more weird testing examples

Author: alexeyraspopov

examples/vanilla/mathmock.spec.js

@@ -1,6 +1,7 @@
 import { expect } from "@playwright/test";
 import { test } from "rollwright";
 import alias from "@rollup/plugin-alias";
+import virtual from "@rollup/plugin-virtual";
 
 test.describe("mock", () => {
 	test.use({ plugins: [alias({ entries: { "./math.js": "./math.mock.js" } })] });
@@ -29,6 +30,44 @@ test.describe("mock", () => {
 	});
 });
 
+test.describe("virtual mock", () => {
+	test.use({
+		plugins: [
+			virtual({
+				inlinemock: `
+					import { stub } from "sinon";
+					export let sum = await (${async () => {
+						let { stub } = await import("sinon");
+						return stub().returns(10);
+					}})();
+					export let multiply = stub();
+				`,
+			}),
+			alias({ entries: { "./math.js": "inlinemock" } }),
+		],
+	});
+
+	test("sum 1", async ({ execute }) => {
+		let mock = await execute(async () => {
+			let { sum } = await import("inlinemock");
+			return sum;
+		});
+
+		let res = await execute(async (from) => {
+			let element = document.createElement("div");
+			document.body.append(element);
+
+			let { sum } = await import("./math.js");
+			element.append(document.createTextNode(String(sum(from, 2))));
+			return element;
+		}, 1);
+
+		expect(await res.asElement().innerText()).toContain(String(10));
+		expect(await mock.evaluate((v) => v.callCount)).toEqual(1);
+		expect(await mock.evaluate((v) => v.calledWith(1, 2))).toEqual(true);
+	});
+});
+
 test.describe("real", () => {
 	test("sum 1", async ({ execute }) => {
 		let res = await execute(async (from) => {

examples/vanilla/package.json

@@ -8,6 +8,7 @@
   "dependencies": {
     "@playwright/test": "^1.42.1",
     "@rollup/plugin-alias": "^5.1.0",
+    "@rollup/plugin-virtual": "^3.0.2",
     "rollup-plugin-worker-url": "file:../../packages/rollup-plugin-worker-url",
     "rollwright": "file:../../packages/rollwright",
     "sinon": "^17.0.1"