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test/parallel/test-stream-wrap-encoding.js

@@ -0,0 +1,43 @@
+// Flags: --expose-internals
+'use strict';
+const common = require('../common');
+
+const StreamWrap = require('internal/js_stream_socket');
+const Duplex = require('stream').Duplex;
+
+{
+  const stream = new Duplex({
+    read() {},
+    write() {}
+  });
+
+  stream.setEncoding('ascii');
+
+  const wrap = new StreamWrap(stream);
+
+  wrap.on('error', common.expectsError({
+    name: 'Error',
+    code: 'ERR_STREAM_WRAP',
+    message: 'Stream has StringDecoder set or is in objectMode'
+  }));
+
+  stream.push('ohai');
+}
+
+{
+  const stream = new Duplex({
+    read() {},
+    write() {},
+    objectMode: true
+  });
+
+  const wrap = new StreamWrap(stream);
+
+  wrap.on('error', common.expectsError({
+    name: 'Error',
+    code: 'ERR_STREAM_WRAP',
+    message: 'Stream has StringDecoder set or is in objectMode'
+  }));
+
+  stream.push(new Error('foo'));
+}