peek().getEventType());
// And then the leaf
assertTokenType(START_ELEMENT, er.nextTag().getEventType());
assertTokenType(END_ELEMENT, er.nextTag().getEventType());
assertTokenType(END_ELEMENT, er.nextTag().getEventType());
assertTokenType(END_ELEMENT, er.nextTag().getEventType());
assertTokenType(END_DOCUMENT, er.nextEvent().getEventType());
assertFalse(er.hasNext());
}
}
public void testNextTagInvalid() throws XMLStreamException {
String XML = "<root> non-empty<leaf /></root>";
String XML2 = "<root><leaf></leaf>text </root>";
for (int i = 0; i < 4; ++i) {
boolean ns = (i & 1) != 0;
boolean coal = (i & 2) != 0;
XMLEventReader er = getReader(XML, ns, coal);
assertTokenType(START_DOCUMENT, er.nextEvent().getEventType());
assertTokenType(START_ELEMENT, er.nextEvent().getEventType());
String msg = null;
try {
XMLEvent evt = er.nextTag();
msg =
"Expected a XMLStreamException when trying to call XMLEventReader.nextTag() on non-empty CHARACTERS";
} catch (XMLStreamException sex) {
// fine!
} catch (Throwable t) {
msg =
"Expected a XMLStreamException when trying to call XMLEventReader.nextTag() on non-empty CHARACTERS; got ("
+ t.getClass()
+ "): "
+ t;
}
if (msg != null) {
fail(msg);
}
er.close();
/* any other easily failing cases? Maybe if we are on top of
* END_ELEMENT, and will hit another one?
*/
er = getReader(XML2, ns, coal);
assertTokenType(START_DOCUMENT, er.nextEvent().getEventType());
assertTokenType(START_ELEMENT, er.nextEvent().getEventType());
assertTokenType(START_ELEMENT, er.nextEvent().getEventType());
assertTokenType(END_ELEMENT, er.nextEvent().getEventType());
try {
XMLEvent evt = er.nextTag();
msg =
"Expected a XMLStreamException when trying to call XMLEventReader.nextTag() on END_ELEMENT and hitting non-ws text; got event "
+ tokenTypeDesc(evt);
} catch (XMLStreamException sex) {
msg = null; // fine!
} catch (Throwable t) {
msg =
"Expected a XMLStreamException when trying to call XMLEventReader.nextTag() on END_ELEMENT and hitting non-ws text; got: "
+ t;
}
if (msg != null) {
fail(msg);
}
er.close();
}
}