MockHttpServletResponse.setIntHeader supports 'Content-Length' header as well

Issue: SPR-13752
(cherry picked from commit a4f5c46f)

spring-test/src/main/java/org/springframework/mock/web/MockHttpServletResponse.java

 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -506,11 +506,12 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	private boolean setSpecialHeader(String name, Object value) {
 		if (CONTENT_TYPE_HEADER.equalsIgnoreCase(name)) {
-			setContentType((String) value);
+			setContentType(value.toString());
 			return true;
 		}
 		else if (CONTENT_LENGTH_HEADER.equalsIgnoreCase(name)) {
-			setContentLength(Integer.parseInt((String) value));
+			setContentLength(value instanceof Number ? ((Number) value).intValue() :
+					Integer.parseInt(value.toString()));
 			return true;
 		}
 		else {

spring-test/src/test/java/org/springframework/mock/web/MockHttpServletResponseTests.java

 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -122,6 +122,13 @@ public class MockHttpServletResponseTests {
 		assertEquals("66", response.getHeader("Content-Length"));
 	}
 
+	@Test
+	public void contentLengthIntHeader() {
+		response.addIntHeader("Content-Length", 66);
+		assertEquals(66, response.getContentLength());
+		assertEquals("66", response.getHeader("Content-Length"));
+	}
+
 	@Test
 	public void httpHeaderNameCasingIsPreserved() throws Exception {
 		final String headerName = "Header1";
@@ -221,20 +228,14 @@ public class MockHttpServletResponseTests {
 		assertEquals(redirectUrl, response.getRedirectedUrl());
 	}
 
-	/**
-	 * SPR-10414
-	 */
-	@Test
+	@Test  // SPR-10414
 	public void modifyStatusAfterSendError() throws IOException {
 		response.sendError(HttpServletResponse.SC_NOT_FOUND);
 		response.setStatus(HttpServletResponse.SC_OK);
 		assertEquals(response.getStatus(),HttpServletResponse.SC_NOT_FOUND);
 	}
 
-	/**
-	 * SPR-10414
-	 */
-	@Test
+	@Test  // SPR-10414
 	@SuppressWarnings("deprecation")
 	public void modifyStatusMessageAfterSendError() throws IOException {
 		response.sendError(HttpServletResponse.SC_NOT_FOUND);

spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletResponse.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -71,7 +71,7 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	private boolean charset = false;
 
-	private final ByteArrayOutputStream content = new ByteArrayOutputStream();
+	private final ByteArrayOutputStream content = new ByteArrayOutputStream(1024);
 
 	private final ServletOutputStream outputStream = new ResponseServletOutputStream(this.content);
 
@@ -189,8 +189,8 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	public String getContentAsString() throws UnsupportedEncodingException {
 		flushBuffer();
-		return (this.characterEncoding != null) ?
-				this.content.toString(this.characterEncoding) : this.content.toString();
+		return (this.characterEncoding != null ?
+				this.content.toString(this.characterEncoding) : this.content.toString());
 	}
 
 	@Override
@@ -218,8 +218,7 @@ public class MockHttpServletResponse implements HttpServletResponse {
 		if (contentType != null) {
 			int charsetIndex = contentType.toLowerCase().indexOf(CHARSET_PREFIX);
 			if (charsetIndex != -1) {
-				String encoding = contentType.substring(charsetIndex + CHARSET_PREFIX.length());
-				this.characterEncoding = encoding;
+				this.characterEncoding = contentType.substring(charsetIndex + CHARSET_PREFIX.length());
 				this.charset = true;
 			}
 			updateContentTypeHeader();
@@ -416,11 +415,13 @@ public class MockHttpServletResponse implements HttpServletResponse {
 	}
 
 	@Override
+	@Deprecated
 	public String encodeUrl(String url) {
 		return encodeURL(url);
 	}
 
 	@Override
+	@Deprecated
 	public String encodeRedirectUrl(String url) {
 		return encodeRedirectURL(url);
 	}
@@ -505,11 +506,12 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	private boolean setSpecialHeader(String name, Object value) {
 		if (CONTENT_TYPE_HEADER.equalsIgnoreCase(name)) {
-			setContentType((String) value);
+			setContentType(value.toString());
 			return true;
 		}
 		else if (CONTENT_LENGTH_HEADER.equalsIgnoreCase(name)) {
-			setContentLength(Integer.parseInt((String) value));
+			setContentLength(value instanceof Number ? ((Number) value).intValue() :
+					Integer.parseInt(value.toString()));
 			return true;
 		}
 		else {
@@ -534,14 +536,15 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	@Override
 	public void setStatus(int status) {
-		if(!this.isCommitted()) {
+		if (!this.isCommitted()) {
 			this.status = status;
 		}
 	}
 
 	@Override
+	@Deprecated
 	public void setStatus(int status, String errorMessage) {
-		if(!this.isCommitted()) {
+		if (!this.isCommitted()) {
 			this.status = status;
 			this.errorMessage = errorMessage;
 		}