File size: 3,267 Bytes
3201ca6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { processFiles, processImages } from "#/utils/file-processing";
const reads = vi.hoisted(() => ({
arrayBuffers: [] as string[],
dataUrls: [] as string[],
}));
class ControlledFileReader {
onload: (() => void) | null = null;
onerror: (() => void) | null = null;
onabort: (() => void) | null = null;
private finish(file: File) {
queueMicrotask(() => {
if (file.name.startsWith("error")) {
this.onerror?.();
} else if (file.name.startsWith("abort")) {
this.onabort?.();
} else {
this.onload?.();
}
});
}
readAsArrayBuffer(file: File) {
reads.arrayBuffers.push(file.name);
this.finish(file);
}
readAsDataURL(file: File) {
reads.dataUrls.push(file.name);
this.finish(file);
}
}
function file(name: string, type = "text/plain") {
return new File(["content"], name, { type });
}
describe("file processing", () => {
beforeEach(() => {
reads.arrayBuffers = [];
reads.dataUrls = [];
vi.stubGlobal("FileReader", ControlledFileReader);
});
afterEach(() => {
vi.unstubAllGlobals();
});
it("returns successful files in input order while retaining read failures", async () => {
const first = file("first.txt");
const failed = file("error-report.txt");
const last = file("last.txt");
const result = await processFiles([first, failed, last]);
expect(reads.arrayBuffers).toEqual([
"first.txt",
"error-report.txt",
"last.txt",
]);
expect(result.successful).toEqual([first, last]);
expect(result.failed).toEqual([
{
file: failed,
error: new Error("Failed to read file: error-report.txt"),
},
]);
});
it("reports aborted regular-file reads", async () => {
const aborted = file("abort-upload.txt");
await expect(processFiles([aborted])).resolves.toEqual({
successful: [],
failed: [
{
file: aborted,
error: new Error("File reading was aborted: abort-upload.txt"),
},
],
});
});
it("reads images as data URLs and isolates errors and aborts", async () => {
const successful = file("photo.png", "image/png");
const failed = file("error-photo.png", "image/png");
const aborted = file("abort-photo.png", "image/png");
const result = await processImages([successful, failed, aborted]);
expect(reads.dataUrls).toEqual([
"photo.png",
"error-photo.png",
"abort-photo.png",
]);
expect(result.successful).toEqual([successful]);
expect(result.failed).toEqual([
{
file: failed,
error: new Error("Failed to read image: error-photo.png"),
},
{
file: aborted,
error: new Error("Image reading was aborted: abort-photo.png"),
},
]);
});
it("handles empty file and image batches without creating readers", async () => {
await expect(processFiles([])).resolves.toEqual({
successful: [],
failed: [],
});
await expect(processImages([])).resolves.toEqual({
successful: [],
failed: [],
});
expect(reads.arrayBuffers).toEqual([]);
expect(reads.dataUrls).toEqual([]);
});
});
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