Add getRequestHeader method with test. Needs to be made case-insensitive.

Author: driverdan

lib/XMLHttpRequest.js

@@ -218,6 +218,21 @@ exports.XMLHttpRequest = function() {
     return result.substr(0, result.length - 2);
   };
 
+  /**
+   * Gets a request header
+   *
+   * @param string name Name of header to get
+   * @return string Returns the request header or empty string if not set
+   */
+  this.getRequestHeader = function(name) {
+    // @TODO Make this case insensitive
+    if (typeof name === "string" && headers[name]) {
+      return headers[name];
+    }
+
+    return "";
+  }
+
   /**
    * Sends the request to the server.
    *

tests/test-headers.js

@@ -50,6 +50,8 @@ assert.equal(null, xhr.getResponseHeader("Content-Type"));
 try {
   xhr.open("GET", "http://localhost:8000/");
   xhr.setRequestHeader("X-Test", "Foobar");
+  // Test getRequestHeader
+  assert.equal("Foobar", xhr.getRequestHeader("X-Test"));
   xhr.send();
 } catch(e) {
   console.log("ERROR: Exception raised", e);