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
|
<!doctype html>
<meta charset="utf-8">
<title>ImageData Tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(function() {
assert_throws("IndexSizeError", function() {
new ImageData(0, 1);
});
}, "ImageData(w, h), width cannot be 0");
test(function() {
assert_throws("IndexSizeError", function() {
new ImageData(1, 0);
});
}, "ImageData(w, h), height cannot be 0");
test(function() {
var imageData = new ImageData(2, 3);
assert_equals(imageData.width, 2);
assert_equals(imageData.height, 3);
assert_equals(imageData.data.length, 24);
assert_true(imageData.data instanceof Uint8ClampedArray);
}, "ImageData(w, h), exposed attributes check");
test(function() {
assert_throws("InvalidStateError", function() {
new ImageData(new Uint8ClampedArray(3), 1);
});
}, "ImageData(buffer, w), the buffer size must be a multiple of 4");
test(function() {
assert_throws("IndexSizeError", function() {
new ImageData(new Uint8ClampedArray(16), 3);
});
}, "ImageData(buffer, w), buffer size must be a multiple of the image width");
test(function() {
assert_throws("IndexSizeError", function() {
new ImageData(new Uint8ClampedArray(16), 4, 3);
});
}, "ImageData(buffer, w, h), buffer.length == 4 * w * h must be true");
test(function() {
assert_throws(new TypeError(), function() {
new ImageData(new Int8Array(1), 1);
});
}, "ImageData(buffer, w, opt h), Uint8ClampedArray argument type check");
test(function() {
var imageData = new ImageData(new Uint8ClampedArray(24), 2);
assert_equals(imageData.width, 2);
assert_equals(imageData.height, 3);
assert_equals(imageData.data.length, 24);
assert_true(imageData.data instanceof Uint8ClampedArray);
}, "ImageData(buffer, w, opt h), exposed attributes check");
</script>
|
