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[linked-list] change PopAfter() parameter to be a pointer (#4599)

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This commit changes `LinkedList::PopAfter()` method to accept a
pointer to a previous entry as a parameter. If the previous entry
pointer is NULL the entry at the head of the list is popped.
This commit is contained in:
Abtin Keshavarzian
2020-03-31 12:11:24 -07:00
committed by Jonathan Hui
parent 3560ed06f7
commit 8a5f538e6f
3 changed files with 29 additions and 28 deletions
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tests/unit/test_linked_list.cpp
+10 -3
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@@ -132,13 +132,13 @@ void TestLinkedList(void)
list.Push(e);
VerifyLinkedListContent(&list, &e, &c, &a, &d, &b, NULL);
VerifyOrQuit(list.PopAfter(a) == &d, "LinkedList::PopAfter() failed");
VerifyOrQuit(list.PopAfter(&a) == &d, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, &e, &c, &a, &b, NULL);
VerifyOrQuit(list.PopAfter(b) == NULL, "LinkedList::PopAfter() failed");
VerifyOrQuit(list.PopAfter(&b) == NULL, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, &e, &c, &a, &b, NULL);
VerifyOrQuit(list.PopAfter(e) == &c, "LinkedList::PopAfter() failed");
VerifyOrQuit(list.PopAfter(&e) == &c, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, &e, &a, &b, NULL);
list.PushAfter(c, b);
@@ -147,8 +147,15 @@ void TestLinkedList(void)
list.PushAfter(d, a);
VerifyLinkedListContent(&list, &e, &a, &d, &b, &c, NULL);
VerifyOrQuit(list.PopAfter(NULL) == &e, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, &a, &d, &b, &c, NULL);
VerifyOrQuit(list.PopAfter(NULL) == &a, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, &d, &b, &c, NULL);
list.Clear();
VerifyOrQuit(list.IsEmpty(), "LinkedList::IsEmpty() failed after Clear()");
VerifyOrQuit(list.PopAfter(NULL) == NULL, "LinkedList::PopAfter() failed");
VerifyLinkedListContent(&list, NULL);
}