From 211a668ddc6756718e107c9ff1fe64ef3871f5e5 Mon Sep 17 00:00:00 2001
From: Svetlana Linuxenko <linuxenko@yahoo.com>
Date: Wed, 29 Mar 2017 09:25:31 +0300
Subject: [PATCH] Update components props fix

---
 lib/h.js                    |  8 +++++++-
 package.json                |  2 +-
 tests/mocha-tests/h.test.js | 16 ++++++++++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/lib/h.js b/lib/h.js
index 078e363..52969c4 100644
--- a/lib/h.js
+++ b/lib/h.js
@@ -19,7 +19,13 @@ var H = function (argv) {
       }
 
       if (typeof argv === 'object' && typeof argv.render === 'function') {
-        argv.props = arguments[1] || {};
+        if ('props' in argv) {
+          for (var i in arguments[1]) {
+            argv.props[i] = arguments[1][i];
+          }
+        } else {
+          argv.props = arguments[1];
+        }
         argv.props.children = [].slice.call(arguments, 2, arguments.length);
         return argv.render.call(argv, argv.props);
       }
diff --git a/package.json b/package.json
index bc7af5c..a8e9568 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "basic-virtual-dom",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Basic virtual dom implementation",
   "main": "index.js",
   "files": [
diff --git a/tests/mocha-tests/h.test.js b/tests/mocha-tests/h.test.js
index 666f37b..63c8ce8 100644
--- a/tests/mocha-tests/h.test.js
+++ b/tests/mocha-tests/h.test.js
@@ -147,4 +147,20 @@ describe('Test h()', function() {
     expect(cl.children[0].children[0].children).to.be.equal('hello');
     expect(cl.children[0].children[1].children).to.be.equal('world');
   });
+
+  it('should only update props', function() {
+    var Nested = {
+      props: { ownProp: 'keepme' },
+      render: function() {
+        return h('div', null, this.props.name, this.props.children, this.props.ownProp);
+      }
+    };
+
+    var cl = h('div', null, h(Nested, {name: 'hello'}, 'world'));
+
+    expect(cl.children[0].children.length).to.be.equal(3);
+    expect(cl.children[0].children[0].children).to.be.equal('hello');
+    expect(cl.children[0].children[1].children).to.be.equal('world');
+    expect(cl.children[0].children[2].children).to.be.equal('keepme');
+  });
 });