public void testEmptyIteratorsInTheMiddle() {
final IteratorChain<String> c = new IteratorChain<>();
c.addIterator(makeIterator("a", 3));
c.addIterator(makeIterator("b", 0));
c.addIterator(makeIterator("c", 1));
assertEquals("a1a2a3c1", getString(c));
}
public void testRemove() {
final IteratorChain<String> c = new IteratorChain<>();
try {
c.remove();
fail("Calling remove should throw UnsupportedOperationException");
} catch (UnsupportedOperationException asExpected) {
// we're fine
}
}
public void testCallAddTooLate() {
final IteratorChain<String> c = new IteratorChain<>();
c.hasNext();
try {
c.addIterator(makeIterator("a", 3));
fail("Calling addIterator after hasNext() should throw RuntimeException");
} catch (RuntimeException asExpected) {
// we're fine
}
}
public void testCallNextTooEarly() {
final IteratorChain<String> c = new IteratorChain<>();
c.addIterator(makeIterator("a", 3));
try {
c.next();
fail("Calling next() before hasNext() should throw RuntimeException");
} catch (RuntimeException asExpected) {
// we're fine
}
}
public void testTwoIterators() {
final IteratorChain<String> c = new IteratorChain<>();
c.addIterator(makeIterator("a", 3));
c.addIterator(makeIterator("b", 2));
assertEquals("a1a2a3b1b2", getString(c));
}
public void testOneIterator() {
final IteratorChain<String> c = new IteratorChain<>();
c.addIterator(makeIterator("a", 3));
assertEquals("a1a2a3", getString(c));
}
public void testNoIterator() {
final IteratorChain<String> c = new IteratorChain<>();
assertFalse("Empty IteratorChain.hastNext() is false", c.hasNext());
assertEquals("", getString(c));
}