Improve processing when default is an alias

and fix test cases

red/runtime/nodes/context/index.js

@@ -37,7 +37,7 @@ function init(_settings) {
 function load() {
     // load & init plugins in settings.contextStorage
     var plugins = settings.contextStorage;
-    var alias = null;
+    var isAlias = false;
     if (plugins) {
         noContextStorage = false;
         for(var pluginName in plugins){
@@ -45,7 +45,7 @@ function load() {
                 continue;
             }
             if(pluginName === "default" && typeof plugins[pluginName] === "string"){
-                alias = plugins[pluginName];
+                isAlias = true;
                 continue;
             }
             var plugin;
@@ -67,9 +67,9 @@ function load() {
                 throw new Error(log._("context.error-module-not-defined", {storage:pluginName}));
             }
         }
-        if(alias){
-            if(externalContexts.hasOwnProperty(alias)){
-                externalContexts["default"] = externalContexts[alias];
+        if(isAlias){
+            if(externalContexts.hasOwnProperty(plugins["default"])){
+                externalContexts["default"] =  externalContexts[plugins["default"]];
             }else{
                 throw new Error(log._("context.error-invalid-default-module", {storage:plugins["default"]}));
             }

test/red/runtime/index_spec.js

@@ -79,6 +79,7 @@ describe("runtime", function() {
         var redNodesGetNodeList;
         var redNodesLoadFlows;
         var redNodesStartFlows;
+        var redNodesLoadContextsPlugin;
 
         beforeEach(function() {
             storageInit = sinon.stub(storage,"init",function(settings) {return when.resolve();});
@@ -91,6 +92,7 @@ describe("runtime", function() {
             redNodesCleanModuleList = sinon.stub(redNodes,"cleanModuleList",function(){});
             redNodesLoadFlows = sinon.stub(redNodes,"loadFlows",function() {return when.resolve()});
             redNodesStartFlows = sinon.stub(redNodes,"startFlows",function() {});
+            redNodesLoadContextsPlugin = sinon.stub(redNodes,"loadContextsPlugin",function() {});
         });
         afterEach(function() {
             storageInit.restore();
@@ -104,6 +106,7 @@ describe("runtime", function() {
             redNodesCleanModuleList.restore();
             redNodesLoadFlows.restore();
             redNodesStartFlows.restore();
+            redNodesLoadContextsPlugin.restore();
         });
         it("reports errored/missing modules",function(done) {
             redNodesGetNodeList = sinon.stub(redNodes,"getNodeList", function(cb) {

test/red/runtime/nodes/context/index_spec.js

@@ -123,7 +123,7 @@ describe('context', function() {
             should.not.exist(context.get("foo"));
         });
 
-        it.skip('enumerates context keys', function() {
+        it('enumerates context keys', function() {
             var context = Context.get("1","flowA");
 
             var keys = context.keys();
@@ -168,6 +168,7 @@ describe('context', function() {
             stubGet.reset();
             stubSet.reset();
             stubKeys.reset();
+            stubDelete.reset();
             Context.clean({allNodes:{}});
             fs.remove(testDir,done);
         });
@@ -418,7 +419,7 @@ describe('context', function() {
             var result = parseKey(input);
             result.storage.should.eql(expectedModule);
             result.key.should.eql(expectedKey);
-        };
+        }
 
         it('should return module and key', function() {
             returnModuleAndKey("$test.aaa","test","aaa");

test/red/runtime/util_spec.js

@@ -153,11 +153,9 @@ describe("red/util", function() {
             var v = util.getMessageProperty({a:"foo"},"msg.b");
             should.not.exist(v);
         });
-        it('should throw error if property parent does not exist', function() {
-            /*jshint immed: false */
-            (function() {
-                util.getMessageProperty({a:"foo"},"msg.a.b.c");
-            }).should.throw();
+        it('should return undefined if property parent does not exist', function() {
+            var v = util.getMessageProperty({a:"foo"},"msg.a.b.c");
+            should.not.exist(v);
         });
         it('retrieves a property with array syntax', function() {
             var v = util.getMessageProperty({a:["foo","bar"]},"msg.a[0]");