Files
sousa-gecko/testing/web-platform/tests/webnn/validation_tests/constant-changed-buffer.https.any.js
T
Wei Wang 82479fa066 Bug 2045298 [wpt PR 60418] - [WebNN] Add "webnn" permissions policy feature, a=testonly
Automatic update from web-platform-tests
[WebNN] Add "webnn" permissions policy feature

Implement the "webnn" policy-controlled feature as specified in the
WebNN specification [1]. The default allowlist is 'self', which means
the WebNN API is available to top-level documents and same-origin
iframes by default, but blocked in cross-origin iframes unless
explicitly granted via the Permissions-Policy header or iframe allow
attribute.

When the feature is disabled, navigator.ml.createContext() rejects
with a "SecurityError" DOMException per the spec.

This CL also changes the WebIDL to only expose the WebNN interfaces
to DedicatedWorker and updates related WPTs.

[1] https://www.w3.org/TR/webnn/#permissions-policy-integration

Bug: 502083483
Change-Id: I5c723e0ea03864fd0b122aed8b3d31f602545a2e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7885337
Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Reviewed-by: Bo Liu <boliu@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Wang, Wei4 <wei4.wang@intel.com>
Cr-Commit-Position: refs/heads/main@{#1642237}

--

wpt-commits: 48d66a5560161cc5b7a372c709964963f62a8e58
wpt-pr: 60418
2026-06-09 18:47:15 +00:00

76 lines
2.9 KiB
JavaScript

// META: title=ensure MLGraphBuilder.constant() handles buffers which change
// META: global=window
// META: variant=?cpu
// META: variant=?gpu
// META: variant=?npu
// META: script=../resources/utils_validation.js
promise_test(async t => {
const builder = new MLGraphBuilder(context);
let backingBuffer = new ArrayBuffer(8);
let aBuffer = new Float32Array(backingBuffer, 0, 2);
aBuffer[0] = 2;
aBuffer[1] = 3;
const a = builder.constant({dataType: 'float32', shape: [2]}, aBuffer);
// Detach `aBuffer`. Constant data should already be copied, so changes to
// the buffer afterwards should not be reflected in the graph.
const unusedBuffer = backingBuffer.transfer();
const b = builder.input('b', {dataType: 'float32', shape: [2]});
const c = builder.add(a, b);
const [graph, bTensor, cTensor] = await Promise.all([
builder.build({c}),
context.createTensor({dataType: 'float32', shape: [2], writable: true}),
context.createTensor({dataType: 'float32', shape: [2], readable: true})
]);
context.writeTensor(bTensor, new Float32Array([5, 7]));
context.dispatch(graph, {'b': bTensor}, {'c': cTensor});
const result = new Float32Array(await context.readTensor(cTensor));
assert_array_equals(result, new Float32Array([7, 10]));
}, 'Constant data is unaffected by detaching the buffer');
promise_test(async t => {
const builder = new MLGraphBuilder(context);
let aBuffer = new Float32Array([2, 3]);
const a = builder.constant({dataType: 'float32', shape: [2]}, aBuffer);
// Rewrite `aBuffer` contents. Constant data should already be copied, so
// changes to the buffer afterwards should not be reflected in the graph.
aBuffer[0] = 10;
aBuffer[1] = 20;
const b = builder.input('b', {dataType: 'float32', shape: [2]});
const c = builder.add(a, b);
const [graph, bTensor, cTensor] = await Promise.all([
builder.build({c}),
context.createTensor({dataType: 'float32', shape: [2], writable: true}),
context.createTensor({dataType: 'float32', shape: [2], readable: true})
]);
context.writeTensor(bTensor, new Float32Array([5, 7]));
context.dispatch(graph, {'b': bTensor}, {'c': cTensor});
const result = new Float32Array(await context.readTensor(cTensor));
assert_array_equals(result, new Float32Array([7, 10]));
}, 'Constant data is unaffected by changes to the buffer contents');
promise_test(async t => {
const builder = new MLGraphBuilder(context);
let backingBuffer = new ArrayBuffer(8);
const aBuffer = new Float32Array(backingBuffer, 0, 2);
// Detach `aBuffer` _before_ calling `constant()`. This should throw, since
// detached buffers have a length of zero, which does not match the length of
// the descriptor. See
// https://webidl.spec.whatwg.org/#dfn-get-buffer-source-copy
const unusedBuffer = backingBuffer.transfer();
assert_throws_js(
TypeError,
() => builder.constant({dataType: 'float32', shape: [2]}, aBuffer));
}, 'Constant data cannot use a detached buffer, which is empty');