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
|
<!DOCTYPE html>
<meta charset="utf-8">
<title>Blob methods from detached frame work as expected</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="emptyDocumentIframe" src="../support/empty-document.html"></iframe>
<script>
const BlobPrototypeFromDetachedFramePromise = new Promise(resolve => {
emptyDocumentIframe.onload = () => {
const BlobPrototype = emptyDocumentIframe.contentWindow.Blob.prototype;
emptyDocumentIframe.remove();
resolve(BlobPrototype);
};
});
const charCodeArrayToString = charCodeArray => Array.from(charCodeArray, c => String.fromCharCode(c)).join("");
const charCodeBufferToString = charCodeBuffer => charCodeArrayToString(new Uint8Array(charCodeBuffer));
promise_test(async () => {
const { slice } = await BlobPrototypeFromDetachedFramePromise;
const blob = new Blob(["foobar"]);
const slicedBlob = slice.call(blob, 1, 3);
assert_true(slicedBlob instanceof Blob);
assert_equals(await slicedBlob.text(), "oo");
assert_equals(charCodeBufferToString(await slicedBlob.arrayBuffer()), "oo");
const reader = slicedBlob.stream().getReader();
const { value } = await reader.read();
assert_equals(charCodeArrayToString(value), "oo");
}, "slice()");
promise_test(async () => {
const { text } = await BlobPrototypeFromDetachedFramePromise;
const blob = new Blob(["foo"]);
assert_equals(await text.call(blob), "foo");
}, "text()");
promise_test(async () => {
const { arrayBuffer } = await BlobPrototypeFromDetachedFramePromise;
const blob = new Blob(["bar"]);
const charCodeBuffer = await arrayBuffer.call(blob);
assert_equals(charCodeBufferToString(charCodeBuffer), "bar");
}, "arrayBuffer()");
promise_test(async () => {
const { stream } = await BlobPrototypeFromDetachedFramePromise;
const blob = new Blob(["baz"]);
const reader = stream.call(blob).getReader();
const { value } = await reader.read();
assert_equals(charCodeArrayToString(value), "baz");
}, "stream()");
</script>
|
