Update tests and styleguide for path resolving feature.

index.js

@@ -37,7 +37,9 @@ module.exports = function plugin(options) {
 						return prev instanceof Error ? curr : prev;
 					});
 
-					return result instanceof Error ? reject(result) : resolve(result);
+					return result instanceof Error ?
+						reject(new Error('ENOENT: posthtml-modules module lookups failed. Was looking for a module here:\n' + lookups.join('\n'))) :
+						resolve(result);
 				});
 			}).then(function (content) {
 				return posthtml([function (tree) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "posthtml-modules",
-  "version": "0.1.1",
+  "version": "0.2.0",
   "description": "Posthtml modules processing",
   "main": "index.js",
   "scripts": {

test/index.spec.js

@@ -12,7 +12,15 @@ test('Must include html', async t => {
 
 test('Must fail when module\'s href cannot be found', async t => {
 	const actual = `<div><module href="./undefined.html"></module></div>`;
-	t.throws(posthtml().use(plugin()).process(actual));
+	const lookups = [
+		path.resolve(__dirname, './/undefined.html'),
+		path.resolve(__dirname, './undefined/index.html')
+	];
+
+	t.throws(
+		posthtml().use(plugin()).process(actual),
+		'ENOENT: posthtml-modules module lookups failed. Was looking for a module here:\n' + lookups.join('\n')
+	);
 });
 
 test('Must replace <content/> with module\'s content', async t => {
@@ -23,7 +31,8 @@ test('Must replace <content/> with module\'s content', async t => {
 });
 
 test('Must resolve href\'s correctly', async t => {
-	const actual = '<div class="container"><module href="./header"></module></div>'
+	const actual = '<div class="container"><module href="./header"></module></div>';
+	const expected = '<div class="container"><header class="header"><nav class="nav"><button class="button"></button></nav></header></div>';
 	const {html} = await posthtml().use(plugin({context: path.resolve(__dirname, 'tree.spec')})).process(actual);
-	console.log(html);
+	t.is(html.replace(/(\n|\t)/g, ''), expected);
 });