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docs: fix chrome extension examples (#14968)

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Kaspar Emanuel 2022-06-21 03:04:34 +01:00 committed by GitHub
parent 5e6b493bc9
commit 42e6e094ca
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1 changed files with 16 additions and 4 deletions
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20
docs/src/chrome-extensions-js-python.md
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@ -7,7 +7,7 @@ title: "Chrome Extensions"
Extensions only work in Chrome / Chromium in non-headless mode, launched with a persistent context. Extensions only work in Chrome / Chromium in non-headless mode, launched with a persistent context.
::: :::
The following is code for getting a handle to the [background page](https://developer.chrome.com/extensions/background_pages) of an extension whose source is located in `./my-extension`: The following is code for getting a handle to the [background page](https://developer.chrome.com/extensions/background_pages) of a [Manifest v2](https://developer.chrome.com/docs/extensions/mv2/) extension whose source is located in `./my-extension`:
```js ```js
const { chromium } = require('playwright'); const { chromium } = require('playwright');
@ -22,7 +22,10 @@ const { chromium } = require('playwright');
`--load-extension=${pathToExtension}` `--load-extension=${pathToExtension}`
] ]
}); });
const backgroundPage = browserContext.backgroundPages()[0]; let [backgroundPage] = browserContext.backgroundPages();
if (!backgroundPage)
backgroundPage = await browserContext.waitForEvent('backgroundpage');
// Test the background page as you would any other page. // Test the background page as you would any other page.
await browserContext.close(); await browserContext.close();
})(); })();
@ -45,7 +48,12 @@ async def run(playwright):
f"--load-extension={path_to_extension}", f"--load-extension={path_to_extension}",
], ],
) )
background_page = context.background_pages[0]
if len(context.background_pages) == 0:
background_page = await context.wait_for_event('backgroundpage')
else:
background_page = context.background_pages[0]
# Test the background page as you would any other page. # Test the background page as you would any other page.
await context.close() await context.close()
@ -74,7 +82,11 @@ def run(playwright):
f"--load-extension={path_to_extension}", f"--load-extension={path_to_extension}",
], ],
) )
background_page = context.background_pages[0] if len(context.background_pages) == 0:
background_page = context.wait_for_event('backgroundpage')
else:
background_page = context.background_pages[0]
# Test the background page as you would any other page. # Test the background page as you would any other page.
context.close() context.close()