void test_open() {
String* path = String::create(state, ".");
TS_ASSERT_EQUALS(d->open(state, path), Qnil);
TS_ASSERT(!d->data()->nil_p());
}
void test_close() {
String* path = String::create(state, ".");
d->open(state, path);
TS_ASSERT_EQUALS(d->close(state), Qtrue);
TS_ASSERT(d->data()->nil_p());
}
void test_create() {
TS_ASSERT(kind_of<Dir>(d));
TS_ASSERT(d->data()->nil_p());
}