@Test
public void testEquals() {
TupleDesc singleInt = new TupleDesc(new Type[] {Type.INT_TYPE});
TupleDesc singleInt2 = new TupleDesc(new Type[] {Type.INT_TYPE});
TupleDesc intString = new TupleDesc(new Type[] {Type.INT_TYPE, Type.STRING_TYPE});
// .equals() with null should return false
assertFalse(singleInt.equals(null));
// .equals() with the wrong type should return false
assertFalse(singleInt.equals(new Object()));
assertTrue(singleInt.equals(singleInt));
assertTrue(singleInt.equals(singleInt2));
assertTrue(singleInt2.equals(singleInt));
assertTrue(intString.equals(intString));
assertFalse(singleInt.equals(intString));
assertFalse(singleInt2.equals(intString));
assertFalse(intString.equals(singleInt));
assertFalse(intString.equals(singleInt2));
}
/**
* Adds the specified tuple to the page; the tuple should be updated to reflect that it is now
* stored on this page.
*
* @throws DbException if the page is full (no empty slots) or tupledesc is mismatch.
* @param t The tuple to add.
*/
public void insertTuple(Tuple t) throws DbException {
// some code goes here
// not necessary for lab1
RecordId targetrid = t.getRecordId();
if (getNumEmptySlots() == 0 || !td.equals(t.getTupleDesc())) {
throw new DbException("Either page is full or tuple desc doesn't match");
}
for (int i = 0; i < getNumTuples(); i++) {
if (!isSlotUsed(i)) {
markSlotUsed(i, true);
RecordId rid = new RecordId(pid, i);
t.setRecordId(rid);
tuples[i] = t;
return;
}
}
}