#2 Initial TODO List

- create vue extend proxy to inject required template

src/util/vueExtendProxy.js

@@ -0,0 +1,11 @@
+const DEFAULT_TEMPLATE = '<div></div>'
+
+export default function vueExtendProxy ({extendFn, vueOptionSpec}) {
+  return function proxiedExtend (options) {
+    if (vueOptionSpec.isTemplateRequired(options)) {
+      options.template = DEFAULT_TEMPLATE
+    }
+
+    return extendFn.apply(this, arguments)
+  }
+}

test/unit/specs/util/vueExtendProxy.spec.js

@@ -0,0 +1,63 @@
+import vueExtendProxy from 'src/util/vueExtendProxy'
+
+describe('vueExtendProxy', () => {
+  let Vue
+  let proxiedExtend
+  let options
+  let vueOptionSpec
+  const sandbox = sinon.sandbox.create()
+
+  beforeEach(() => {
+    Vue = {
+      extend: sandbox.stub()
+    }
+
+    vueOptionSpec = {
+      isTemplateRequired: sandbox.stub()
+    }
+
+    options = {
+      mark: 'test',
+      data: [1, 2, 3]
+    }
+
+    proxiedExtend = vueExtendProxy({
+      extendFn: Vue.extend,
+      vueOptionSpec: vueOptionSpec
+    })
+  })
+
+  afterEach(() => {
+    sandbox.restore()
+  })
+
+  it('should check for template', () => {
+    options = Object.assign({}, options)
+
+    proxiedExtend(options)
+
+    expect(vueOptionSpec.isTemplateRequired).to.have.been.calledWith(options)
+  })
+
+  it('should add template to options if template required', () => {
+    vueOptionSpec.isTemplateRequired.returns(true)
+
+    proxiedExtend(options)
+
+    expect(options.template).to.equal('<div></div>')
+  })
+
+  it('should`t add template to options if template isn`t required', () => {
+    vueOptionSpec.isTemplateRequired.returns(false)
+
+    proxiedExtend(options)
+
+    expect(options.template).to.be.undefined
+  })
+
+  it('should call original extend', () => {
+    proxiedExtend(options)
+
+    expect(Vue.extend).to.have.been.calledWith(options)
+  })
+})