import * as path from 'node:path';
import assert from 'node:assert/strict';
import { describe, it } from 'node:test';
import { readFile } from '../../../lib/fs-helpers.js';
import { withFileOpsFixture } from '../fixtures/file-ops-hooks.js';
void describe('readFile', () => {
withFileOpsFixture((getTestDir) => {
void it('readFile reads file contents', async () => {
const result = await readFile(path.join(getTestDir(), 'README.md'));
assert.ok(result.content.includes('# Test Project'));
});
void it('readFile reads first N lines with head parameter', async () => {
const result = await readFile(path.join(getTestDir(), 'multiline.txt'), {
head: 5,
});
assert.ok(result.content.includes('Line 1'));
assert.ok(result.content.includes('Line 5'));
assert.strictEqual(result.truncated, true);
assert.strictEqual(result.readMode, 'head');
});
void it('readFile rejects non-files', async () => {
await assert.rejects(readFile(getTestDir()), /Not a file/);
});
});
});
