brain/tools/enforce-tdd-real-test-verifier.test.mjs

import { describe, it, expect } from 'vitest';
import { decide } from './enforce-tdd-real-test-verifier.mjs';

describe('enforce-tdd-real-test-verifier decide()', () => {
  it('allows real test with expect + it covering edited prod file', () => {
    const r = decide({
      filePath: 'tools/foo.test.mjs',
      content: "import { foo } from './foo.mjs';\nit('foo works', () => { expect(foo()).toBe(1); });",
      editedFiles: ['tools/foo.mjs'],
    });
    expect(r.block).toBe(false);
  });
  it('blocks test with no expect()', () => {
    const r = decide({
      filePath: 'tools/foo.test.mjs',
      content: "it('does nothing', () => { /* sentinel */ });",
      editedFiles: ['tools/foo.mjs'],
    });
    expect(r.block).toBe(true);
    expect(r.reason).toMatch(/no_expect_call/);
  });
  it('blocks test with no it/test block', () => {
    const r = decide({
      filePath: 'tools/foo.test.mjs',
      content: "expect(1).toBe(1);",
      editedFiles: ['tools/foo.mjs'],
    });
    expect(r.block).toBe(true);
    expect(r.reason).toMatch(/no_test_block/);
  });
  it('allows when filePath is not a test file (no-op)', () => {
    const r = decide({
      filePath: 'tools/foo.mjs',
      content: 'export const foo = 1;',
      editedFiles: [],
    });
    expect(r.block).toBe(false);
  });
  it('does NOT misclassify a prod file whose name merely ends in spec.<ext>', () => {
    // Regex bug: unescaped dots matched the substring "spec" in 'artifact-from-spec.mjs'.
    // A prod file is not a test file — it must not be checked for expect()/it().
    const r = decide({
      filePath: 'tools/artifact-from-spec.mjs',
      content: 'export const buildArtifact = 1;',
      editedFiles: [],
    });
    expect(r.block).toBe(false);
  });
  it('still treats a genuine .test.mjs as a test file (regression guard)', () => {
    // Real test file with no expect() must still be blocked after the fix.
    const r = decide({
      filePath: 'tools/artifact-from-spec.test.mjs',
      content: "it('x', () => {});",
      editedFiles: [],
    });
    expect(r.block).toBe(true);
    expect(r.reason).toMatch(/no_expect_call/);
  });
});