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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
local queue = require "util.queue";
describe("util.queue", function()
describe("#new()", function()
it("should work", function()
do
local q = queue.new(10);
assert.are.equal(q.size, 10);
assert.are.equal(q:count(), 0);
assert.is_true(q:push("one"));
assert.is_true(q:push("two"));
assert.is_true(q:push("three"));
for i = 4, 10 do
assert.is_true(q:push("hello"));
assert.are.equal(q:count(), i, "count is not "..i.."("..q:count()..")");
end
assert.are.equal(q:push("hello"), nil, "queue overfull!");
assert.are.equal(q:push("hello"), nil, "queue overfull!");
assert.are.equal(q:pop(), "one", "queue item incorrect");
assert.are.equal(q:pop(), "two", "queue item incorrect");
assert.is_true(q:push("hello"));
assert.is_true(q:push("hello"));
assert.are.equal(q:pop(), "three", "queue item incorrect");
assert.is_true(q:push("hello"));
assert.are.equal(q:push("hello"), nil, "queue overfull!");
assert.are.equal(q:push("hello"), nil, "queue overfull!");
assert.are.equal(q:count(), 10, "queue count incorrect");
for _ = 1, 10 do
assert.are.equal(q:pop(), "hello", "queue item incorrect");
end
assert.are.equal(q:count(), 0, "queue count incorrect");
assert.are.equal(q:pop(), nil, "empty queue pops non-nil result");
assert.are.equal(q:count(), 0, "popping empty queue affects count");
assert.are.equal(q:peek(), nil, "empty queue peeks non-nil result");
assert.are.equal(q:count(), 0, "peeking empty queue affects count");
assert.is_true(q:push(1));
for i = 1, 1001 do
assert.are.equal(q:pop(), i);
assert.are.equal(q:count(), 0);
assert.is_true(q:push(i+1));
assert.are.equal(q:count(), 1);
end
assert.are.equal(q:pop(), 1002);
assert.is_true(q:push(1));
for i = 1, 1000 do
assert.are.equal(q:pop(), i);
assert.is_true(q:push(i+1));
end
assert.are.equal(q:pop(), 1001);
assert.are.equal(q:count(), 0);
end
do
-- Test queues that purge old items when pushing to a full queue
local q = queue.new(10, true);
for i = 1, 10 do
q:push(i);
end
assert.are.equal(q:count(), 10);
assert.is_true(q:push(11));
assert.are.equal(q:count(), 10);
assert.are.equal(q:pop(), 2); -- First item should have been purged
assert.are.equal(q:peek(), 3);
for i = 12, 32 do
assert.is_true(q:push(i));
end
assert.are.equal(q:count(), 10);
assert.are.equal(q:pop(), 23);
end
do
-- Test iterator
local q = queue.new(10, true);
for i = 1, 10 do
q:push(i);
end
local i = 0;
for item in q:items() do
i = i + 1;
assert.are.equal(item, i, "unexpected item returned by iterator")
end
end
end);
end);
end);
|
