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| Current File : //proc/thread-self/root/home/ubuntu/node-v16.18.1/test/fixtures/wpt/FileAPI/support/Blob.js |
'use strict'
function test_blob(fn, expectations) {
var expected = expectations.expected,
type = expectations.type,
desc = expectations.desc;
var t = async_test(desc);
t.step(function() {
var blob = fn();
assert_true(blob instanceof Blob);
assert_false(blob instanceof File);
assert_equals(blob.type, type);
assert_equals(blob.size, expected.length);
var fr = new FileReader();
fr.onload = t.step_func_done(function(event) {
assert_equals(this.result, expected);
}, fr);
fr.onerror = t.step_func(function(e) {
assert_unreached("got error event on FileReader");
});
fr.readAsText(blob, "UTF-8");
});
}
function test_blob_binary(fn, expectations) {
var expected = expectations.expected,
type = expectations.type,
desc = expectations.desc;
var t = async_test(desc);
t.step(function() {
var blob = fn();
assert_true(blob instanceof Blob);
assert_false(blob instanceof File);
assert_equals(blob.type, type);
assert_equals(blob.size, expected.length);
var fr = new FileReader();
fr.onload = t.step_func_done(function(event) {
assert_true(this.result instanceof ArrayBuffer,
"Result should be an ArrayBuffer");
assert_array_equals(new Uint8Array(this.result), expected);
}, fr);
fr.onerror = t.step_func(function(e) {
assert_unreached("got error event on FileReader");
});
fr.readAsArrayBuffer(blob);
});
}
// Assert that two TypedArray objects have the same byte values
self.assert_equals_typed_array = (array1, array2) => {
const [view1, view2] = [array1, array2].map((array) => {
assert_true(array.buffer instanceof ArrayBuffer,
'Expect input ArrayBuffers to contain field `buffer`');
return new DataView(array.buffer, array.byteOffset, array.byteLength);
});
assert_equals(view1.byteLength, view2.byteLength,
'Expect both arrays to be of the same byte length');
const byteLength = view1.byteLength;
for (let i = 0; i < byteLength; ++i) {
assert_equals(view1.getUint8(i), view2.getUint8(i),
`Expect byte at buffer position ${i} to be equal`);
}
}
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