Fixed #4, write tests

Author: Ivan Demidov

test/expected/output-config-file.html

@@ -0,0 +1 @@
+<span class="mycomponent"><span class="mytitle">Super Title</span><span class="mytext">Awesome Text</span></span>

test/expected/output-config-pkg.html

@@ -0,0 +1 @@
+<div class="mycomponent"><div class="mytitle">Super Title</div><div class="mytext">Awesome Text</div></div>

test/fixtures/config.json

@@ -0,0 +1,6 @@
+{
+	"require": ["posthtml-custom-elements"],
+	"posthtml-custom-elements": {
+		"defaultTag": "span"
+	}
+}

test/fixtures/input.html

@@ -0,0 +1 @@
+<myComponent><myTitle>Super Title</myTitle><myText>Awesome Text</myText></myComponent>

test/test-cli.js

@@ -1,6 +1,60 @@
-var test = require('ava');
-var execa = require('execa');
+const test = require('ava');
+const execa = require('execa');
+const tempWrite = require('temp-write');
+const pathExists = require('path-exists');
+const path = require('path');
+const readPkg = require('read-pkg');
+const readFile = require('fs').readFile;
 
-test('Missing required arguments', t => {
-	t.throws(execa('../cli.js'));
+test('Missing required arguments -i, -o', t => {
+	t.throws(execa('../cli.js', []));
+});
+
+test('Missing required arguments -o', t => {
+	t.throws(execa('../cli.js', ['-i', 'fixtures/input.html']));
+});
+
+test('Missing required arguments -i', t => {
+	const filename = tempWrite.sync('output.html');
+	t.throws(execa('../cli.js', [`-o ${filename}`]));
+});
+
+test('Check version', async t => {
+	t.is((await execa('../cli.js', ['-v'])).stdout, (await readPkg(path.dirname(__dirname))).version);
+});
+
+test('Transform html witch config in package.json', async t => {
+	t.plan(2);
+	function read(path) {
+		return new Promise((resolve, reject) => {
+			readFile(path, 'utf8', (err, data) => {
+				if (err) {
+					reject(err);
+				}
+				return resolve(data);
+			});
+		});
+	}
+	const filename = await tempWrite('output.html');
+	await execa('../cli.js', ['-i', 'fixtures/input.html', '-o', filename]);
+	t.true(await pathExists(filename));
+	t.is((await read('expected/output-config-pkg.html')), (await read(filename)));
+});
+
+test('Transform html witch config in file', async t => {
+	t.plan(2);
+	function read(path) {
+		return new Promise((resolve, reject) => {
+			readFile(path, 'utf8', (err, data) => {
+				if (err) {
+					reject(err);
+				}
+				return resolve(data);
+			});
+		});
+	}
+	const filename = await tempWrite('output.html');
+	await execa('../cli.js', ['-i', 'fixtures/input.html', '-o', filename, '-c', 'fixtures/config.json']);
+	t.true(await pathExists(filename));
+	t.is((await read('expected/output-config-file.html')), (await read(filename)));
 });