From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 11:22:09 +0200 Subject: Adding upstream version 110.0.1. Signed-off-by: Daniel Baumann --- .../web-platform/tests/serial/resources/common.js | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 testing/web-platform/tests/serial/resources/common.js (limited to 'testing/web-platform/tests/serial/resources/common.js') diff --git a/testing/web-platform/tests/serial/resources/common.js b/testing/web-platform/tests/serial/resources/common.js new file mode 100644 index 0000000000..5177f83a86 --- /dev/null +++ b/testing/web-platform/tests/serial/resources/common.js @@ -0,0 +1,33 @@ +// Compare two Uint8Arrays. +function compareArrays(actual, expected) { + assert_true(actual instanceof Uint8Array, 'actual is Uint8Array'); + assert_true(expected instanceof Uint8Array, 'expected is Uint8Array'); + assert_equals(actual.byteLength, expected.byteLength, 'lengths equal'); + for (let i = 0; i < expected.byteLength; ++i) + assert_equals(actual[i], expected[i], `Mismatch at position ${i}.`); +} + +// Reads from |reader| until at least |targetLength| is read or the stream is +// closed. The data is returned as a combined Uint8Array. +async function readWithLength(reader, targetLength) { + const chunks = []; + let actualLength = 0; + + while (true) { + let {value, done} = await reader.read(); + chunks.push(value); + actualLength += value.byteLength; + + if (actualLength >= targetLength || done) { + // It would be better to allocate |buffer| up front with the number of + // of bytes expected but this is the best that can be done without a + // BYOB reader to control the amount of data read. + const buffer = new Uint8Array(actualLength); + chunks.reduce((offset, chunk) => { + buffer.set(chunk, offset); + return offset + chunk.byteLength; + }, 0); + return buffer; + } + } +} -- cgit v1.2.3