87 lines
2.7 KiB
TypeScript
87 lines
2.7 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { type EnumeratedWindow, pickWindowBelow } from './window-below'
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const win = (pid: number, x = 0, y = 0, width = 800, height = 600, app = `app-${pid}`): EnumeratedWindow => ({
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app,
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bounds: { x, y, width, height },
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id: pid * 10,
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pid,
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title: `${app} window`
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})
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const SELF_PID = 42
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const SELF_BOUNDS = { x: 100, y: 100, width: 800, height: 600 }
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describe('pickWindowBelow', () => {
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it('picks the first overlapping window behind ours in z-order', () => {
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const chrome = win(1, 120, 120)
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const spotify = win(2, 130, 130)
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const { below, frontmost } = pickWindowBelow([win(SELF_PID, 100, 100), chrome, spotify], SELF_PID, SELF_BOUNDS)
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expect(below).toBe(chrome)
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expect(frontmost).toBe(chrome)
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})
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it('skips windows behind ours that do not overlap', () => {
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const elsewhere = win(1, 5000, 5000)
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const covered = win(2, 200, 200)
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const { below } = pickWindowBelow([win(SELF_PID, 100, 100), elsewhere, covered], SELF_PID, SELF_BOUNDS)
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expect(below).toBe(covered)
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})
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it('skips our own other windows (same pid) while walking down', () => {
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const secondHermesWindow = win(SELF_PID, 150, 150)
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const target = win(7, 160, 160)
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const { below } = pickWindowBelow([win(SELF_PID, 100, 100), secondHermesWindow, target], SELF_PID, SELF_BOUNDS)
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expect(below).toBe(target)
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})
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it('reports frontmost even when nothing overlaps', () => {
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const elsewhere = win(1, 5000, 5000)
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const { below, frontmost } = pickWindowBelow([win(SELF_PID, 100, 100), elsewhere], SELF_PID, SELF_BOUNDS)
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expect(below).toBeNull()
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expect(frontmost).toBe(elsewhere)
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})
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it('windows in front of ours are never "below", even overlapping', () => {
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const inFront = win(3, 110, 110)
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const behind = win(4, 120, 120)
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const { below, frontmost } = pickWindowBelow([inFront, win(SELF_PID, 100, 100), behind], SELF_PID, SELF_BOUNDS)
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expect(below).toBe(behind)
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expect(frontmost).toBe(inFront)
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})
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it('falls back to overlap-only when our own window is not in the list', () => {
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// macOS omits windows the enumerator cannot see; still answer usefully.
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const chrome = win(1, 120, 120)
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const { below } = pickWindowBelow([chrome], SELF_PID, SELF_BOUNDS)
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expect(below).toBe(chrome)
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})
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it('returns nulls for an empty enumeration', () => {
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const { below, frontmost } = pickWindowBelow([], SELF_PID, SELF_BOUNDS)
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expect(below).toBeNull()
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expect(frontmost).toBeNull()
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})
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it('edge-adjacent bounds do not count as overlap', () => {
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const adjacent = win(1, 900, 100) // starts exactly at our right edge
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const { below } = pickWindowBelow([win(SELF_PID, 100, 100), adjacent], SELF_PID, SELF_BOUNDS)
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expect(below).toBeNull()
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})
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})
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