padding and stretch

spec/LayoutSpec.js

@@ -501,6 +501,17 @@ describe('Layout', function() {
     );
   });
 
+  it('should layout node with padding and stretch', function() {
+    testLayout(
+      {style: {}, children: [
+        {style: {padding: 10, alignSelf: 'stretch'}}
+      ]},
+      {width: 20, height: 20, top: 0, left: 0, children: [
+        {width: 20, height: 20, top: 0, left: 0}
+      ]}
+    );
+  });
+
   it('should layout randomly', function() {
     function RNG(seed) {
       this.state = seed;

src/Layout.js

@@ -204,7 +204,9 @@ function computeLayout(node) {
       } else if (alignItem === 'stretch') {
         child.layout[dim[crossAxis]] += node.layout[dim[crossAxis]] -
           getMargin(child, leading[crossAxis]) -
-          getMargin(child, trailing[crossAxis]);
+          getMargin(child, trailing[crossAxis]) -
+          getPadding(child, leading[crossAxis]) -
+          getPadding(child, trailing[crossAxis]);
       }
       child.layout[pos[crossAxis]] += leadingCrossDim;
     });