adding unit tests

Author: chrisdothtml

package.json

@@ -18,12 +18,15 @@
     "dustjs-linkedin": "^2.6.0"
   },
   "devDependencies": {
+    "chai": "^3.5.0",
     "dustjs-linkedin": "^2.6.0",
+    "mocha": "^3.2.0",
     "rollup": "^0.41.6",
     "rollup-watch": "^3.2.2"
   },
   "scripts": {
     "build": "rollup -c",
-    "build-w": "rollup -c -w"
+    "build-w": "rollup -c -w",
+    "test": "rollup -c && mocha test/index.js"
   }
 }

test/cases/partials/child.dust

@@ -0,0 +1 @@
+<h1>{text}</h1>

test/cases/partials/index.dust

@@ -0,0 +1,4 @@
+<div>
+  {>"./child.dust" text="Heading" /}
+  <p>Body</p>
+</div>

test/cases/partials/index.js

@@ -0,0 +1,7 @@
+import template from './index.dust'
+import { render } from '../utils.js'
+
+export default {
+  expected: '<div><h1>Heading</h1><p>Body</p></div>',
+  actual: render(template)
+}

test/cases/simple/index.dust

@@ -0,0 +1 @@
+<span>{name}</span>

test/cases/simple/index.js

@@ -0,0 +1,9 @@
+import template from './index.dust'
+import { render } from '../utils.js'
+
+export default {
+  expected: '<span>Chris</span>',
+  actual: render(template, {
+    name: 'Chris'
+  })
+}

test/cases/utils.js

@@ -0,0 +1,18 @@
+import { render as dustRender } from 'dustjs-linkedin'
+
+/**
+ * Synchronous dust render
+ */
+export function render (template, data = {}) {
+  let result
+
+  dustRender(template, data, (error, output) => {
+    if (error) {
+      throw error
+    } else {
+      result = output
+    }
+  })
+
+  return result
+}

test/cases/whitespace/index.dust

@@ -0,0 +1,3 @@
+<span>one</span>
+
+<span>two</span>

test/cases/whitespace/index.js

@@ -0,0 +1,7 @@
+import template from './index.dust'
+import { render } from '../utils.js'
+
+export default {
+  expected: '<span>one</span>\n\n<span>two</span>\n',
+  actual: render(template)
+}

test/index.js

@@ -0,0 +1,55 @@
+const dustjs = require('../build/index.js')
+const { expect } = require('chai')
+const { rollup } = require('rollup')
+const { join } = require('path')
+
+/**
+ * Runs provided source code as a node module
+ */
+function runAsModule (source) {
+  const run = new Function('module', 'exports', 'require', source)
+  const module = {
+    exports: {}
+  }
+
+  run(module, module.exports, require)
+  return module.exports
+}
+
+function runTestCase (name, options = {}) {
+  const config = {
+    compile: {
+      entry: join(__dirname, `cases/${name}/index.js`),
+      external: ['dustjs-linkedin'],
+      plugins: [dustjs(options)]
+    },
+    generate: {
+      format: 'cjs',
+    }
+  }
+
+  return rollup(config.compile)
+    .then(function (bundle) {
+      const { code } = bundle.generate(config.generate)
+      const { actual, expected } = runAsModule(code)
+
+      expect(actual).to.equal(expected)
+    })
+}
+
+describe('dustjs plugin', () => {
+  it(
+    'should compile templates when imported',
+    () => runTestCase('simple')
+  )
+
+  it(
+    'should dynamically import partials',
+    () => runTestCase('partials')
+  )
+
+  it(
+    'should preserve whitespace when the option is passed',
+    () => runTestCase('whitespace', { whitespace: true })
+  )
+})