From c09baca6fde431e810fd01968b17a830dce6af01 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Fri, 10 Jun 2016 16:52:49 -0400
Subject: [PATCH] Make sure padding and margin can accept 0 to mean 0px. 
 Resolves issue #244

---
 lib/patch/jsdom.js | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/lib/patch/jsdom.js b/lib/patch/jsdom.js
index add83bd7..e88d8b9a 100644
--- a/lib/patch/jsdom.js
+++ b/lib/patch/jsdom.js
@@ -49,7 +49,7 @@ var PADDING = (function () {
 
   var isValid = function (v) {
     var type = parsers.valueType(v);
-    return type === TYPES.LENGTH || type === TYPES.PERCENT;
+    return type === TYPES.LENGTH || type === TYPES.PERCENT || type === TYPES.INTEGER;
   };
 
   var parser = function (v) {
@@ -101,7 +101,7 @@ var MARGIN = (function () {
   var isValid = function (v) {
     if (v.toLowerCase() === "auto") return true;
     var type = parsers.valueType(v);
-    return type === TYPES.LENGTH || type === TYPES.PERCENT;
+    return type === TYPES.LENGTH || type === TYPES.PERCENT || type === TYPES.INTEGER;
   };
 
   var parser = function (v) {
@@ -311,9 +311,14 @@ exports.patch = function (jsdom) {
       nodeName: {get: function() {return this.name}}
     });
   }
+  
   //
   //  Fix CSSStyleDeclaration properties that are broken (padding, margin, width)
   //
+
+  //
+  //  Check if padding resets paddingTop
+  //
   div.style.paddingTop = "10px";
   div.style.padding = "1px";
   if (div.style.paddingTop !== "1px") {
@@ -323,6 +328,21 @@ exports.patch = function (jsdom) {
       margin: MARGIN.definition
     });
   }
+  //
+  //  Check if pixels without "px" are OK
+  //
+  div.style.padding = "";
+  div.style.padding = "1px 2 3px 4";
+  if (div.style.padding !== "1px 2 3px 4") {
+    var core = require("jsdom/lib/jsdom/level1/core");
+    Object.defineProperties(core.CSSStyleDeclaration.prototype,{
+      padding: PADDING.definition,
+      margin: MARGIN.definition
+    });
+  }
+  //
+  //  Check if paddingTop sets padding
+  //
   div.style.padding = "1px 2px 3px 4px";
   div.style.paddingTop = "10px";
   if (div.style.padding !== "10px 2px 3px 4px") {
@@ -378,11 +398,17 @@ exports.patch = function (jsdom) {
       }
     });
   }
+  //
+  //  Check if width can be "auto"
+  //
   div.style.width = "auto";
   if (div.style.width !== "auto") {
     var core = require("jsdom/lib/jsdom/level1/core");
     Object.defineProperties(core.CSSStyleDeclaration.prototype,{width: WIDTH});
   }
+  //
+  //  Check if units of ex are allowed
+  //
   div.style.marginTop = "3ex";
   if (div.style.marginTop !== "3ex") FixValueType();
 }