add unit tests for contrib loading utils routine

test/nodes/fixtures/contrib-node/package.json

@@ -0,0 +1,20 @@
+{
+    "name": "@me/node-red-dashboard-2-two-widgets",
+    "version": "1.0.0",
+    "description": "My dashboard 2 test node package",
+    "node-red-dashboard-2": {
+        "version": "1.0.0",
+        "widgets": {
+            "ui-widget-1": {
+                "output": "ui-widget-1.js",
+                "component": "ui-widget-1"
+            },
+            "ui-widget-2": {
+                "output": "ui-widget-2.js",
+                "component": "ui-widget-2"
+            }
+        }
+    },
+    "author": "Your Name",
+    "license": "Apache-2.0"
+}

test/nodes/fixtures/contrib-nodes/package.json

@@ -0,0 +1,11 @@
+{
+    "name": "@me/my-2-widgets",
+    "version": "1.0.0",
+    "description": "My dashboard 2 test node",
+    "dependencies": {
+        "@me/node-red-dashboard-2-widget-a": "1.0.0",
+        "@me/node-red-dashboard-2-widget-b": "1.0.0"
+    },
+    "author": "Your Name",
+    "license": "Apache-2.0"
+}

test/nodes/utils.spec.js

@@ -0,0 +1,42 @@
+const should = require('should') // eslint-disable-line no-unused-vars
+
+const utils = require('../../nodes/utils/index.js')
+
+describe('utils', function () {
+    describe('getThirdPartyWidgets', function () {
+        it('should load single node package', function () {
+            // this covers loading from a nodesDir source
+            const widgets = utils.getThirdPartyWidgets('test/nodes/fixtures/contrib-node')
+            widgets.should.be.an.Object()
+            widgets.should.have.properties(['ui-widget-1', 'ui-widget-2'])
+            widgets['ui-widget-1'].should.have.properties(['component', 'name', 'package', 'path', 'src'])
+            widgets['ui-widget-1'].component.should.equal('ui-widget-1')
+            widgets['ui-widget-1'].name.should.equal('ui-widget-1')
+            widgets['ui-widget-1'].package.should.equal('@me/node-red-dashboard-2-two-widgets')
+            widgets['ui-widget-1'].src.should.equal('ui-widget-1.js')
+
+            widgets['ui-widget-2'].should.have.properties(['component', 'name', 'package', 'path', 'src'])
+            widgets['ui-widget-2'].component.should.equal('ui-widget-2')
+            widgets['ui-widget-2'].name.should.equal('ui-widget-2')
+            widgets['ui-widget-2'].package.should.equal('@me/node-red-dashboard-2-two-widgets')
+            widgets['ui-widget-2'].src.should.equal('ui-widget-2.js')
+        })
+        it('should load nodes from a package dependencies', function () {
+            // this covers loading from node-red src package and from userDir package
+            const widgets = utils.getThirdPartyWidgets('test/nodes/fixtures/contrib-nodes')
+            widgets.should.be.an.Object()
+            widgets.should.have.properties(['widget-a', 'widget-b'])
+            widgets['widget-a'].should.have.properties(['component', 'name', 'package', 'path', 'src'])
+            widgets['widget-a'].component.should.equal('ui-widget-a')
+            widgets['widget-a'].name.should.equal('widget-a')
+            widgets['widget-a'].package.should.equal('@me/node-red-dashboard-2-widget-a')
+            widgets['widget-a'].src.should.equal('ui-widget.js')
+
+            widgets['widget-b'].should.have.properties(['component', 'name', 'package', 'path', 'src'])
+            widgets['widget-b'].component.should.equal('ui-widget-b')
+            widgets['widget-b'].name.should.equal('widget-b')
+            widgets['widget-b'].package.should.equal('@me/node-red-dashboard-2-widget-b')
+            widgets['widget-b'].src.should.equal('ui-widget.js')
+        })
+    })
+})