can1357
3f4384f6b1
- Fixed file not found error handling in auto-generated marker detection to gracefully return undefined instead of propagating errors. - Made assertEditableFileContent function synchronous to simplify API and improve error handling consistency. - Updated test assertions to match synchronous function behavior using toThrow instead of rejects patterns. - Removed obsolete test case for doc comment preservation during replace operations.
57 lines
1.9 KiB
TypeScript
57 lines
1.9 KiB
TypeScript
import { afterEach, beforeEach, describe, expect, it } from "bun:test";
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import * as fs from "node:fs";
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import * as os from "node:os";
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import * as path from "node:path";
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import { peekFile, peekFileSync } from "../src/peek-file";
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function rangeBuffer(length: number): Buffer {
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return Buffer.from(Array.from({ length }, (_, index) => index % 256));
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}
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function bytesOf(input: Uint8Array): number[] {
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return Array.from(input);
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}
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describe("peekFile", () => {
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let tempDir: string;
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beforeEach(() => {
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tempDir = fs.mkdtempSync(path.join(os.tmpdir(), "pi-peek-file-"));
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});
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afterEach(() => {
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fs.rmSync(tempDir, { recursive: true, force: true });
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});
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it("reads an exact header slice asynchronously", async () => {
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const filePath = path.join(tempDir, "sample.bin");
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const content = rangeBuffer(1024);
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fs.writeFileSync(filePath, content);
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const header = await peekFile(filePath, 37, bytes => bytes.slice());
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expect(bytesOf(header)).toEqual(bytesOf(content.subarray(0, 37)));
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});
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it("reads an exact header slice synchronously", () => {
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const filePath = path.join(tempDir, "sample.bin");
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const content = rangeBuffer(2048);
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fs.writeFileSync(filePath, content);
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const header = peekFileSync(filePath, 777, bytes => bytes.slice());
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expect(bytesOf(header)).toEqual(bytesOf(content.subarray(0, 777)));
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});
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it("serves concurrent async peeks without corrupting buffers", async () => {
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const filePath = path.join(tempDir, "sample.bin");
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const content = rangeBuffer(4096);
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fs.writeFileSync(filePath, content);
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const lengths = [17, 33, 64, 128, 257, 511, 512, 513, 777, 1024, 1536, 2048];
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const headers = await Promise.all(lengths.map(length => peekFile(filePath, length, bytes => bytes.slice())));
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expect(headers).toHaveLength(lengths.length);
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for (const [index, header] of headers.entries()) {
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expect(bytesOf(header)).toEqual(bytesOf(content.subarray(0, lengths[index])));
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}
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});
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});
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