Issue 515 (#516)

* Issue 515 Adding tests for getCookies

No class changes at this time. Implementing initial tests.

* Preventing Null Cookie Name Issue #515

Per kkwall's recommendation, the getValidInput allowNull flag has been
updated to false to invalidate cookies with null names.

Tests have been updated to account for functional change.

Author: jeremiahjstacey

src/main/java/org/owasp/esapi/filters/SecurityWrapperRequest.java

@@ -154,7 +154,7 @@ public Cookie[] getCookies() {
             // build a new clean cookie
             try {
                 // get data from original cookie
-                String name = ESAPI.validator().getValidInput("Cookie name: " + c.getName(), c.getName(), "HTTPCookieName", sc.getIntProp("HttpUtilities.MaxHeaderNameSize"), true);
+                String name = ESAPI.validator().getValidInput("Cookie name: " + c.getName(), c.getName(), "HTTPCookieName", sc.getIntProp("HttpUtilities.MaxHeaderNameSize"), false);
                 String value = ESAPI.validator().getValidInput("Cookie value: " + c.getValue(), c.getValue(), "HTTPCookieValue", sc.getIntProp("HttpUtilities.MaxHeaderValueSize"), true);
                 int maxAge = c.getMaxAge();
                 String domain = c.getDomain();