test: add test case for remove-optimized-module

Author: jerrykingxyz

tests/e2e/cases/incremental/remove-optimized-module/comp/Button.js

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+export const Button = "Button";

tests/e2e/cases/incremental/remove-optimized-module/comp/index.js

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+export { Button } from "./Button";

tests/e2e/cases/incremental/remove-optimized-module/index.js

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+import { Button } from "./comp";
+
+const div = document.createElement("div");
+div.id = "main";
+div.innerText = Button;
+document.body.appendChild(div);

tests/e2e/cases/incremental/remove-optimized-module/index.test.ts

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+import { test, expect } from "@/fixtures";
+
+test("remove optimized module should not panic", async ({
+	page,
+	fileAction
+}) => {
+	await expect(page.locator("#main")).toHaveText("Button");
+
+	fileAction.deleteFile("comp/Button.js");
+
+	const overlay = page.frameLocator("#webpack-dev-server-client-overlay");
+	await expect(
+		overlay.getByText("ESModulesLinkingWarning: export 'Button'")
+	).toBeVisible();
+	await expect(
+		overlay.getByText("Module not found: Can't resolve './Button'")
+	).toBeVisible();
+
+	fileAction.updateFile(
+		"comp/Button.js",
+		() => "export const Button = 'NewButton';"
+	);
+	await expect(page.locator("#main")).toHaveText("NewButton");
+});

tests/e2e/cases/incremental/remove-optimized-module/package.json

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+{
+  "name": "test",
+  "sideEffects": false
+}

tests/e2e/cases/incremental/remove-optimized-module/rspack.config.js

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+const { rspack } = require("@rspack/core");
+
+/** @type {import("@rspack/core").Configuration} */
+module.exports = {
+	entry: "./index.js",
+	cache: true,
+	experiments: {
+		cache: true
+	},
+	plugins: [new rspack.HtmlRspackPlugin()]
+};