diff --git a/Tests/LibWeb/Text/expected/wpt-import/streams/piping/general-addition.any.txt b/Tests/LibWeb/Text/expected/wpt-import/streams/piping/general-addition.any.txt
new file mode 100644
index 00000000000..384673a5c59
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/streams/piping/general-addition.any.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Fail
+Fail enqueue() must not synchronously call write algorithm
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.html b/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.html
new file mode 100644
index 00000000000..52c1cde1702
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.html
@@ -0,0 +1,15 @@
+
+
+
+
+
+
+
+
+
diff --git a/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.js b/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.js
new file mode 100644
index 00000000000..cf4aa9bea6a
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/streams/piping/general-addition.any.js
@@ -0,0 +1,15 @@
+// META: global=window,worker,shadowrealm
+'use strict';
+
+promise_test(async t => {
+ /** @type {ReadableStreamDefaultController} */
+ var con;
+ let synchronous = false;
+ new ReadableStream({ start(c) { con = c }}, { highWaterMark: 0 }).pipeTo(
+ new WritableStream({ write() { synchronous = true; } })
+ )
+ // wait until start algorithm finishes
+ await Promise.resolve();
+ con.enqueue();
+ assert_false(synchronous, 'write algorithm must not run synchronously');
+}, "enqueue() must not synchronously call write algorithm");