Update web-platform-tests to revision 2b7dace05fc1869398ee24f84fda4c0e4c0455ae

tests/wpt/web-platform-tests/encoding/streams/readable-writable-properties.any.js

@@ -0,0 +1,22 @@
+// META: global=worker
+
+// This just tests that the "readable" and "writable" properties pass the brand
+// checks. All other relevant attributes are covered by the IDL tests.
+
+'use strict';
+
+test(() => {
+  const te = new TextEncoderStream();
+  assert_equals(typeof ReadableStream.prototype.getReader.call(te.readable),
+                'object', 'readable property must pass brand check');
+  assert_equals(typeof WritableStream.prototype.getWriter.call(te.writable),
+                'object', 'writable property must pass brand check');
+}, 'TextEncoderStream readable and writable properties must pass brand checks');
+
+test(() => {
+  const td = new TextDecoderStream();
+  assert_equals(typeof ReadableStream.prototype.getReader.call(td.readable),
+                'object', 'readable property must pass brand check');
+  assert_equals(typeof WritableStream.prototype.getWriter.call(td.writable),
+                'object', 'writable property must pass brand check');
+}, 'TextDecoderStream readable and writable properties must pass brand checks');