test: add coverage for socket write after close

This commit adds test coverage for the scenario where a socket's handle has been closed prior to writing. PR-URL: #13171 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
nodejs · cjihrig · May 26, 2017 · May 23, 2017 · May 26, 2017 · 6a18c1d8dd034767f86bc496e292ecb0dddf944f
commit 6a18c1d8dd034767f86bc496e292ecb0dddf944f
diff --git a/test/parallel/test-net-socket-write-after-close.js b/test/parallel/test-net-socket-write-after-close.js
@@ -0,0 +1,39 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+
+{
+  const server = net.createServer();
+
+  server.listen(common.mustCall(() => {
+    const port = server.address().port;
+    const client = net.connect({port}, common.mustCall(() => {
+      client.on('error', common.mustCall((err) => {
+        server.close();
+        assert.strictEqual(err.constructor, Error);
+        assert.strictEqual(err.message, 'write EBADF');
+      }));
+      client._handle.close();
+      client.write('foo');
+    }));
+  }));
+}
+
+{
+  const server = net.createServer();
+
+  server.listen(common.mustCall(() => {
+    const port = server.address().port;
+    const client = net.connect({port}, common.mustCall(() => {
+      client.on('error', common.mustCall((err) => {
+        server.close();
+        assert.strictEqual(err.constructor, Error);
+        assert.strictEqual(err.message, 'This socket is closed');
+      }));
+      client._handle.close();
+      client._handle = null;
+      client.write('foo');
+    }));
+  }));
+}