render clears non-mithril dom nodes

render/tests/test-render.js

@@ -0,0 +1,24 @@
+"use strict"
+
+var o = require("../../ospec/ospec")
+var domMock = require("../../test-utils/domMock")
+var vdom = require("../../render/render")
+
+o.spec("render", function() {
+	var $window, root, render
+	o.beforeEach(function() {
+		$window = domMock()
+		root = $window.document.createElement("div")
+		render = vdom($window).render
+	})
+
+	o("overwrites existing content", function() {
+		var vnodes = [{tag: "a", text: null}]
+
+		root.appendChild($window.document.createElement("div"));
+
+		render(root, vnodes)
+
+		o(root.childNodes.length).equals(1)
+	})
+})