dry + only replace updated files

test/js/update.ts

@@ -1,16 +1,9 @@
-import { readFileSync, writeFileSync } from 'fs';
-import { glob } from '../tiny-glob';
+import {replaceIfUpdated } from "../tiny-glob";
+
 // this file will replace all the expected.js files with their _actual
 // equivalents. Only use it when you're sure that you haven't
 // broken anything!
 
-const svelte = (function loadSvelte(test) {
-	process.env.TEST = test ? 'true' : '';
-	const resolved = require.resolve('../../compiler.js');
-	delete require.cache[resolved];
-	return require(resolved);
-})(false);
-
 function loadConfig(file) {
 	try {
 		const resolved = require.resolve(file);
@@ -19,23 +12,19 @@ function loadConfig(file) {
 		const config = require(resolved);
 		return config.default || config;
 	} catch (err) {
-		if (err.code === 'MODULE_NOT_FOUND') {
+		if (err.code === "MODULE_NOT_FOUND") {
 			return {};
 		}
 
 		throw err;
 	}
 }
-
-glob('samples/*/input.svelte', { cwd: __dirname })
-	.forEach((file) => {
-		writeFileSync(
-			`${__dirname}/${file.replace('input.svelte', 'expected.js')}`,
-			svelte
-				.compile(
-					readFileSync(`${__dirname}/${file}`, 'utf-8').replace(/\s+$/, '').replace(/\r/g, ''),
-					loadConfig(`${__dirname}/${file.replace('input.svelte', '_config.js')}`).options
+replaceIfUpdated((compile, check, get_relative) => {
+	check(
+		"expected.js",
+		compile(loadConfig(get_relative("_config.js")).options).js.code.replace(
+			/generated by Svelte v\d+\.\d+\.\d+(-\w+\.\d+)?/,
+			"generated by Svelte vX.Y.Z"
 		)
-				.js.code.replace(/generated by Svelte v\d+\.\d+\.\d+(-\w+\.\d+)?/, 'generated by Svelte vX.Y.Z').replace(/\r/g, '')
 	);
-	});
+}, __dirname);

test/parser/update.ts

@@ -1,32 +1,19 @@
-import { readFileSync, writeFileSync } from 'fs';
-import { glob } from '../tiny-glob';
+import { replaceIfUpdated } from "../tiny-glob";
 
 // this file will replace all the expected.js files with their _actual
 // equivalents. Only use it when you're sure that you haven't
 // broken anything!
-const svelte = (function loadSvelte(test) {
-	process.env.TEST = test ? 'true' : '';
-	const resolved = require.resolve('../../compiler.js');
-	delete require.cache[resolved];
-	return require(resolved);
-})(false);
 
-glob('samples/*/input.svelte', { cwd: __dirname })
-	.forEach((file) => {
+replaceIfUpdated((compile, check) => {
 	try {
-			writeFileSync(
-				`${__dirname}/${file.replace('input.svelte', 'output.json')}`,
-				JSON.stringify(
-					svelte.compile(readFileSync(`${__dirname}/${file}`, 'utf-8').replace(/\s+$/, '').replace(/\r/g, ''), { generate: false }).ast,
-					null,
-					'\t'
-				)
-			);
+		check("output.json", compile({ generate: false }).ast);
 	} catch (e) {
-			if (e.name !== 'ParseError') throw e;
-			writeFileSync(
-				`${__dirname}/${file.replace('input.svelte', 'error.json')}`,
-				JSON.stringify({ code:e.code, message: e.message, pos:e.pos, start:e.start }, null, '\t')
-			);
-		}
+		if (e.name !== "ParseError") throw e;
+		check("error.json", {
+			code: e.code,
+			message: e.message,
+			start: e.start,
+			pos: e.pos,
 		});
+	}
+}, __dirname);

test/tiny-glob.ts

@@ -1,6 +1,6 @@
-import { readdirSync, lstatSync, statSync } from 'fs';
+import { readdirSync, lstatSync, statSync, readFileSync, writeFileSync } from 'fs';
 import { normalize, dirname, join, resolve, relative } from 'path';
-
+import assert from "assert";
 // MIT
 // tiny-glob, globrex and globalyzer by Terkel Gjervig
 
@@ -272,3 +272,43 @@ export function glob(str: string, { cwd = '.', absolute = false, filesOnly = fal
 	walk(matches, glob.base, path, filesOnly, dot, cwd, '.', 0);
 	return absolute ? matches.map((x) => resolve(cwd, x)) : matches;
 }
+export function replaceIfUpdated(config_getter, cwd) {
+	const svelte = (function loadSvelte() {
+		const resolved = require.resolve("../compiler.js");
+		delete require.cache[resolved];
+		return require(resolved);
+	})();
+	glob("samples/*/input.svelte", { cwd }).forEach((dir) => {
+		function compile(options){
+			return svelte.compile(
+				readFileSync(`${cwd}/${dir}`, "utf-8").replace(/\s+$/, "").replace(/\r/g, ""),
+				options
+			)
+		}
+		function check_news(file, value){
+			const path = `${cwd}/${dir.replace("input.svelte", file)}`;
+			try {
+				const previous = readFileSync(path, "utf-8");
+				if (typeof value === "object") {
+					assert.deepEqual(
+						JSON.parse(previous),
+						JSON.parse(JSON.stringify(value))
+					);
+				} else {
+					assert.equal(
+						previous.replace(/\s+$/, "").replace(/\r/g, ""),
+						(value = value.replace(/\s+$/, "").replace(/\r/g, ""))
+					);
+				}
+			} catch (e) {
+				if (typeof value === "object") value = JSON.stringify(value, null, "\t");
+				writeFileSync(path, value);
+			}
+		}
+		function get_relative(name){
+			return `${cwd}/${dir.replace("input.svelte", name)}`
+		}
+
+		config_getter(compile, check_news, get_relative );
+	});
+}