kitesurf · WPT

FAIL
expected FAIL · 1567 ms
▶ run in kitesurf
Test
/streams/writable-streams/constructor.any.html
Actual
FAIL
Expected
FAIL
Unexpected
no
Duration
1567 ms
Harness
OK
Counts
Reason
Run
https://kitesurf.rendering.cfdata.org/?url=http%3A%2F%2Fwpt.live%2Fstreams%2Fwritable-streams%2Fconstructor.any.html ↗
Upstream
view on github.com/web-platform-tests/wpt ↗

Subtests

statussubtestmessage
FAILcontroller argument should be passed to start methodassert_equals: desiredSize should be null expected (object) null but got (number) 1
PASScontroller argument should be passed to write method
PASScontroller argument should not be passed to close method
PASShighWaterMark should be reflected to desiredSize
FAILWritableStream should be writable and ready should fulfill immediately if the strategy does not apply backpressureThe value cannot be converted because it is not an integer.
PASSWritableStream should be constructible with no arguments
FAILWritableStream can't be constructed with a defined typeassert_throws_js: constructor should throw function "() => new WritableStream({ type: 'bytes' })" did not throw
FAILunderlyingSink argument should be converted after queuingStrategy argumentassert_throws_exactly: function "() => new WritableStream(underlyingSink, queuingStrategy)" threw object "error1: error1" but we expected it to throw object "error2: error2"
PASSWritableStream instances should have standard methods and properties
PASSWritableStreamDefaultController constructor should throw
PASSWritableStreamDefaultController constructor should throw when passed an initialised WritableStream
PASSWritableStreamDefaultWriter should throw unless passed a WritableStream
PASSWritableStreamDefaultWriter constructor should throw when stream argument is locked

bundle built 2026-07-16T07:16:48.063Z