Add ui-test command

Author: lauriro

.github/workflows/test.yml

@@ -10,11 +10,7 @@ jobs:
     - run: npm audit --audit-level=low
     - run: npx c8 -r lcovonly -r text npm test
     - run: npx lj lint
-    - name: Browser tests
-      run: |
-        npx lj serve &
-        google-chrome --headless --virtual-time-budget=5000 --enable-logging=stderr http://127.0.0.1:8080/test/index.html 2>&1 | tee /tmp/browser-test.txt
-        grep -q "# pass" /tmp/browser-test.txt && ! grep -q "FAIL" /tmp/browser-test.txt
+    - run: npx lj ui-test test/index.html
     - uses: coverallsapp/github-action@v2
       name: Upload to coveralls.io
       with:

cli.js

@@ -67,6 +67,11 @@ var fs = require("fs")
 		script: true,
 		out: "_site/",
 	},
+	"ui-test": {
+		port: 8091,
+		budget: 5000,
+		_: ["test/index.html"]
+	},
 	test_t: {
 		status: true,
 		tz: "",

lib/serve.js

@@ -34,7 +34,7 @@ module.exports = function(opts) {
 		zip: "application/zip"
 	}
 
-	http.createServer(function(req, res) {
+	return http.createServer(function(req, res) {
 		console.log(new Date(), req.method, req.url)
 		if (req.method === "GET") {
 			sendFile(res, req.url)

lib/ui-test.js

@@ -0,0 +1,64 @@
+//-
+//-  Usage
+//-    lj ui-test [URL_PATH]
+//-
+//-  Options
+//-    --port          Server port (default: 8091)
+//-    --budget        Virtual time budget in ms (default: 5000)
+
+var { command } = require("..")
+, consoleRe = /^[\s\S]*INFO:CONSOLE[^"]*"([\s\S]*)/
+
+module.exports = function(opts) {
+	var output = ""
+	, buf = ""
+	, urlPath = opts._[0] || "test/index.html"
+	, browser = ["google-chrome-stable", "google-chrome", "chromium-browser", "chromium"].find(command)
+	, retries = 10
+	opts._ = []
+
+	if (!browser) {
+		console.error("No browser found")
+		process.exitCode = 1
+		return
+	}
+
+	var server = require("./serve")(opts)
+	.on("error", function(e) {
+		if (e.code === "EADDRINUSE" && retries--) return server.listen(++opts.port, "127.0.0.1")
+		console.error(e.message)
+		process.exitCode = 1
+	})
+	.on("listening", function() {
+		var url = "http://127.0.0.1:" + opts.port + "/" + urlPath
+		, proc = require("child_process").spawn(browser, [
+			"--headless",
+			"--virtual-time-budget=" + opts.budget,
+			"--enable-logging=stderr",
+			"--no-sandbox",
+			url
+		], { stdio: ["ignore", "ignore", "pipe"] })
+
+		proc.stderr.on("data", function(chunk) {
+			buf += chunk
+			var lines = buf.split(/", source: .*\n/m)
+			buf = lines.pop()
+			lines.forEach(parseLine)
+		})
+
+		proc.on("close", function() {
+			parseLine(buf)
+			server.close()
+			process.exitCode = /\u2714/.test(output) && !/FAIL|\u2718/.test(output) ? 0 : 1
+		})
+	})
+
+	function parseLine(line) {
+		var match = consoleRe.exec(line)
+		if (match) {
+			console.log(match[1])
+			output += match[1]
+		}
+	}
+}
+