test: esm loader unknown builtin module

PR-URL: #24183
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Gus Caplan <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: franher

test/fixtures/es-module-loaders/loader-unknown-builtin-module.mjs

@@ -0,0 +1,6 @@
+export async function resolve(specifier, parent, defaultResolve) {
+  if (specifier === 'unknown-builtin-module') {
+    return { url: 'unknown-builtin-module', format: 'builtin' };
+  }
+  return defaultResolve(specifier, parent);
+}

test/parallel/test-loaders-unknown-builtin-module.mjs

@@ -0,0 +1,12 @@
+// Flags: --experimental-modules --loader ./test/fixtures/es-module-loaders/loader-unknown-builtin-module.mjs
+import { expectsError, mustCall } from '../common';
+import assert from 'assert';
+
+const unknownBuiltinModule = 'unknown-builtin-module';
+
+import(unknownBuiltinModule)
+.then(assert.fail, expectsError({
+  code: 'ERR_UNKNOWN_BUILTIN_MODULE',
+  message: `No such built-in module: ${unknownBuiltinModule}`
+}))
+.then(mustCall());