Edge attributes also

Author: mdaines

packages/viz/test/graph-objects.test.js

@@ -280,10 +280,13 @@ describe("Viz", function() {
         subgraphs: [
           {
             graphAttributes: {
-              color: "green"
+              color: "red"
             },
             nodeAttributes: {
-              color: "red"
+              color: "green"
+            },
+            edgeAttributes: {
+              color: "blue"
             },
             nodes: [
               { name: "a" }
@@ -298,8 +301,9 @@ describe("Viz", function() {
 	graph [bb="0,0,54,36"];
 	node [label="\\N"];
 	{
-		graph [color=green];
-		node [color=red];
+		graph [color=red];
+		node [color=green];
+		edge [color=blue];
 		a	[height=0.5,
 			pos="27,18",
 			width=0.75];