Add test method using mocha

.github/PULL_REQUEST_TEMPLATE.md

@@ -10,3 +10,11 @@ _Put an `x` in the boxes that apply_
 
 Describe the nature of this change. What problem does it address?
 
+## Checklist
+_Put an `x` in the boxes that apply_
+
+- [ ] I have read the [contribution guidelines](https://github.com/node-red/node-red/blob/master/CONTRIBUTING.md)
+- [ ] For non-bugfix PRs, I have discussed this change on the mailing list/slack team.
+- [ ] I have run `grunt` to verify the unit tests pass
+- [ ] I have added suitable unit tests to cover the new/changed functionality
+

.gitignore

@@ -4,3 +4,9 @@ node-red-node-*
 
 # Dependency directory
 node_modules
+
+# Coverage result
+coverage
+
+# npm install log
+npm-debug.log.*

.travis.yml

@@ -0,0 +1,21 @@
+sudo: false
+language: node_js
+env:
+  - CXX="g++-4.8"
+addons:
+  apt:
+    sources:
+    - ubuntu-toolchain-r-test
+    packages:
+    - g++-4.8
+    - gcc-4.8
+node_js:
+  - "8"
+  - "7"
+  - "6"
+  - "4"
+script:
+  - istanbul cover ./node_modules/.bin/grunt --report lcovonly && istanbul report text && ( cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js || true ) && rm -rf coverage
+before_script:
+  - npm install -g istanbul
+  - npm install coveralls

Gruntfile.js

@@ -0,0 +1,25 @@
+module.exports = function (grunt) {
+    grunt.initConfig({
+        simplemocha: {
+            options: {
+                timeout: 3000
+            },
+            all: {
+                src: [ 'test/**/*_spec.js' ]
+            }
+        },
+        mocha_istanbul: {
+            options: {
+                timeout: 3000
+            },
+            coverage: {
+                src: [ 'test/**/*_spec.js' ]
+            }
+        }
+    });
+    grunt.loadNpmTasks('grunt-simple-mocha');
+    grunt.loadNpmTasks('grunt-mocha-istanbul');
+    grunt.registerTask('default', ['simplemocha']);
+    grunt.registerTask('coverage', 'Run Istanbul code test coverage task', ['mocha_istanbul']);
+};
+

package.json

@@ -52,6 +52,13 @@
         "minimist": "1.2.0",
         "colors": "1.1.2"
     },
+    "devDependencies": {
+        "grunt": "1.0.1",
+        "grunt-simple-mocha": "0.4.1",
+        "grunt-mocha-istanbul": "5.0.2",
+        "should": "13.1.3",
+        "del": "3.0.0"
+    },
     "bin": {
         "node-red-nodegen": "./bin/node-red-nodegen.js"
     }