public void testRemove() throws IOException {
int i = 0;
TextFile tf = new TextFile(TEST_FILE_NAME);
for (String name : tf) {
System.out.println("::: " + name);
assertEquals(names.get(i++), name);
}
// testing remove()
for (Iterator<String> it = tf.iterator(); it.hasNext(); ) {
String name = it.next();
if ("Dirk".equals(name)) {
it.remove();
System.out.println("removing dirk");
}
}
names.remove("Dirk");
i = 0;
for (String name : tf) {
System.out.println("::: " + name);
assertEquals(names.get(i++), name);
}
}
public void testBadRemove() throws IOException {
TextFile tf = new TextFile(TEST_FILE_NAME);
Iterator<String> it = tf.iterator();
try {
it.remove();
fail("Expected an IllegalStateException");
} catch (IllegalStateException success) {
}
}
public void testAllRemove() throws IOException {
TextFile tf = new TextFile(TEST_FILE_NAME);
// testing remove() on first element
Iterator<String> it = tf.iterator();
while (it.hasNext()) {
it.next();
it.remove();
}
it = tf.iterator();
assertFalse(it.hasNext());
}
public void testFirstRemove() throws IOException {
int i = 0;
TextFile tf = new TextFile(TEST_FILE_NAME);
// testing remove() on first element
Iterator<String> it = tf.iterator();
it.next();
it.remove();
names.remove("John");
i = 0;
for (String name : tf) {
System.out.println("::: " + name);
assertEquals(names.get(i++), name);
}
}
public void testConcurrentModificationException() throws IOException {
TextFile tf = new TextFile(TEST_FILE_NAME);
Iterator<String> broken = tf.iterator();
for (Iterator<String> it = tf.iterator(); it.hasNext(); ) {
String name = it.next();
if ("Dirk".equals(name)) {
it.remove();
}
}
try {
broken.next();
fail("Expected a ConcurrentModificationException");
} catch (ConcurrentModificationException success) {
}
}