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test(editor): cover clip speed edge cases

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wiiiii123
2026-05-24 21:33:58 +07:00
parent fbc6ec9ecd
commit b52bdedf83
1 changed files with 75 additions and 0 deletions
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src/components/video-editor/clipSpeedChange.test.ts
+75
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@@ -10,12 +10,39 @@ describe("formatClipSpeedLabel", () => {
it("returns labels only for non-default positive speeds", () => {
expect(formatClipSpeedLabel(1)).toBeNull();
expect(formatClipSpeedLabel(0)).toBeNull();
expect(formatClipSpeedLabel(-1)).toBeNull();
expect(formatClipSpeedLabel(Number.POSITIVE_INFINITY)).toBeNull();
expect(formatClipSpeedLabel(Number.NaN)).toBeNull();
expect(formatClipSpeedLabel(0.5)).toBe("0.5x");
expect(formatClipSpeedLabel(2)).toBe("2x");
});
});
describe("planClipSpeedChange", () => {
it("returns null for missing clips and invalid speeds", () => {
const clipRegions = [{ id: "clip-1", startMs: 0, endMs: 5_000, speed: 1 }];
expect(
planClipSpeedChange({
clipRegions,
zoomRegions: [],
selectedClipId: "missing",
speed: 0.5,
}),
).toBeNull();
for (const speed of [0, -1, Number.NaN, Number.POSITIVE_INFINITY]) {
expect(
planClipSpeedChange({
clipRegions,
zoomRegions: [],
selectedClipId: "clip-1",
speed,
}),
).toBeNull();
}
});
it("extends an isolated clip when slowing it down", () => {
const result = planClipSpeedChange({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 5_000, speed: 1 }],
@@ -30,6 +57,34 @@ describe("planClipSpeedChange", () => {
});
});
it("shortens an isolated clip when speeding it up", () => {
const result = planClipSpeedChange({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 6_000, speed: 1 }],
zoomRegions: [],
selectedClipId: "clip-1",
speed: 2,
});
expect(result).toEqual({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 3_000, speed: 2 }],
zoomRegions: [],
});
});
it("treats invalid stored clip speed as 1x", () => {
const result = planClipSpeedChange({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 4_000, speed: Number.NaN }],
zoomRegions: [],
selectedClipId: "clip-1",
speed: 0.5,
});
expect(result).toEqual({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 8_000, speed: 0.5 }],
zoomRegions: [],
});
});
it("blocks slow speed changes that would overlap the next clip", () => {
const result = planClipSpeedChange({
clipRegions: [
@@ -62,6 +117,26 @@ describe("planClipSpeedChange", () => {
});
});
it("does not scale zoom regions that start outside the changed clip", () => {
const result = planClipSpeedChange({
clipRegions: [{ id: "clip-1", startMs: 2_000, endMs: 6_000, speed: 1 }],
zoomRegions: [
{ id: "zoom-before", startMs: 1_000, endMs: 1_500, depth: 2, focus: { cx: 0.5, cy: 0.5 } },
{ id: "zoom-after", startMs: 6_000, endMs: 6_500, depth: 2, focus: { cx: 0.5, cy: 0.5 } },
],
selectedClipId: "clip-1",
speed: 0.5,
});
expect(result).toEqual({
clipRegions: [{ id: "clip-1", startMs: 2_000, endMs: 10_000, speed: 0.5 }],
zoomRegions: [
{ id: "zoom-before", startMs: 1_000, endMs: 1_500, depth: 2, focus: { cx: 0.5, cy: 0.5 } },
{ id: "zoom-after", startMs: 6_000, endMs: 6_500, depth: 2, focus: { cx: 0.5, cy: 0.5 } },
],
});
});
it("blocks speed changes that would make scaled zooms overlap unchanged zooms", () => {
const result = planClipSpeedChange({
clipRegions: [{ id: "clip-1", startMs: 0, endMs: 5_000, speed: 1 }],