fixup! crypto: add guards and adjust tests for BoringSSL

Author: panva

test/parallel/test-tls-dhparam-auto-boringssl.js

@@ -0,0 +1,19 @@
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+if (!process.features.openssl_is_boringssl)
+  common.skip('only applies to BoringSSL builds');
+
+const assert = require('assert');
+const tls = require('tls');
+
+// BoringSSL does not provide SSL_CTX_set_dh_auto, so requesting automatic
+// DH parameter selection via `dhparam: 'auto'` must throw.
+assert.throws(() => {
+  tls.createSecureContext({ dhparam: 'auto' });
+}, {
+  code: 'ERR_CRYPTO_UNSUPPORTED_OPERATION',
+  message: 'Automatic DH parameter selection is not supported',
+});