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How to use on_web_socket method in Playwright Python

Best Python code snippet using playwright-python

test_websocket.py

Source:test_websocket.py

...45    assert ws.is_closed()46async def test_should_emit_frame_events(page, ws_server):47    sent = []48    received = []49    def on_web_socket(ws):50        ws.on("framesent", lambda payload: sent.append(payload))51        ws.on("framereceived", lambda payload: received.append(payload))52    page.on("websocket", on_web_socket)53    async with page.expect_event("websocket") as ws_info:54        await page.evaluate(55            """port => {56            const ws = new WebSocket('ws://localhost:' + port + '/ws');57            ws.addEventListener('open', () => {58                ws.send('echo-text');59            });60        }""",61            ws_server.PORT,62        )63    ws = await ws_info.value64    if not ws.is_closed():65        await ws.wait_for_event("close")66    assert sent == ["echo-text"]67    assert received == ["incoming", "text"]68async def test_should_emit_binary_frame_events(page, ws_server):69    sent = []70    received = []71    def on_web_socket(ws):72        ws.on("framesent", lambda payload: sent.append(payload))73        ws.on("framereceived", lambda payload: received.append(payload))74    page.on("websocket", on_web_socket)75    async with page.expect_event("websocket") as ws_info:76        await page.evaluate(77            """port => {78            const ws = new WebSocket('ws://localhost:' + port + '/ws');79            ws.addEventListener('open', () => {80                const binary = new Uint8Array(5);81                for (let i = 0; i < 5; ++i)82                    binary[i] = i;83                ws.send(binary);84                ws.send('echo-bin');85            });...

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