test(carriers): pin scanner edge cases and share one registry run

tests/scripts/validate-carrier-closure.test.js

@@ -13,6 +13,17 @@ function validator() {
   return require(SCRIPT_PATH);
 }
 
+let realRun = null;
+function realRegistryRun() {
+  if (!realRun) {
+    const result = childProcess.spawnSync(process.execPath, [SCRIPT_PATH, '--json'], {
+      cwd: REPO_ROOT, encoding: 'utf8', timeout: 120_000,
+    });
+    realRun = { status: result.status, stderr: result.stderr, receipt: JSON.parse(result.stdout) };
+  }
+  return realRun;
+}
+
 function plantSkillScript(root, source) {
   write(root, 'skills/ecc-guide/scripts/tool.js', source);
 }
@@ -21,17 +32,6 @@ function specifiersOf(failures) {
   return failures.map(failure => failure.specifier);
 }
 
-test('the real registry closes: every planned script resolves inside its carrier', () => {
-  const result = validator().validate();
-  assert.equal(result.status, 'success');
-  assert.deepEqual(result.failures, []);
-  assert.equal(result.layouts.length, 5);
-  assert.deepEqual(result.profiles, ['lean@1', 'full@1']);
-  assert.ok(result.scriptCount > 0, 'expected planned JavaScript files to inspect');
-  assert.ok(result.resolvedCount > 0, 'expected at least one resolved relative specifier');
-  assert.ok(result.plannedFileCount > result.scriptCount);
-});
-
 test('a planted require that leaves the carrier tree fails with its specifier', () => withFixture(root => {
   const escape = '../../../../../scripts/lib/context-profile-support';
   plantSkillScript(root, `'use strict';\n\nconst support = require('${escape}');\n\nmodule.exports = { support };\n`);
@@ -69,20 +69,47 @@ test('a require shape quoted inside a string literal is not a dependency', () =>
 }));
 
 test('--json emits a machine-readable receipt and exits zero on a clean registry', () => {
-  const result = childProcess.spawnSync(process.execPath, [SCRIPT_PATH, '--json'], {
-    cwd: REPO_ROOT, encoding: 'utf8', timeout: 120_000,
-  });
-  assert.equal(result.status, 0, result.stderr);
-  const receipt = JSON.parse(result.stdout);
-  assert.equal(receipt.status, 'success');
+  const { status, stderr, receipt } = realRegistryRun();
+  assert.equal(status, 0, stderr);
   assert.equal(receipt.schemaVersion, 'ecc.carrier-closure.v1');
   assert.equal(receipt.projectionCount, receipt.layouts.length * receipt.profiles.length);
-  assert.deepEqual(receipt.failures, []);
   assert.ok(Array.isArray(receipt.warnings));
   assert.ok(Number.isInteger(receipt.scriptCount));
   assert.equal(receipt.loadSmoke, 'deferred');
 });
 
+test('the real registry closes: every planned script resolves inside its carrier', () => {
+  const { receipt } = realRegistryRun();
+  assert.equal(receipt.status, 'success');
+  assert.deepEqual(receipt.failures, []);
+  assert.equal(receipt.layouts.length, 5);
+  assert.deepEqual(receipt.profiles, ['lean@1', 'full@1']);
+  assert.ok(receipt.scriptCount > 0, 'expected planned JavaScript files to inspect');
+  assert.ok(receipt.resolvedCount > 0, 'expected at least one resolved relative specifier');
+  assert.ok(receipt.plannedFileCount > receipt.scriptCount);
+});
+
+const SCANNER_CASES = [
+  ['division before a require', "const r = a / b; require('./after-division');", ['./after-division']],
+  ['regex holding a quote', "const re = /it's/; require('./after-regex');", ['./after-regex']],
+  ['regex holding a slash in a class', "const re = /[/]/g; require('./after-class');", ['./after-class']],
+  ['regex after return', "function f() { return /x/.test(y); } require('./after-return');", ['./after-return']],
+  ['division after a closing paren', "const v = (a) / 2 / 3; require('./after-paren');", ['./after-paren']],
+  ['object braces inside an interpolation', "const s = `a ${ {k: 1}.k } b`; require('./after-template');", ['./after-template']],
+  ['require text inside a template', "const s = `require('./fake')`;", []],
+  ['require inside an interpolation', "const s = `${require('./in-interpolation')}`;", ['./in-interpolation']],
+  ['block comment', "/* require('./commented') */ require('./real');", ['./real']],
+  ['multi-line import', "import {\n  a,\n  b\n} from\n  './multi';", ['./multi']],
+  ['re-export', 'export * from "./reexport.js";', ['./reexport.js']],
+  ['path.join from __dirname', "require(path.join(__dirname, '..', 'lib', 'x.js'));", ['./../lib/x.js']],
+];
+
+for (const [label, source, expected] of SCANNER_CASES) {
+  test(`scanner: ${label}`, () => {
+    assert.deepEqual(validator().extractReferences(source).specifiers.sort(), [...expected].sort());
+  });
+}
+
 test('unknown flags are rejected', () => {
   const result = childProcess.spawnSync(process.execPath, [SCRIPT_PATH, '--write'], {
     cwd: REPO_ROOT, encoding: 'utf8', timeout: 120_000,