unit tests added for getMainFile

test/plugins/bundle-service/get-main-file.js

@@ -0,0 +1,74 @@
+'use strict'
+const describe = require('mocha').describe
+const it = require('mocha').it
+const expect = require('chai').expect
+
+const getMainFile = require('../../../app/plugins/bundle-service/get-main-file')
+
+describe('getMainFile', () => {
+  describe('js', () => {
+    it('should get main file from package.json', () => {
+      const mainFile = getMainFile({
+        extension: 'js',
+        packageJSON: {
+          main: 'foo.js',
+        },
+      })
+
+      expect(mainFile).to.eq('foo.js')
+    })
+
+    it('should get main file from package.json and add extension if missing', () => {
+      const mainFile = getMainFile({
+        extension: 'js',
+        packageJSON: {
+          main: 'foo',
+        },
+      })
+
+      expect(mainFile).to.eq('foo.js')
+    })
+
+    it('should get default main file when none in package.json', () => {
+      const mainFile = getMainFile({
+        extension: 'js',
+        packageJSON: {},
+      })
+
+      expect(mainFile).to.eq('index.js')
+    })
+  })
+
+  describe('css', () => {
+    it('should get main file from package.json', () => {
+      const mainFile = getMainFile({
+        extension: 'css',
+        packageJSON: {
+          style: 'foo.css',
+        },
+      })
+
+      expect(mainFile).to.eq('foo.css')
+    })
+
+    it('should get main file from package.json and add extension if missing', () => {
+      const mainFile = getMainFile({
+        extension: 'css',
+        packageJSON: {
+          style: 'foo',
+        },
+      })
+
+      expect(mainFile).to.eq('foo.css')
+    })
+
+    it('should get default main file when none in package.json', () => {
+      const mainFile = getMainFile({
+        extension: 'css',
+        packageJSON: {},
+      })
+
+      expect(mainFile).to.eq('index.css')
+    })
+  })
+})