split test into unit and integration

provide some dummy tests cases

Author: devtonhere

test/fixtures/simple/README.md

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+# Heading
+
+[another page](other.md)
+
+## II 1
+
+### III 1
+
+#### IV 1
+
+##### V 1
+
+
+## II 2
+
+### III 2
+
+#### IV 2

test/fixtures/simple/other-page.md

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+# Other
+
+## two 1
+
+### three 1
+
+#### four 1
+
+##### five 1 
+
+
+## two 2
+
+### three 2
+
+#### four 2

test/integration/render.js

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+const path = require('path')
+
+const {expect} = require('chai')
+
+const {init, expectSameDom} = require('./_helper')
+
+describe('full docsify initialization', function() {
+	it('TODO: check generated markup', async function() {
+		const {docsify, dom} = await init('simple', {loadSidebar: true})
+  		console.log(dom.window.document.body.innerHTML)
+	})
+
+})

test/integration/router.js

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+const path = require('path')
+
+const {expect} = require('chai')
+
+const {init, expectSameDom} = require('./_helper')
+
+describe('router', function() {
+	it('TODO: trigger to load another page', async function() {
+		const {docsify} = await init()
+  		window.location = '/?foo=bar'
+	})
+
+})