Add space before cookie attributes

According to RFC-6265 that there should be a space between the ; and
the attribute name, i.e. the header should be something like
name=value; Domain=localhost; HttpOnly rather than
name=value;Domain=localhost;HttpOnly

Issue: SPR-15225

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

@@ -328,25 +328,25 @@ public class MockHttpServletResponse implements HttpServletResponse {
 		StringBuilder buf = new StringBuilder();
 		buf.append(cookie.getName()).append('=').append(cookie.getValue() == null ? "" : cookie.getValue());
 		if (StringUtils.hasText(cookie.getPath())) {
-			buf.append(";Path=").append(cookie.getPath());
+			buf.append("; Path=").append(cookie.getPath());
 		}
 		if (StringUtils.hasText(cookie.getDomain())) {
-			buf.append(";Domain=").append(cookie.getDomain());
+			buf.append("; Domain=").append(cookie.getDomain());
 		}
 		int maxAge = cookie.getMaxAge();
 		if (maxAge >= 0) {
-			buf.append(";Max-Age=").append(maxAge);
-			buf.append(";Expires=");
+			buf.append("; Max-Age=").append(maxAge);
+			buf.append("; Expires=");
 			HttpHeaders headers = new HttpHeaders();
 			headers.setExpires(maxAge > 0 ? System.currentTimeMillis() + 1000L * maxAge : 0);
 			buf.append(headers.getFirst(HttpHeaders.EXPIRES));
 		}
 
 		if (cookie.getSecure()) {
-			buf.append(";Secure");
+			buf.append("; Secure");
 		}
 		if (cookie.isHttpOnly()) {
-			buf.append(";HttpOnly");
+			buf.append("; HttpOnly");
 		}
 		return buf.toString();
 	}

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

@@ -168,9 +168,9 @@ public class MockHttpServletResponseTests {
 
 		response.addCookie(cookie);
 
-		assertEquals("foo=bar;Path=/path;Domain=example.com;" +
-				"Max-Age=0;Expires=Thu, 01 Jan 1970 00:00:00 GMT;" +
-				"Secure;HttpOnly", response.getHeader(HttpHeaders.SET_COOKIE));
+		assertEquals("foo=bar; Path=/path; Domain=example.com; " +
+				"Max-Age=0; Expires=Thu, 01 Jan 1970 00:00:00 GMT; " +
+				"Secure; HttpOnly", response.getHeader(HttpHeaders.SET_COOKIE));
 	}
 
 	@Test

spring-test/src/test/java/org/springframework/test/web/servlet/htmlunit/MockWebResponseBuilderTests.java

@@ -116,8 +116,8 @@ public class MockWebResponseBuilderTests {
 		assertThat(header.getValue(), equalTo("value"));
 		header = responseHeaders.get(2);
 		assertThat(header.getName(), equalTo("Set-Cookie"));
-		assertThat(header.getValue(), startsWith("cookieA=valueA;Path=/path;Domain=domain;Max-Age=1800;Expires="));
-		assertThat(header.getValue(), endsWith(";Secure;HttpOnly"));
+		assertThat(header.getValue(), startsWith("cookieA=valueA; Path=/path; Domain=domain; Max-Age=1800; Expires="));
+		assertThat(header.getValue(), endsWith("; Secure; HttpOnly"));
 	}
 
 	// SPR-14169

spring-test/src/test/java/org/springframework/test/web/servlet/result/PrintingResultHandlerTests.java

@@ -120,7 +120,7 @@ public class PrintingResultHandlerTests {
 		assertEquals(2, cookieValues.size());
 		assertEquals("cookie=cookieValue", cookieValues.get(0));
 		assertTrue("Actual: " + cookieValues.get(1), cookieValues.get(1).startsWith(
-				"enigma=42;Path=/crumbs;Domain=.example.com;Max-Age=1234;Expires="));
+				"enigma=42; Path=/crumbs; Domain=.example.com; Max-Age=1234; Expires="));
 
 		HttpHeaders headers = new HttpHeaders();
 		headers.set("header", "headerValue");

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

@@ -328,25 +328,25 @@ public class MockHttpServletResponse implements HttpServletResponse {
 		StringBuilder buf = new StringBuilder();
 		buf.append(cookie.getName()).append('=').append(cookie.getValue() == null ? "" : cookie.getValue());
 		if (StringUtils.hasText(cookie.getPath())) {
-			buf.append(";Path=").append(cookie.getPath());
+			buf.append("; Path=").append(cookie.getPath());
 		}
 		if (StringUtils.hasText(cookie.getDomain())) {
-			buf.append(";Domain=").append(cookie.getDomain());
+			buf.append("; Domain=").append(cookie.getDomain());
 		}
 		int maxAge = cookie.getMaxAge();
 		if (maxAge >= 0) {
-			buf.append(";Max-Age=").append(maxAge);
-			buf.append(";Expires=");
+			buf.append("; Max-Age=").append(maxAge);
+			buf.append("; Expires=");
 			HttpHeaders headers = new HttpHeaders();
 			headers.setExpires(maxAge > 0 ? System.currentTimeMillis() + 1000L * maxAge : 0);
 			buf.append(headers.getFirst(HttpHeaders.EXPIRES));
 		}
 
 		if (cookie.getSecure()) {
-			buf.append(";Secure");
+			buf.append("; Secure");
 		}
 		if (cookie.isHttpOnly()) {
-			buf.append(";HttpOnly");
+			buf.append("; HttpOnly");
 		}
 		return buf.toString();
 	}