1 files changed, 94 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-streams-highwatermark.js b/tests/node_compat/test/parallel/test-streams-highwatermark.js
new file mode 100644
index 000000000..9245f7db0
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-streams-highwatermark.js
@@ -0,0 +1,94 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+const common = require('../common');
+
+const assert = require('assert');
+const stream = require('stream');
+const { inspect } = require('util');
+
+{
+  // This test ensures that the stream implementation correctly handles values
+  // for highWaterMark which exceed the range of signed 32 bit integers and
+  // rejects invalid values.
+
+  // This number exceeds the range of 32 bit integer arithmetic but should still
+  // be handled correctly.
+  const ovfl = Number.MAX_SAFE_INTEGER;
+
+  const readable = stream.Readable({ highWaterMark: ovfl });
+  assert.strictEqual(readable._readableState.highWaterMark, ovfl);
+
+  const writable = stream.Writable({ highWaterMark: ovfl });
+  assert.strictEqual(writable._writableState.highWaterMark, ovfl);
+
+  for (const invalidHwm of [true, false, '5', {}, -5, NaN]) {
+    for (const type of [stream.Readable, stream.Writable]) {
+      assert.throws(() => {
+        type({ highWaterMark: invalidHwm });
+      }, {
+        name: 'TypeError',
+        code: 'ERR_INVALID_ARG_VALUE',
+        message: "The property 'options.highWaterMark' is invalid. " +
+          `Received ${inspect(invalidHwm)}`
+      });
+    }
+  }
+}
+
+{
+  // This test ensures that the push method's implementation
+  // correctly handles the edge case where the highWaterMark and
+  // the state.length are both zero
+
+  const readable = stream.Readable({ highWaterMark: 0 });
+
+  for (let i = 0; i < 3; i++) {
+    const needMoreData = readable.push();
+    assert.strictEqual(needMoreData, true);
+  }
+}
+
+{
+  // This test ensures that the read(n) method's implementation
+  // correctly handles the edge case where the highWaterMark, state.length
+  // and n are all zero
+
+  const readable = stream.Readable({ highWaterMark: 0 });
+
+  readable._read = common.mustCall();
+  readable.read(0);
+}
+
+{
+  // Parse size as decimal integer
+  ['1', '1.0', 1].forEach((size) => {
+    const readable = new stream.Readable({
+      read: common.mustCall(),
+      highWaterMark: 0,
+    });
+    readable.read(size);
+
+    assert.strictEqual(readable._readableState.highWaterMark, Number(size));
+  });
+}
+
+{
+  // Test highwatermark limit
+  const hwm = 0x40000000 + 1;
+  const readable = stream.Readable({
+    read() {},
+  });
+
+  assert.throws(() => readable.read(hwm), common.expectsError({
+    code: 'ERR_OUT_OF_RANGE',
+    message: 'The value of "size" is out of range.' +
+             ' It must be <= 1GiB. Received ' +
+             hwm,
+  }));
+}