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Merge remote-tracking branch 'origin/master' into danieljgeiger-mathjax

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Daniel J. Geiger 2022-12-31 16:00:26 -06:00
commit 13d69d8cef
4 changed files with 64 additions and 13 deletions
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39
src/tests/scroll.test.tsx
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@ -53,23 +53,50 @@ describe("appState", () => {
});
restoreOriginalGetBoundingClientRect();
});
it("zoomed canvas scrolls on page keys", async () => {
it("moving by page up/down/left/right", async () => {
mockBoundingClientRect();
await render(<ExcalidrawApp />, {});
const scrollTest = () => {
const scrollY = h.state.scrollY;
const pageStep = h.state.height / h.state.zoom.value;
const initialScrollY = h.state.scrollY;
const initialScrollX = h.state.scrollX;
const pageStepY = h.state.height / h.state.zoom.value;
const pageStepX = h.state.width / h.state.zoom.value;
// Assert the following assertions have meaning
expect(pageStep).toBeGreaterThan(0);
expect(pageStepY).toBeGreaterThan(0);
expect(pageStepX).toBeGreaterThan(0);
// Assert we scroll up
Keyboard.keyPress(KEYS.PAGE_UP);
expect(h.state.scrollY).toBe(scrollY + pageStep);
expect(h.state.scrollY).toBe(initialScrollY + pageStepY);
// x-axis unchanged
expect(h.state.scrollX).toBe(initialScrollX);
// Assert we scroll down
Keyboard.keyPress(KEYS.PAGE_DOWN);
Keyboard.keyPress(KEYS.PAGE_DOWN);
expect(h.state.scrollY).toBe(scrollY - pageStep);
expect(h.state.scrollY).toBe(initialScrollY - pageStepY);
// x-axis unchanged
expect(h.state.scrollX).toBe(initialScrollX);
// Assert we scroll left
Keyboard.withModifierKeys({ shift: true }, () => {
Keyboard.keyPress(KEYS.PAGE_UP);
});
expect(h.state.scrollX).toBe(initialScrollX + pageStepX);
// y-axis unchanged
expect(h.state.scrollY).toBe(initialScrollY - pageStepY);
// Assert we scroll right
Keyboard.withModifierKeys({ shift: true }, () => {
Keyboard.keyPress(KEYS.PAGE_DOWN);
Keyboard.keyPress(KEYS.PAGE_DOWN);
});
expect(h.state.scrollX).toBe(initialScrollX - pageStepX);
// y-axis unchanged
expect(h.state.scrollY).toBe(initialScrollY - pageStepY);
};
const zoom = h.state.zoom.value;
// Assert we scroll properly when zoomed in
h.setState({ zoom: { value: (zoom * 1.1) as typeof zoom } });