@Test
public void should_get_a_new_iterator_if_the_input_was_closed() throws Exception {
Iterator<String> it1 = VALID_DIRECTORY_INPUT.iterator();
VALID_DIRECTORY_INPUT.close();
Iterator<String> it2 = VALID_DIRECTORY_INPUT.iterator();
assertNotSame(it1, it2);
}
@Test(expected = IllegalStateException.class)
public void should_throw_IllegalStateException_if_IOException_while_reading_files()
throws Exception {
Iterator<String> it = VALID_DIRECTORY_INPUT.iterator();
SOME_FILE.delete();
OTHER_FILE.delete();
it.hasNext();
}
@Test
public void should_iterate_all_lines() throws Exception {
Iterator<String> it = VALID_DIRECTORY_INPUT.iterator();
int nbLines = 0;
while (it.hasNext()) {
nbLines++;
it.next();
}
assertEquals(5, nbLines);
}
@Test
public void should_read_all_lines_in_any_order() throws Exception {
String[] expectedContent =
new String[] {
SOME_FILE_LINE1, SOME_FILE_LINE2, OTHER_FILE_LINE1, OTHER_FILE_LINE2, OTHER_FILE_LINE3
};
Iterator<String> it = VALID_DIRECTORY_INPUT.iterator();
List<String> actualContent = new ArrayList<String>();
while (it.hasNext()) {
String line = it.next();
actualContent.add(line);
}
assertThat(actualContent, hasItems(expectedContent));
}
@Test
public void should_get_valid_non_empty_iterator() throws Exception {
Iterator<String> it = VALID_DIRECTORY_INPUT.iterator();
assertNotNull(it);
assertTrue(it.hasNext());
}
@Test
public void should_not_throw_exception_if_close_when_no_iterator() throws Exception {
VALID_DIRECTORY_INPUT.close();
}