From bcac468f7c84d75cca0757d7e5aa1948a65c7709 Mon Sep 17 00:00:00 2001
From: Ian Storm Taylor <ian@ianstormtaylor.com>
Date: Fri, 8 Aug 2014 12:37:04 -0700
Subject: [PATCH] add the ability to pass `props` to `context.throw`

---
 lib/context.js        |  8 +++++++-
 test/context/throw.js | 16 ++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/lib/context.js b/lib/context.js
index b5b7c81..0c3ea57 100644
--- a/lib/context.js
+++ b/lib/context.js
@@ -63,10 +63,11 @@ var proto = module.exports = {
    *
    * @param {String|Number|Error} err, msg or status
    * @param {String|Number|Error} err, msg or status
+   * @param {Object} [props]
    * @api public
    */
 
-  throw: function(msg, status){
+  throw: function(msg, status, props){
     if ('number' == typeof msg) {
       var tmp = msg;
       msg = status || http.STATUS_CODES[tmp];
@@ -76,6 +77,11 @@ var proto = module.exports = {
     var err = msg instanceof Error ? msg : new Error(msg);
     err.status = status || err.status || 500;
     err.expose = 'number' == typeof err.status && http.STATUS_CODES[err.status] && err.status < 500;
+
+    if (props) {
+      for (var key in props) err[key] = props[key];
+    }
+
     throw err;
   },
 
diff --git a/test/context/throw.js b/test/context/throw.js
index ce332ac..7c49259 100644
--- a/test/context/throw.js
+++ b/test/context/throw.js
@@ -124,3 +124,19 @@ describe('ctx.throw(status)', function(){
     })
   })
 })
+
+describe('ctx.throw(status, msg, props)', function(){
+  it('should mixin props', function(done){
+    var ctx = context();
+
+    try {
+      ctx.throw(400, 'msg', { prop: true });
+    } catch (err) {
+      assert('msg' == err.message);
+      assert(400 == err.status);
+      assert(true === err.expose);
+      assert(true === err.prop);
+      done();
+    }
+  })
+})
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