| import { describe, expect, it } from "vitest"; |
|
|
| import { |
| firstImageFromClipboard, |
| imageFilesFromTransfer, |
| transferMayContainImage, |
| } from "./chatImagePaste"; |
|
|
| |
| |
| function makeItem(kind: string, type: string, file: File | null) { |
| return { kind, type, getAsFile: () => file } as unknown as DataTransferItem; |
| } |
|
|
| function makeData(opts: { |
| items?: DataTransferItem[]; |
| files?: File[]; |
| }): DataTransfer { |
| const items = opts.items ?? []; |
| const files = opts.files ?? []; |
| const itemList: Record<string | number, unknown> = { length: items.length }; |
| items.forEach((it, i) => { |
| itemList[i] = it; |
| }); |
| const fileList: Record<string | number, unknown> = { length: files.length }; |
| files.forEach((f, i) => { |
| fileList[i] = f; |
| }); |
| return { |
| items: itemList, |
| files: fileList, |
| } as unknown as DataTransfer; |
| } |
|
|
| const png = new File([new Uint8Array([1, 2, 3])], "x.png", { |
| type: "image/png", |
| }); |
| const gif = new File([new Uint8Array([4, 5])], "y.gif", { |
| type: "image/gif", |
| }); |
|
|
| describe("firstImageFromClipboard", () => { |
| it("returns null for null clipboard data", () => { |
| expect(firstImageFromClipboard(null)).toBeNull(); |
| }); |
|
|
| it("finds an image via items[].getAsFile()", () => { |
| const data = makeData({ items: [makeItem("file", "image/png", png)] }); |
| expect(firstImageFromClipboard(data)).toBe(png); |
| }); |
|
|
| it("ignores non-file and non-image items", () => { |
| const data = makeData({ |
| items: [ |
| makeItem("string", "text/plain", null), |
| makeItem("file", "application/pdf", new File([], "a.pdf")), |
| ], |
| }); |
| expect(firstImageFromClipboard(data)).toBeNull(); |
| }); |
|
|
| it("falls back to files[] when items are absent (Safari/Firefox)", () => { |
| const data = makeData({ files: [png] }); |
| expect(firstImageFromClipboard(data)).toBe(png); |
| }); |
|
|
| it("returns null when nothing image-like is present", () => { |
| const data = makeData({ |
| files: [new File([], "notes.txt", { type: "text/plain" })], |
| }); |
| expect(firstImageFromClipboard(data)).toBeNull(); |
| }); |
| }); |
|
|
| describe("imageFilesFromTransfer", () => { |
| it("dedupes the same file when present in both items and files", () => { |
| const data = makeData({ |
| items: [makeItem("file", "image/png", png)], |
| files: [png, gif], |
| }); |
| expect(imageFilesFromTransfer(data)).toEqual([png, gif]); |
| }); |
| }); |
|
|
| describe("transferMayContainImage", () => { |
| it("is true for image items even when type is empty (some browsers)", () => { |
| const data = makeData({ |
| items: [makeItem("file", "", png)], |
| }); |
| expect(transferMayContainImage(data)).toBe(true); |
| }); |
|
|
| it("is false for text-only transfers", () => { |
| const data = makeData({ |
| items: [makeItem("string", "text/plain", null)], |
| }); |
| expect(transferMayContainImage(data)).toBe(false); |
| }); |
| }); |
|
|
