tldraw/packages/tldraw/setupTests.js
Brian Hung 930abaf5d7
avoid pixel rounding / transformation miscalc for overlay items (#1858)
Fixes pixel rounding when calculating css transformations for overlay
items. Also fixes issue where `editor.instanceState.devicePixelRatio`
wasn't properly updating.

TLDR; `width * window.devicePixelRatio` should be integer to avoid
rounding. `--tl-dpr-multiple` is smallest integer to multiply
`window.devicePixelRatio` such that its product is an integer.

#1852 
#1836 
#1834

### Change Type

- [x] `patch` — Bug fix
- [ ] `minor` — New feature
- [ ] `major` — Breaking change
- [ ] `dependencies` — Changes to package dependencies[^1]
- [ ] `documentation` — Changes to the documentation only[^2]
- [ ] `tests` — Changes to any test code only[^2]
- [ ] `internal` — Any other changes that don't affect the published
package[^2]
- [ ] I don't know

[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version

### Test Plan

Would need to add a test checking when `window.devicePixelRatio`
changes, that `editor.instanceState.devicePixelRatio` is equal.

---------

Co-authored-by: David Sheldrick <d.j.sheldrick@gmail.com>
2023-09-08 10:47:14 +00:00

35 lines
833 B
JavaScript

require('fake-indexeddb/auto')
require('jest-canvas-mock')
global.ResizeObserver = require('resize-observer-polyfill')
global.crypto ??= new (require('@peculiar/webcrypto').Crypto)()
global.FontFace = class FontFace {
load() {
return Promise.resolve()
}
}
document.fonts = {
add: () => {},
delete: () => {},
forEach: () => {},
[Symbol.iterator]: () => [][Symbol.iterator](),
}
Object.defineProperty(window, 'matchMedia', {
writable: true,
value: jest.fn().mockImplementation((query) => ({
matches: false,
media: query,
onchange: null,
addListener: jest.fn(), // Deprecated
removeListener: jest.fn(), // Deprecated
addEventListener: jest.fn(),
removeEventListener: jest.fn(),
dispatchEvent: jest.fn(),
})),
})
Object.defineProperty(global.URL, 'createObjectURL', {
writable: true,
value: jest.fn(),
})