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David Lechner b9dbaaa5cb fileStorage: implement file locks

This breaks down reading and writing into low-level and high level sagas.

Opening now takes a lock on the file so that it can only have one writer
or have multiple readers. The low-level read and write sagas use the
file descriptor to determine if the file is still open before actually
performing the action.

Since we are using the web locks api, these locks should work across
browser tabs/windows.

The high-level read/write sagas perform the low-level open, read/write,
close operations in a single call.

The high-level delete and rename sagas are also updated to take locks
on the files while performing the respective operations and will fail
if the file is already being used somewhere else.

2022-04-04 15:24:08 -05:00

env.js

Update to create-react-app 4

2020-11-20 21:08:53 -06:00

index.tsx

fileStorage: implement file locks

2022-04-04 15:24:08 -05:00

README.md

refactor common test helpers into test/

2020-06-10 21:59:34 -05:00

README.md

Testing

NOTE: This directory contains test helpers. Actual tests are in the src/ directory.

Running tests

yarn test

Launches the test runner in the interactive watch mode.

See the section about running tests for more information.

Code coverage

yarn coverage

Launches the test runner in the code coverage mode. Results are displayed in the terminal.

yarn coverage:html
xdg-open coverage/index.html

Does the same thing except results are converted to more detailed html pages in the coverage/ directory. (On macOS, use open and on Windows use explorer instead of xdg-open to open the html in your default web browser.)

Writing tests

Tests are written using the Jest testing framework.