diff --git a/README.md b/README.md
index 524afb4..d651391 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,12 @@ This will add the helper module to your `package.json` file:
 ...
 ```
 
+## Using a local Node-RED install for tests
+
+If you already have Node-RED installed for development, you can create a symbolic link to your local installation.  For example, if Node-RED is cloned in your `~/projects` folder use:
+
+    npm install ~/projects/node-red --no-save
+
 ## Adding test script to `package.json`
 
 To run your tests you can add a test script to your `package.json` file in the `scripts` section.  To run all of the files with the `_spec.js` prefix in the test directory for example:
diff --git a/index.js b/index.js
index d4df09f..9f23231 100644
--- a/index.js
+++ b/index.js
@@ -31,6 +31,7 @@ var comms;
 var log;
 var context;
 var events;
+var credentials;
 
 var runtimePath;
 var package = readPkgUp.sync();
@@ -60,6 +61,8 @@ function initRuntime(requirePath) {
         var prefix = requirePath.substring(0, requirePath.indexOf('/red.js'));
         context = require(prefix+"/runtime/nodes/context");
         comms = require(prefix+"/api/editor/comms");
+        credentials = require(prefix+"/runtime/nodes/credentials");
+
     } catch (err) {
         // ignore, assume init will be called again by a test script supplying the runtime path
     }
@@ -150,6 +153,8 @@ module.exports = {
         return redNodes.getNode(id);
     },
 
+    credentials: credentials,
+
     clearFlows: function() {
         return redNodes.stopFlows();
     },
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..13556d6
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,944 @@
+{
+  "name": "node-red-node-test-helper",
+  "version": "0.1.7",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
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+      "requires": {
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+        "negotiator": "0.6.1"
+      }
+    },
+    "array-flatten": {
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+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
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+    },
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+        "iconv-lite": "0.4.19",
+        "on-finished": "2.3.0",
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+}
diff --git a/package.json b/package.json
index ef2baa0..47a9f2b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-red-node-test-helper",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "description": "A test framework for Node-RED nodes",
   "main": "index.js",
   "scripts": {
diff --git a/test/_spec.js b/test/_spec.js
index 5647b4c..c2b6d89 100644
--- a/test/_spec.js
+++ b/test/_spec.js
@@ -1,5 +1,11 @@
+var should = require("should");
 var helper = require('../index.js');
 
 describe('_spec.js', function() {
   console.log('todo');
+
+  it('should have credentials', function(done) {
+    helper.should.have.property('credentials');
+    done();
+  });
 });
\ No newline at end of file