diff --git a/core/src/test/java/org/springframework/ws/transport/StubTransportOutputstream.java b/core/src/test/java/org/springframework/ws/transport/StubTransportOutputstream.java
new file mode 100644
index 00000000..3e9e568c
--- /dev/null
+++ b/core/src/test/java/org/springframework/ws/transport/StubTransportOutputstream.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2006 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.ws.transport;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.util.Assert;
+
+public class StubTransportOutputStream extends TransportOutputStream {
+
+    private Map headers = new HashMap();
+
+    private OutputStream outputStream;
+
+    public StubTransportOutputStream(OutputStream outputStream) {
+        Assert.notNull(outputStream, "outputStream must not be null");
+        this.outputStream = outputStream;
+    }
+
+    protected OutputStream getOutputStream() throws IOException {
+        return outputStream;
+    }
+
+    public Map getHeaders() {
+        return headers;
+    }
+
+    public void addHeader(String name, String value) throws IOException {
+        headers.put(name, value);
+    }
+}