From 8b9dbdad272d58b3db7cfa8956dad6b7db5d7c0e Mon Sep 17 00:00:00 2001
From: isaacs <i@izs.me>
Date: Thu, 17 Feb 2011 17:38:36 -0800
Subject: [PATCH] Closes GH-687 Don't read fs read stream if not open

---
 lib/fs.js                          | 3 +++
 test/simple/test-fs-read-stream.js | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/lib/fs.js b/lib/fs.js
index 62712d57f8..3eb31a99fc 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -921,6 +921,9 @@ ReadStream.prototype.resume = function() {
     this.buffer = null;
   }
 
+  // hasn't opened yet.
+  if (null == this.fd) return;
+
   this._read();
 };
 
diff --git a/test/simple/test-fs-read-stream.js b/test/simple/test-fs-read-stream.js
index b152eed309..026afcb2a0 100644
--- a/test/simple/test-fs-read-stream.js
+++ b/test/simple/test-fs-read-stream.js
@@ -119,3 +119,8 @@ stream.on('data', function(chunk) {
 stream.on('end', function() {
   assert.equal('x', stream.data);
 });
+
+// pause and then resume immediately.
+var pauseRes = fs.createReadStream(rangeFile);
+pauseRes.pause();
+pauseRes.resume();