ba40f10e6e
writeSelection() emits the v1 state envelope (version, updated_at,
project_dir, device, selection{kind,name,path,abs_path}, viewer_line)
to <file>.<pid>.tmp then atomic-renames into place. mkdir -p the
parent, no .tmp left behind on success.
58 lines
2 KiB
TypeScript
58 lines
2 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 { writeSelection } from '../../src/tui/shared/state-write.ts';
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import { Selection } from '../../src/tui/shared/types.ts';
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async function tmpDir(): Promise<string> {
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return fs.mkdtemp(path.join(os.tmpdir(), 'phobics-tui-'));
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}
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const sampleSelection: Selection = {
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device: 'CodesysRpi',
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pou: {
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name: 'FB_Test',
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kind: 'FB',
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relPath: 'Plc Logic/Application/FB_Test.st',
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absPath: '/abs/Plc Logic/Application/FB_Test.st',
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loc: 87,
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mtimeMs: 0,
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},
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viewerLine: 12,
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};
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describe('writeSelection', () => {
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it('writes a JSON file atomically with v1 envelope', async () => {
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const dir = await tmpDir();
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const target = path.join(dir, 'tui-state.json');
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await writeSelection(target, '/abs/project', sampleSelection);
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const text = await fs.readFile(target, 'utf8');
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const parsed = JSON.parse(text);
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expect(parsed.version).toBe(1);
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expect(parsed.project_dir).toBe('/abs/project');
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expect(parsed.device).toBe('CodesysRpi');
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expect(parsed.selection.name).toBe('FB_Test');
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expect(parsed.selection.kind).toBe('FB');
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expect(parsed.viewer_line).toBe(12);
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expect(typeof parsed.updated_at).toBe('string');
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expect(() => new Date(parsed.updated_at)).not.toThrow();
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});
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it('creates parent directories as needed', async () => {
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const dir = await tmpDir();
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const target = path.join(dir, 'a', 'b', 'tui-state.json');
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await writeSelection(target, '/abs/project', sampleSelection);
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const stat = await fs.stat(target);
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expect(stat.isFile()).toBe(true);
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});
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it('does not leave the .tmp file behind on success', async () => {
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const dir = await tmpDir();
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const target = path.join(dir, 'tui-state.json');
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await writeSelection(target, '/abs/project', sampleSelection);
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const entries = await fs.readdir(dir);
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expect(entries.filter((e) => e.endsWith('.tmp'))).toEqual([]);
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});
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});
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