1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsTPriorityQueue.h"
#include <stdio.h>
#include <stdlib.h>
#include "gtest/gtest.h"
template <class T, class Compare>
void CheckPopSequence(const nsTPriorityQueue<T, Compare>& aQueue,
const T* aExpectedSequence,
const uint32_t aSequenceLength) {
nsTPriorityQueue<T, Compare> copy = aQueue.Clone();
for (uint32_t i = 0; i < aSequenceLength; i++) {
EXPECT_FALSE(copy.IsEmpty());
T pop = copy.Pop();
EXPECT_EQ(pop, aExpectedSequence[i]);
}
EXPECT_TRUE(copy.IsEmpty());
}
template <class A>
class MaxCompare {
public:
bool LessThan(const A& a, const A& b) { return a > b; }
};
TEST(PriorityQueue, Main)
{
nsTPriorityQueue<int> queue;
EXPECT_TRUE(queue.IsEmpty());
queue.Push(8);
queue.Push(6);
queue.Push(4);
queue.Push(2);
queue.Push(10);
queue.Push(6);
EXPECT_EQ(queue.Top(), 2);
EXPECT_EQ(queue.Length(), 6u);
EXPECT_FALSE(queue.IsEmpty());
int expected[] = {2, 4, 6, 6, 8, 10};
CheckPopSequence(queue, expected, sizeof(expected) / sizeof(expected[0]));
// copy ctor is tested by using CheckPopSequence, but check default assignment
// operator
nsTPriorityQueue<int> queue2;
queue2 = queue.Clone();
CheckPopSequence(queue2, expected, sizeof(expected) / sizeof(expected[0]));
queue.Clear();
EXPECT_TRUE(queue.IsEmpty());
// try same sequence with a max heap
nsTPriorityQueue<int, MaxCompare<int> > max_queue;
max_queue.Push(8);
max_queue.Push(6);
max_queue.Push(4);
max_queue.Push(2);
max_queue.Push(10);
max_queue.Push(6);
EXPECT_EQ(max_queue.Top(), 10);
int expected_max[] = {10, 8, 6, 6, 4, 2};
CheckPopSequence(max_queue, expected_max,
sizeof(expected_max) / sizeof(expected_max[0]));
}
|
