import { describe, expect, it } from "vite-plus/test"; import { computeLabelPosition } from "./PickLabelPosition.ts"; const VIEWPORT = { viewportWidth: 1280, viewportHeight: 800 }; describe("computeLabelPosition", () => {  it("anchors to the element's top-left when there's room above and to the right", () => {    const { x, y } = computeLabelPosition({      ...VIEWPORT,      targetLeft: 200,      targetTop: 200,      targetBottom: 240,      labelWidth: 120,      labelHeight: 18,    });    expect(x).toBe(200);    // 200 (top) - 18 (height) - 4 (gap)    expect(y).toBe(200 - 18 - 4);  });   it("clamps left edge so the label stays inside the viewport", () => {    const { x } = computeLabelPosition({      ...VIEWPORT,      targetLeft: -50,      targetTop: 200,      targetBottom: 240,      labelWidth: 120,      labelHeight: 18,    });    expect(x).toBe(4);  });   it("clamps right edge when the label would overflow the viewport (the bug we shipped)", () => {    const { x } = computeLabelPosition({      ...VIEWPORT,      targetLeft: 1240,      targetTop: 200,      targetBottom: 240,      labelWidth: 200,      labelHeight: 18,    });    // viewportWidth (1280) - labelWidth (200) - margin (4) = 1076    expect(x).toBe(1076);  });   it("flips the label below the element when there's no room above", () => {    const { y } = computeLabelPosition({      ...VIEWPORT,      targetLeft: 200,      targetTop: 4,      targetBottom: 44,      labelWidth: 120,      labelHeight: 18,    });    // labelY = 4 - 18 - 4 = -18 → flip → 44 + 4 = 48    expect(y).toBe(48);  });   it("pins to the bottom margin when the element fills the viewport (no room above OR below)", () => {    const { y } = computeLabelPosition({      ...VIEWPORT,      targetLeft: 200,      targetTop: 0,      targetBottom: 800,      labelWidth: 120,      labelHeight: 18,    });    // Above overflows top → flip below = 800 + 4 = 804 → also overflows    // bottom → pin to viewportHeight - labelHeight - margin = 778.    expect(y).toBe(800 - 18 - 4);  });   it("never returns a negative coordinate", () => {    const { x, y } = computeLabelPosition({      ...VIEWPORT,      targetLeft: -1000,      targetTop: -1000,      targetBottom: -900,      labelWidth: 5000,      labelHeight: 5000,    });    expect(x).toBeGreaterThanOrEqual(0);    expect(y).toBeGreaterThanOrEqual(0);  });});