From 5734a60c2bff80f6823a54c56b1de563529e5971 Mon Sep 17 00:00:00 2001
From: Scott Feeney <scott@oceanbase.org>
Date: Fri, 29 Nov 2024 21:16:03 -0800
Subject: [PATCH] add createReadStream test

---
 src/__tests__/volume.test.ts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/__tests__/volume.test.ts b/src/__tests__/volume.test.ts
index 5f132e8e..75abb2ae 100644
--- a/src/__tests__/volume.test.ts
+++ b/src/__tests__/volume.test.ts
@@ -1444,4 +1444,29 @@ describe('volume', () => {
       });
     });
   });
+  describe('.createReadStream', () => {
+    it('accepts filehandle as fd option', done => {
+      const vol = Volume.fromJSON({
+        '/test.txt': 'Hello',
+      });
+      vol.promises.open('/test.txt', 'r').then(fh => {
+        const readStream = vol.createReadStream(
+          '/this/should/be/ignored',
+          { fd: fh },
+        );
+        readStream.setEncoding('utf8');
+        let readData = '';
+        readStream.on('readable', () => {
+          const chunk = readStream.read();
+          if (chunk != null) readData += chunk;
+        });
+        readStream.on('end', () => {
+          expect(readData).toEqual('Hello');
+          done();
+        });
+      }).catch((err) => {
+        expect(err).toBeNull();
+      });
+    });
+  });
 });