1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js b/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js
new file mode 100644
index 0000000000..21d61427a2
--- /dev/null
+++ b/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js
@@ -0,0 +1,38 @@
+// META: global=window,worker,shadowrealm
+
+'use strict';
+
+const badChunks = [
+  {
+    name: 'undefined',
+    value: undefined
+  },
+  {
+    name: 'null',
+    value: null
+  },
+  {
+    name: 'numeric',
+    value: 3.14
+  },
+  {
+    name: 'object, not BufferSource',
+    value: {}
+  },
+  {
+    name: 'array',
+    value: [65]
+  }
+];
+
+for (const chunk of badChunks) {
+  promise_test(async t => {
+    const tds = new TextDecoderStream();
+    const reader = tds.readable.getReader();
+    const writer = tds.writable.getWriter();
+    const writePromise = writer.write(chunk.value);
+    const readPromise = reader.read();
+    await promise_rejects_js(t, TypeError, writePromise, 'write should reject');
+    await promise_rejects_js(t, TypeError, readPromise, 'read should reject');
+  }, `chunk of type ${chunk.name} should error the stream`);
+}