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| 1 | +// @vitest-environment happy-dom |
| 2 | + |
| 3 | +import React, { act } from "react"; |
| 4 | +import { createRoot } from "react-dom/client"; |
| 5 | +import { afterEach, describe, expect, it, vi } from "vitest"; |
| 6 | +import { TIMELINE_ASSET_MIME, TIMELINE_BLOCK_MIME } from "../../utils/timelineAssetDrop"; |
| 7 | +import { usePlayerStore } from "../store/playerStore"; |
| 8 | +import { createTimelineRowGeometry } from "./timelineLayout"; |
| 9 | +import { useTimelineAssetDrop } from "./timelineDragDrop"; |
| 10 | +import { configureTimelineTestViewport } from "./timelineTestViewport"; |
| 11 | + |
| 12 | +(globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true; |
| 13 | + |
| 14 | +interface DropTransfer { |
| 15 | + types: string[]; |
| 16 | + files: File[]; |
| 17 | + dropEffect: DataTransfer["dropEffect"]; |
| 18 | + getData: (type: string) => string; |
| 19 | +} |
| 20 | + |
| 21 | +function dragEvent(transfer: DropTransfer, clientX: number, clientY: number): React.DragEvent { |
| 22 | + return { |
| 23 | + clientX, |
| 24 | + clientY, |
| 25 | + dataTransfer: transfer, |
| 26 | + preventDefault: vi.fn(), |
| 27 | + } as unknown as React.DragEvent; |
| 28 | +} |
| 29 | + |
| 30 | +function assetTransfer(payload: string): DropTransfer { |
| 31 | + return { |
| 32 | + types: [TIMELINE_ASSET_MIME], |
| 33 | + files: [], |
| 34 | + dropEffect: "none", |
| 35 | + getData: (type) => (type === TIMELINE_ASSET_MIME ? payload : ""), |
| 36 | + }; |
| 37 | +} |
| 38 | + |
| 39 | +function renderHarness( |
| 40 | + onAssetDrop: ReturnType<typeof vi.fn>, |
| 41 | + sessionEpoch = 1, |
| 42 | + options: { onBlockDrop?: ReturnType<typeof vi.fn>; strict?: boolean } = {}, |
| 43 | +) { |
| 44 | + const tracks = Array.from({ length: 100 }, (_, index) => index); |
| 45 | + const geometry = createTimelineRowGeometry( |
| 46 | + tracks, |
| 47 | + tracks.map(() => 48), |
| 48 | + ); |
| 49 | + const scroll = document.createElement("div"); |
| 50 | + configureTimelineTestViewport(scroll, geometry.canvasHeight); |
| 51 | + document.body.append(scroll); |
| 52 | + const root = createRoot(document.createElement("div")); |
| 53 | + let api: ReturnType<typeof useTimelineAssetDrop> | null = null; |
| 54 | + |
| 55 | + function Probe({ epoch }: { epoch: number }) { |
| 56 | + api = useTimelineAssetDrop({ |
| 57 | + scrollRef: { current: scroll }, |
| 58 | + ppsRef: { current: 40 }, |
| 59 | + durationRef: { current: 120 }, |
| 60 | + trackOrderRef: { current: tracks }, |
| 61 | + rowGeometryRef: { current: geometry }, |
| 62 | + contentOrigin: 0, |
| 63 | + sessionEpoch: epoch, |
| 64 | + onAssetDrop, |
| 65 | + onBlockDrop: options.onBlockDrop, |
| 66 | + }); |
| 67 | + return null; |
| 68 | + } |
| 69 | + |
| 70 | + const renderProbe = (epoch: number) => |
| 71 | + root.render( |
| 72 | + options.strict ? ( |
| 73 | + <React.StrictMode> |
| 74 | + <Probe epoch={epoch} /> |
| 75 | + </React.StrictMode> |
| 76 | + ) : ( |
| 77 | + <Probe epoch={epoch} /> |
| 78 | + ), |
| 79 | + ); |
| 80 | + act(() => renderProbe(sessionEpoch)); |
| 81 | + return { |
| 82 | + scroll, |
| 83 | + root, |
| 84 | + get api() { |
| 85 | + if (!api) throw new Error("drop harness did not render"); |
| 86 | + return api; |
| 87 | + }, |
| 88 | + rerender(epoch: number) { |
| 89 | + act(() => renderProbe(epoch)); |
| 90 | + }, |
| 91 | + }; |
| 92 | +} |
| 93 | + |
| 94 | +afterEach(() => { |
| 95 | + vi.restoreAllMocks(); |
| 96 | + usePlayerStore.getState().reset(); |
| 97 | + document.body.innerHTML = ""; |
| 98 | +}); |
| 99 | + |
| 100 | +describe("useTimelineAssetDrop", () => { |
| 101 | + it("edge-autoscrolls the sole timeline viewport while a supported asset is held", () => { |
| 102 | + let frame: FrameRequestCallback | null = null; |
| 103 | + vi.spyOn(globalThis, "requestAnimationFrame").mockImplementation((callback) => { |
| 104 | + frame = callback; |
| 105 | + return 1; |
| 106 | + }); |
| 107 | + vi.spyOn(globalThis, "cancelAnimationFrame").mockImplementation(() => undefined); |
| 108 | + const view = renderHarness(vi.fn()); |
| 109 | + |
| 110 | + act(() => view.api.handleAssetDragOver(dragEvent(assetTransfer("{}"), 790, 120))); |
| 111 | + expect(view.api.isDragOver).toBe(true); |
| 112 | + expect(frame).not.toBeNull(); |
| 113 | + act(() => frame?.(0)); |
| 114 | + expect(view.scroll.scrollLeft).toBeGreaterThan(0); |
| 115 | + expect(view.scroll.scrollTop).toBe(0); |
| 116 | + |
| 117 | + act(() => view.api.clearDropPreview()); |
| 118 | + expect(view.api.isDragOver).toBe(false); |
| 119 | + act(() => view.root.unmount()); |
| 120 | + }); |
| 121 | + |
| 122 | + it("keeps the drop actor while moving between descendants", () => { |
| 123 | + const view = renderHarness(vi.fn()); |
| 124 | + const parent = document.createElement("div"); |
| 125 | + const child = document.createElement("div"); |
| 126 | + parent.append(child); |
| 127 | + act(() => view.api.handleAssetDragOver(dragEvent(assetTransfer("{}"), 400, 100))); |
| 128 | + act(() => |
| 129 | + view.api.handleAssetDragLeave({ |
| 130 | + relatedTarget: child, |
| 131 | + currentTarget: parent, |
| 132 | + } as unknown as React.DragEvent), |
| 133 | + ); |
| 134 | + expect(view.api.isDragOver).toBe(true); |
| 135 | + act(() => view.root.unmount()); |
| 136 | + }); |
| 137 | + |
| 138 | + it("drops once on a model row outside the mounted window and appends below the last row", () => { |
| 139 | + const onAssetDrop = vi.fn(); |
| 140 | + const view = renderHarness(onAssetDrop); |
| 141 | + usePlayerStore.getState().setCurrentTime(12.5); |
| 142 | + view.scroll.scrollTop = view.scroll.scrollHeight - view.scroll.clientHeight; |
| 143 | + const transfer = assetTransfer(JSON.stringify({ path: "/media/hero.mp4" })); |
| 144 | + |
| 145 | + act(() => { |
| 146 | + view.api.handleAssetDragOver(dragEvent(transfer, 400, 239)); |
| 147 | + view.api.handleAssetDrop(dragEvent(transfer, 400, 239)); |
| 148 | + }); |
| 149 | + |
| 150 | + expect(onAssetDrop).toHaveBeenCalledTimes(1); |
| 151 | + expect(onAssetDrop).toHaveBeenCalledWith("/media/hero.mp4", { start: 12.5, track: 100 }); |
| 152 | + expect(view.api.isDragOver).toBe(false); |
| 153 | + act(() => view.root.unmount()); |
| 154 | + }); |
| 155 | + |
| 156 | + it("ignores malformed payloads and clears the actor on project reset", () => { |
| 157 | + const onAssetDrop = vi.fn(); |
| 158 | + const view = renderHarness(onAssetDrop, 1); |
| 159 | + const transfer = assetTransfer("not-json"); |
| 160 | + |
| 161 | + act(() => view.api.handleAssetDragOver(dragEvent(transfer, 400, 100))); |
| 162 | + expect(view.api.isDragOver).toBe(true); |
| 163 | + view.rerender(2); |
| 164 | + expect(view.api.isDragOver).toBe(false); |
| 165 | + |
| 166 | + act(() => view.api.handleAssetDrop(dragEvent(transfer, 400, 100))); |
| 167 | + expect(onAssetDrop).not.toHaveBeenCalled(); |
| 168 | + act(() => view.root.unmount()); |
| 169 | + }); |
| 170 | + |
| 171 | + it("falls through a malformed asset payload to a valid block payload", () => { |
| 172 | + const onAssetDrop = vi.fn(); |
| 173 | + const onBlockDrop = vi.fn(); |
| 174 | + const view = renderHarness(onAssetDrop, 1, { onBlockDrop }); |
| 175 | + const transfer: DropTransfer = { |
| 176 | + types: [TIMELINE_ASSET_MIME, TIMELINE_BLOCK_MIME], |
| 177 | + files: [], |
| 178 | + dropEffect: "none", |
| 179 | + getData: (type) => |
| 180 | + type === TIMELINE_ASSET_MIME |
| 181 | + ? "not-json" |
| 182 | + : type === TIMELINE_BLOCK_MIME |
| 183 | + ? JSON.stringify({ name: "title-card" }) |
| 184 | + : "", |
| 185 | + }; |
| 186 | + |
| 187 | + act(() => { |
| 188 | + view.api.handleAssetDragOver(dragEvent(transfer, 400, 100)); |
| 189 | + view.api.handleAssetDrop(dragEvent(transfer, 400, 100)); |
| 190 | + }); |
| 191 | + |
| 192 | + expect(onAssetDrop).not.toHaveBeenCalled(); |
| 193 | + expect(onBlockDrop).toHaveBeenCalledExactlyOnceWith("title-card", { start: 0, track: 0 }); |
| 194 | + act(() => view.root.unmount()); |
| 195 | + }); |
| 196 | + |
| 197 | + it("clears an escaped drag after StrictMode effect replay", () => { |
| 198 | + const view = renderHarness(vi.fn(), 1, { strict: true }); |
| 199 | + act(() => view.api.handleAssetDragOver(dragEvent(assetTransfer("{}"), 400, 100))); |
| 200 | + expect(view.api.isDragOver).toBe(true); |
| 201 | + |
| 202 | + act(() => window.dispatchEvent(new Event("dragend"))); |
| 203 | + expect(view.api.isDragOver).toBe(false); |
| 204 | + act(() => view.root.unmount()); |
| 205 | + }); |
| 206 | +}); |
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