mirror of https://github.com/webpack/webpack.git
				
				
				
			
		
			
				
	
	
		
			93 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			93 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
"use strict";
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require("should");
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const path = require("path");
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const fs = require("fs");
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const webpack = require("../");
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describe("HotModuleReplacementPlugin", function() {
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	this.timeout(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", "entry.js");
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		const statsFile1 = path.join(
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			__dirname,
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			"js",
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			"HotModuleReplacementPlugin.test.stats1.txt"
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		);
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		const statsFile2 = path.join(
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			__dirname,
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			"js",
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			"HotModuleReplacementPlugin.test.stats2.txt"
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		);
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		const recordsFile = path.join(__dirname, "js", "records.json");
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		try {
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			fs.mkdirSync(path.join(__dirname, "js"));
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		} catch (e) {} // eslint-disable-line no-empty
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		try {
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			fs.unlinkSync(recordsFile);
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		} catch (e) {} // eslint-disable-line no-empty
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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")
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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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				lastHash1.should.be.eql(
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					oldHash1,
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					"hash shouldn't change when bundle stay equal"
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				);
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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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					lastHash2.should.not.be.eql(
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						lastHash1,
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						"hash should change when bundle changes"
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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 currentHash1 = stats.toJson().hash;
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						fs.writeFileSync(statsFile2, stats.toString());
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						currentHash1.should.not.be.eql(
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							lastHash1,
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							"hash shouldn't change to the first hash if bundle changed back to first bundle"
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						);
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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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								stats.toJson().hash.should.be.eql(currentHash2);
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								currentHash2.should.not.be.eql(lastHash2);
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								currentHash1.should.not.be.eql(currentHash2);
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								lastHash1.should.not.be.eql(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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