Дмитрий
57 lines
3.4 KiB
JavaScript
57 lines
3.4 KiB
JavaScript
import { describe, it, expect } from 'vitest';
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import { classifyMutationResult, runMutationForFile } from './mutate-runner.mjs';
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import { mkdtempSync, writeFileSync, readFileSync, rmSync } from 'node:fs';
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import { tmpdir } from 'node:os';
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import { join } from 'node:path';
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describe('classifyMutationResult (чистая классификация P18)', () => {
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it('baseline не зелёный → killed:false reason baseline-not-green', () => {
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expect(classifyMutationResult({ baselineGreen: false, mutantOutcomes: [] }))
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.toEqual({ mutationKilled: false, reason: 'baseline-not-green' });
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});
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it('нет валидных мутантов (все loadError) → no-valid-mutants', () => {
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expect(classifyMutationResult({ baselineGreen: true, mutantOutcomes: [{ allGreen: false, loadError: true }] }))
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.toEqual({ mutationKilled: false, reason: 'no-valid-mutants' });
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});
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it('хоть один валидный мутант покраснел (allGreen:false, не loadError) → killed', () => {
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expect(classifyMutationResult({ baselineGreen: true, mutantOutcomes: [
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{ allGreen: true, loadError: false }, { allGreen: false, loadError: false } ] }))
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.toEqual({ mutationKilled: true, reason: 'ok' });
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});
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it('все валидные мутанты выжили (тест ничего не проверяет) → mutation-survived', () => {
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expect(classifyMutationResult({ baselineGreen: true, mutantOutcomes: [{ allGreen: true, loadError: false }] }))
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.toEqual({ mutationKilled: false, reason: 'mutation-survived' });
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});
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});
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describe('runMutationForFile (in-place + восстановление SE-LB-3)', () => {
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it('восстанавливает оригинал файла после прогона (даже если мутант валит тест)', () => {
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const dir = mkdtempSync(join(tmpdir(), 'mut-'));
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const file = join(dir, 'x.mjs');
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const original = 'export const f = (a, b) => a === b;\n';
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writeFileSync(file, original);
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// Фейковый runTest: baseline зелёный; на мутированном содержимом (=== заменён) — красный.
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const runTest = () => {
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const cur = readFileSync(file, 'utf-8');
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const baseline = cur === original;
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return { allGreen: baseline, numPassed: baseline ? 1 : 0, numFailed: baseline ? 0 : 1, loadError: false };
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};
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const res = runMutationForFile({ filePath: file, generate: (s) => [{ label: 'm', mutated: s.replace('===', '!==') }], runTest });
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expect(res.baselineGreen).toBe(true);
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expect(res.mutantOutcomes.some((o) => o.allGreen === false)).toBe(true);
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expect(readFileSync(file, 'utf-8')).toBe(original); // восстановлен
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rmSync(dir, { recursive: true, force: true });
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});
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it('baseline красный → мутацию не запускает, baselineGreen:false, файл цел', () => {
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const dir = mkdtempSync(join(tmpdir(), 'mut-'));
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const file = join(dir, 'y.mjs');
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writeFileSync(file, 'broken');
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const runTest = () => ({ allGreen: false, numPassed: 0, numFailed: 1, loadError: false });
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const res = runMutationForFile({ filePath: file, generate: () => [{ label: 'm', mutated: 'mutant' }], runTest });
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expect(res.baselineGreen).toBe(false);
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expect(res.mutantOutcomes).toEqual([]);
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expect(readFileSync(file, 'utf-8')).toBe('broken');
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rmSync(dir, { recursive: true, force: true });
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});
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});
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