Best Python code snippet using playwright-python
test_browsercontext.py
Source:test_browsercontext.py  
...286    assert binding_source[0]["context"] == context287    assert binding_source[0]["page"] == page288    assert binding_source[0]["frame"] == page.main_frame289    assert result == 11290async def test_expose_function_should_work(context):291    await context.expose_function("add", lambda a, b: a + b)292    page = await context.new_page()293    await page.expose_function("mul", lambda a, b: a * b)294    await context.expose_function("sub", lambda a, b: a - b)295    result = await page.evaluate(296        """async function() {297      return { mul: await mul(9, 4), add: await add(9, 4), sub: await sub(9, 4) }298    }"""299    )300    assert result == {"mul": 36, "add": 13, "sub": 5}301async def test_expose_function_should_throw_for_duplicate_registrations(302    context, server303):304    await context.expose_function("foo", lambda: None)...LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.
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