Comments (3)
idk what would be best.
I don't see the error you do, at least when doing simple stuff in the browser console. But still, just replacing the variable doesn't work unless I use defineProperty
like you did:
But I don't know exactly what is implied by using this other way of defining a variable, might it cause some other problems? Feels like if the browser is not letting you overwrite a variable there may be a good reason...
Also just for my curiosity, why do you want this to run in the browser? You could just use the real IndexedDB then.
And as a quick workaround for anyone targeting the browser, you could import the variables explicitly from fake-indexeddb
rather than using fake-indexeddb/auto
.
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We're using it in Cypress component testing and Storybook where we don't want to modify the actual IndexedDB, have to reset it between every component, and we figured a memory variant would be (much) quicker.
We're using Dexie where we're defining a database globally; https://dexie.org/docs/Tutorial/React#3-create-a-file-dbjs-or-dbts. Passing a custom indexedDB would require some test-only hackery which we'd like to avoid, but this is a possible fallback if all else fails. Either way, this setup does make it harder to reset the database, as we can't just change the indexedDB variable half way through. Since the definition is file-level, it's also persisted between tests.
I only get the error when running the auto scripts in either Storybook en Cypress. Maybe that's because it's executed in a .mjs file? I assumed the error was because of an error in the browser, since it refers to window
and seems to run in the browser, but both Cypress and Storybook run several different kinds of processes (including node) in which code is executed so I can't say that for sure. I do know that my patch fixes it.
I get the same behavior as you when I do these tests in the console, but it also reveals that setting indexedDB like this doesn't work at all. I think using defineProperty should work correctly everywhere. It basically overwrites the property instead of using its setter to change its value (which as you saw doesn't even work in the browser at best, and crashes at worst).
My project works using the patch in the original message in combination with patch-package
, so maybe the best course of actions is waiting until other people report in with this issue to get more info?
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Related Issues (20)
- Blob support HOT 12
- Unable to cover onError scenarios while testing HOT 5
- Unable to cover openCursor onSuccess scenario while testing HOT 12
- transaction doesn't support array stores? HOT 4
- Correct way to refresh DB before each test HOT 2
- MissingAPIError: IndexedDB API missing HOT 4
- Issues with latest version of jest with the jsdom environment HOT 3
- FBDCursor broken in release/minimised build HOT 1
- FakeDOMStringList should not support array methods HOT 4
- Transactions/Cursors fail with `jsdom` HOT 7
- setTimeout problems / questions HOT 4
- 3.1.6 regression: `ReferenceError: setImmediate is not defined` HOT 1
- orderBy support HOT 4
- initialize the DB before the use. HOT 2
- Add observation for Dexie users HOT 3
- [BUG] Context loosing for `FakeDOMStringList` members while wrapping IDB
- [BUG] Invalid behavior for concurrent insertion data HOT 1
- Ref of Observable from liveQuery is not reactive HOT 7
- fake-indexeddb fails when happy-dom is loaded prior to fake-indexeddb HOT 3
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