0e100610e5
readSelection(path) -> discriminated union of: - ok (the parsed v1 payload) - missing (file does not exist) - stale (updated_at older than FRESHNESS_MS = 60s) - invalid (bad JSON or unknown version) Lives outside src/tui/ because the MCP server (CJS) consumes it; the TUI itself only writes the file.
59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import * as fs from 'fs/promises';
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import * as path from 'path';
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import * as os from 'os';
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import { readSelection, FRESHNESS_MS } from '../../src/state-read';
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async function tmpFile(content: string): Promise<string> {
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const dir = await fs.mkdtemp(path.join(os.tmpdir(), 'phobics-read-'));
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const f = path.join(dir, 'tui-state.json');
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await fs.writeFile(f, content, 'utf8');
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return f;
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}
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const FRESH = JSON.stringify({
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version: 1,
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updated_at: new Date().toISOString(),
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project_dir: '/p',
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device: 'D1',
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selection: {
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kind: 'FB',
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name: 'FB_Test',
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path: 'a/FB_Test.st',
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abs_path: '/abs/a/FB_Test.st',
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},
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viewer_line: 12,
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});
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describe('readSelection', () => {
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it('returns the parsed payload when fresh', async () => {
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const f = await tmpFile(FRESH);
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const r = await readSelection(f);
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expect(r.status).toBe('ok');
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if (r.status === 'ok') {
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expect(r.payload.device).toBe('D1');
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expect(r.payload.selection.name).toBe('FB_Test');
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}
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});
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it('returns stale when updated_at is older than the freshness window', async () => {
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const old = JSON.stringify({
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...JSON.parse(FRESH),
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updated_at: new Date(Date.now() - FRESHNESS_MS - 5000).toISOString(),
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});
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const f = await tmpFile(old);
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const r = await readSelection(f);
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expect(r.status).toBe('stale');
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});
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it('returns missing when the file does not exist', async () => {
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const r = await readSelection('/nonexistent/tui-state.json');
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expect(r.status).toBe('missing');
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});
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it('returns invalid when the JSON is malformed', async () => {
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const f = await tmpFile('not json');
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const r = await readSelection(f);
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expect(r.status).toBe('invalid');
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});
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});
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