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feat: add Playwright integration for browser testing #160

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79fdee7
feat: add Playwright integration for browser testing
jlucaso1 Aug 7, 2025
c530d4a
fix: correct Playwright installation command in CI workflow
jlucaso1 Aug 7, 2025
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3 changes: 3 additions & 0 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,9 @@ jobs:
- name: Check Wasm up-to-date
run: deno task build --check

- name: Install Playwright browsers
run: deno run -A npm:playwright@1.54.2/playwright install --with-deps

- name: Test
run: deno task test

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4 changes: 3 additions & 1 deletion deno.json
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Expand Up @@ -37,8 +37,10 @@
"@std/encoding": "jsr:@std/encoding@^1.0.6",
"@std/fmt": "jsr:@std/fmt@^1.0.4",
"@std/fs": "jsr:@std/fs@^1.0.10",
"@std/http": "jsr:@std/http@^1.0.0",
"@std/path": "jsr:@std/path@^1.0.8",
"@std/streams": "jsr:@std/streams@^1.0.8",
"@std/tar": "jsr:@std/tar@^0.1.4"
"@std/tar": "jsr:@std/tar@^0.1.4",
"playwright": "npm:playwright@1.54.2"
}
}
115 changes: 101 additions & 14 deletions deno.lock
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16 changes: 16 additions & 0 deletions tests/browser.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
<!DOCTYPE html>
<html>
<head>
<title>Wasmbuild Browser Test</title>
<script type="module">
import { greet } from "../lib_inline/deno_test.js";

window.testGreet = () => {
return greet("Browser");
};
</script>
</head>
<body>
<h1>Wasmbuild Browser Test</h1>
</body>
</html>
35 changes: 35 additions & 0 deletions tests/browser_test.ts
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@@ -0,0 +1,35 @@
import { assertEquals } from "@std/assert";
import { serveDir } from "@std/http/file-server";
import { chromium } from "playwright";
import { Path } from "@david/path";

Deno.test("browser test", async () => {
const controller = new AbortController();
const serverPromise = Deno.serve({
port: 8082,
signal: controller.signal,
onListen: () => {},
}, (req) => {
return serveDir(req, {
fsRoot: new Path(import.meta.dirname!).toString(),
urlRoot: "",
quiet: true,
});
}).finished;

const browser = await chromium.launch();
const page = await browser.newPage();
await page.goto("http://localhost:8082/browser.html");

const result = await page.evaluate(() => {
// @ts-ignore global function
// deno-lint-ignore no-window
return window.testGreet();
});

assertEquals(result, "Hello, Browser! Result: 3");

await browser.close();
controller.abort();
await serverPromise;
});
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