Add a test

jaehwan-moon · jaehwan-moon · commit 9c0036ba50c7 · 2018-05-15T07:19:53.000-04:00
diff --git a/test/ProgressPlugin.test.js b/test/ProgressPlugin.test.js
@@ -0,0 +1,40 @@
+"use strict";
+
+const path = require("path");
+const MemoryFs = require("memory-fs");
+const webpack = require("../");
+
+const createMultiCompiler = () => {
+	const compiler = webpack([
+		{
+			context: path.join(__dirname, "fixtures"),
+			entry: "./a.js"
+		},
+		{
+			context: path.join(__dirname, "fixtures"),
+			entry: "./b.js"
+		}
+	]);
+	compiler.outputFileSystem = new MemoryFs();
+	return compiler;
+};
+
+describe("ProgressPlugin", function() {
+	it("should not contain NaN as a percentage when it is applied to MultiCompiler", function(done) {
+		const compiler = createMultiCompiler();
+
+		let percentage = 0;
+		new webpack.ProgressPlugin((p, msg, ...args) => {
+			percentage += p;
+		}).apply(compiler);
+
+		compiler.run(err => {
+			if (err) {
+				throw err;
+			} else {
+				expect(percentage).not.toBe(NaN);
+				done();
+			}
+		});
+	});
+});
