mirror of https://github.com/webpack/webpack.git
76 lines
2.7 KiB
JavaScript
76 lines
2.7 KiB
JavaScript
"use strict";
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const path = require("path");
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const fs = require("fs");
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const mkdirp = require("mkdirp");
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const webpack = require("../");
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describe("HotModuleReplacementPlugin", () => {
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jest.setTimeout(10000);
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it("should not have circular hashes but equal if unmodified", (done) => {
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const entryFile = path.join(__dirname, "js", "HotModuleReplacementPlugin", "entry.js");
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const statsFile1 = path.join(__dirname, "js", "HotModuleReplacementPlugin", "HotModuleReplacementPlugin.test.stats1.txt");
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const statsFile2 = path.join(__dirname, "js", "HotModuleReplacementPlugin", "HotModuleReplacementPlugin.test.stats2.txt");
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const recordsFile = path.join(__dirname, "js", "HotModuleReplacementPlugin", "records.json");
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try {
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mkdirp.sync(path.join(__dirname, "js", "HotModuleReplacementPlugin"));
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} catch(e) {}
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try {
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fs.unlinkSync(recordsFile);
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} catch(e) {}
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const compiler = webpack({
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cache: false,
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entry: entryFile,
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recordsPath: recordsFile,
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output: {
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path: path.join(__dirname, "js", "HotModuleReplacementPlugin")
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},
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plugins: [
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new webpack.HotModuleReplacementPlugin(),
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new webpack.optimize.OccurrenceOrderPlugin()
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]
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});
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fs.writeFileSync(entryFile, "1", "utf-8");
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compiler.run((err, stats) => {
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if(err) throw err;
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const oldHash1 = stats.toJson().hash;
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fs.writeFileSync(statsFile1, stats.toString());
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compiler.run((err, stats) => {
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if(err) throw err;
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const lastHash1 = stats.toJson().hash;
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fs.writeFileSync(statsFile2, stats.toString());
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expect(lastHash1).toBe(oldHash1); // hash shouldn't change when bundle stay equal
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fs.writeFileSync(entryFile, "2", "utf-8");
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compiler.run((err, stats) => {
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if(err) throw err;
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const lastHash2 = stats.toJson().hash;
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fs.writeFileSync(statsFile1, stats.toString());
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expect(lastHash2).not.toBe(lastHash1); // hash should change when bundle changes
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fs.writeFileSync(entryFile, "1", "utf-8");
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compiler.run((err, stats) => {
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if(err) throw err;
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const currentHash1 = stats.toJson().hash;
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fs.writeFileSync(statsFile2, stats.toString());
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expect(currentHash1).not.toBe(lastHash1); // hash shouldn't change to the first hash if bundle changed back to first bundle
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fs.writeFileSync(entryFile, "2", "utf-8");
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compiler.run((err, stats) => {
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if(err) throw err;
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const currentHash2 = stats.toJson().hash;
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fs.writeFileSync(statsFile1, stats.toString());
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compiler.run((err, stats) => {
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if(err) throw err;
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expect(stats.toJson().hash).toBe(currentHash2);
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expect(currentHash2).not.toBe(lastHash2);
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expect(currentHash1).not.toBe(currentHash2);
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expect(lastHash1).not.toBe(lastHash2);
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done();
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});
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});
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});
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});
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});
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});
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});
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});
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