60 lines
1.4 KiB
TypeScript
60 lines
1.4 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import { shouldAnchorHeaderBeforeCollapse } from "./git-diff-scroll";
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describe("shouldAnchorHeaderBeforeCollapse", () => {
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it("skips anchor when header is fully visible in viewport", () => {
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expect(
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shouldAnchorHeaderBeforeCollapse({
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headerOffset: 120,
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headerHeight: 44,
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viewportOffset: 80,
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viewportHeight: 400,
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}),
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).toBe(false);
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});
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it("skips anchor when header is partially visible in viewport", () => {
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expect(
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shouldAnchorHeaderBeforeCollapse({
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headerOffset: 60,
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headerHeight: 44,
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viewportOffset: 80,
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viewportHeight: 300,
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}),
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).toBe(false);
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});
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it("anchors when header is above viewport", () => {
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expect(
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shouldAnchorHeaderBeforeCollapse({
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headerOffset: 200,
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headerHeight: 44,
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viewportOffset: 500,
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viewportHeight: 300,
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}),
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).toBe(true);
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});
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it("anchors when header is below viewport", () => {
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expect(
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shouldAnchorHeaderBeforeCollapse({
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headerOffset: 600,
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headerHeight: 44,
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viewportOffset: 100,
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viewportHeight: 300,
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}),
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).toBe(true);
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});
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it("anchors when viewport metrics are unavailable", () => {
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expect(
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shouldAnchorHeaderBeforeCollapse({
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headerOffset: 0,
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headerHeight: 44,
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viewportOffset: 0,
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viewportHeight: 0,
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}),
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).toBe(true);
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});
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});
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