Adding tests for openapi2postman executable

.gitignore

@@ -5,3 +5,4 @@ node_modules/*
 .coverage/*
 npm-debug.log
 npm-debug.log.*
+tempOutput.json

test/data/invalid_openapi/multiple-components.yaml

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: 'multi-component-failure'
+  description: 'multi-component-failure'
+  version: '0.1'
+
+# Basic authentication
+components:
+  securitySchemes:
+    BasicAuth:
+      type: http
+      scheme: basic
+
+# Describe your paths here
+paths:
+  /v1:
+    get:
+      summary: Sample summary
+      description: Sample description
+      operationId: sampleOperation
+      responses:
+        default:
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+components:
+  schemas:
+    Error:
+      type: object
+      properties:
+        status:
+          type: string

test/unit/bin.test.js

@@ -0,0 +1,34 @@
+var expect = require('chai').expect,
+  fs = require('fs'),
+  exec = require('child_process').exec,
+  collection;
+
+describe('openapi2postmanv2 ', function() {
+  it('should print to console', function(done) {
+    exec('./bin/openapi2postmanv2.js -s test/data/valid_openapi/petstore.json', function(err, stdout) {
+      expect(err).to.be.null;
+      expect(stdout).to.include('Swagger Petstore');
+      done();
+    });
+  });
+
+  it('should print to file', function(done) {
+    exec('./bin/openapi2postmanv2.js -s test/data/valid_openapi/petstore.json -o tempOutput.json', function(err) {
+      expect(err).to.be.null;
+      fs.readFile('tempOutput.json', 'utf8', (err, data) => {
+        collection = JSON.parse(data);
+        expect(collection.info.name).to.equal('Swagger Petstore');
+        expect(collection.item.length).to.equal(1);
+        done();
+      });
+    });
+  });
+
+  it('should show appropriate messages for invalid input', function (done) {
+    exec('./bin/openapi2postmanv2.js -s test/data/invalid_openapi/multiple-components.yaml', function(err, stdout) {
+      expect(err).to.be.null;
+      expect(stdout).to.include('duplicated mapping key');
+      done();
+    });
+  });
+});

test/unit/plugin.test.js

@@ -4,7 +4,7 @@ var path = '../../',
   packageJson = require(path + '/package.json');
 
 /* global describe, it */
-describe(packageJson.name, function() {
+describe('Plugin ' + packageJson.name, function() {
   var sampleInput = packageJson.com_postman_plugin.sample_input;
 
   it('should contain all com_postman_plugin attributes', function (done) {