virt2/api/soft/CodeMirror/view/test/test-coords.ts

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import {tempEditor} from "./temp-editor"
import ist from "ist"
describe("EditorView coords", () => {
it("can find coordinates for simple text", () => {
let cm = tempEditor("one two\nthree"), prev = null
for (let i = 0; i < cm.state.doc.length; i++) {
let coords = cm.coordsAtPos(i)!
if (prev) ist(prev.top < coords.top - 5 || prev.left < coords.left)
prev = coords
ist(cm.posAtCoords({x: coords.left, y: coords.top}), i)
}
})
it("can find coordinates in text scrolled into view horizontally", () => {
let cm = tempEditor("l1\n" + "l2 ".repeat(400))
let rect = cm.dom.getBoundingClientRect(), line2 = cm.coordsAtPos(3)!.top + 2
cm.scrollDOM.scrollLeft = 0
let right = cm.posAtCoords({x: rect.right - 2, y: line2})
cm.scrollDOM.scrollLeft = (rect.right - rect.left) - 10
ist(cm.posAtCoords({x: rect.right - 2, y: line2}), right, ">")
})
})