githubmirror/webpack

test/BannerPlugin.test.js
130 строк3 KB
Alexander Akait
test: fail tests on unexpected deprecations (#21245)
23 июн 2026, 01:28
23 июн 2026, 01:28743256f
"use strict";

const path = require("path");
const fs = require("graceful-fs");

const webpack = require("..");
const expectNoDeprecations = require("./helpers/expectNoDeprecations");

const pluginDir = path.join(__dirname, "js", "BannerPlugin");
const outputDir = path.join(pluginDir, "output");

expectNoDeprecations();

describe("BannerPlugin", () => {
	it("should cache assets", (done) => {
		const entry1File = path.join(pluginDir, "entry1.js");
		const entry2File = path.join(pluginDir, "entry2.js");
		const outputFile = path.join(outputDir, "entry1.js");
		try {
			fs.mkdirSync(path.join(pluginDir), {
				recursive: true
			});
		} catch (_err) {
			// empty
		}
		const compiler = webpack({
			mode: "development",
			entry: {
				entry1: entry1File,
				entry2: entry2File
			},
			output: {
				path: outputDir
			},
			plugins: [new webpack.BannerPlugin("banner is a string")]
		});
		fs.writeFileSync(entry1File, "1", "utf8");
		fs.writeFileSync(entry2File, "1", "utf8");
		compiler.run((err) => {
			if (err) return done(err);
			const footerFileResults = fs.readFileSync(outputFile, "utf8").split("\n");
			expect(footerFileResults[0]).toBe("/*! banner is a string */");
			fs.writeFileSync(entry2File, "2", "utf8");
			compiler.run((err, stats) => {
				const { assets } = /** @type {import("../").Stats} */ (stats).toJson();
				const assetsList = /** @type {import("../").StatsAsset[]} */ (assets);
				expect(
					/** @type {import("../").StatsAsset} */ (
						assetsList.find((as) => as.name === "entry1.js")
					).emitted
				).toBe(false);
				expect(
					/** @type {import("../").StatsAsset} */ (
						assetsList.find((as) => as.name === "entry2.js")
					).emitted
				).toBe(true);
				done(err);
			});
		});
	});

	it("can place banner as footer", (done) => {
		const footerFile = path.join(pluginDir, "footerFile.js");
		const outputFile = path.join(outputDir, "footerFile.js");
		try {
			fs.mkdirSync(path.join(pluginDir), {
				recursive: true
			});
		} catch (_err) {
			// empty
		}
		const compiler = webpack({
			mode: "development",
			entry: {
				footerFile
			},
			output: {
				path: outputDir
			},
			plugins: [
				new webpack.BannerPlugin({
					banner: "banner is a string",
					footer: true
				})
			]
		});
		fs.writeFileSync(footerFile, "footer", "utf8");
		compiler.run((err) => {
			if (err) return done(err);
			const footerFileResults = fs.readFileSync(outputFile, "utf8").split("\n");
			expect(footerFileResults.pop()).toBe("/*! banner is a string */");
			done();
		});
	});

	it("should allow to change stage", (done) => {
		const entryFile = path.join(pluginDir, "entry3.js");
		const outputFile = path.join(outputDir, "entry3.js");
		try {
			fs.mkdirSync(path.join(pluginDir), {
				recursive: true
			});
		} catch (_err) {
			// empty
		}
		const compiler = webpack({
			mode: "production",
			entry: {
				entry3: entryFile
			},
			output: {
				path: outputDir
			},
			plugins: [
				new webpack.BannerPlugin({
					raw: true,
					banner: "/* banner is a string */",
					stage: webpack.Compilation.PROCESS_ASSETS_STAGE_REPORT
				})
			]
		});
		fs.writeFileSync(entryFile, "console.log(1 + 1);", "utf8");
		compiler.run((err) => {
			if (err) return done(err);
			const fileResult = fs.readFileSync(outputFile, "utf8").split("\n");
			expect(fileResult[0]).toBe("/* banner is a string */");
			done();
		});
	});
});