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replace FileReader with blobs own methods #32432

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replace FileReader with blobs own methods #32432

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1ce88d1
replace FileReader with blobs own methods
jimmywarting Jan 18, 2022
b1432b6
add missing desc
jimmywarting Jan 18, 2022
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41 changes: 12 additions & 29 deletions FileAPI/support/Blob.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,50 +5,33 @@ self.test_blob = (fn, expectations) => {
type = expectations.type,
desc = expectations.desc;

var t = async_test(desc);
t.step(function() {
promise_test(async () => {
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");
});
}
assert_equals(await blob.text(), expected);
}, desc);
};

self.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();
promise_test(async () => {
var blob = fn(),
result = await blob.arrayBuffer();
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,
assert_true(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_array_equals(new Uint8Array(result), expected);
}, desc);
};

// Assert that two TypedArray objects have the same byte values
self.assert_equals_typed_array = (array1, array2) => {
Expand All @@ -67,4 +50,4 @@ self.assert_equals_typed_array = (array1, array2) => {
assert_equals(view1.getUint8(i), view2.getUint8(i),
`Expect byte at buffer position ${i} to be equal`);
}
}
};