test: add TLSA record query tests

Author: rithvikvibhu

test/common/internet.js

@@ -38,6 +38,8 @@ const addresses = {
   CNAME_HOST: 'blog.nodejs.org',
   // A host with NS records registered
   NS_HOST: 'nodejs.org',
+  // A host with TLSA records registered
+  TLSA_HOST: '_443._tcp.fedoraproject.org',
   // A host with TXT records registered
   TXT_HOST: 'nodejs.org',
   // An accessible IPv4 DNS server

test/internet/test-dns-cares-domains.js

@@ -11,6 +11,7 @@ const methods = [
   'resolveCname',
   'resolveMx',
   'resolveNs',
+  'resolveTlsa',
   'resolveTxt',
   'resolveSrv',
   'resolvePtr',

test/internet/test-dns.js

@@ -479,6 +479,47 @@ TEST(function test_resolveCname_failure(done) {
   checkWrap(req);
 });
 
+TEST(async function test_resolveTlsa(done) {
+  function validateResult(result) {
+    assert.ok(Array.isArray(result));
+    assert.ok(result.length >= 1);
+    for (const record of result) {
+      assert.strictEqual(typeof record.certUsage, 'number');
+      assert.strictEqual(typeof record.selector, 'number');
+      assert.strictEqual(typeof record.match, 'number');
+      assert.ok(record.data instanceof ArrayBuffer);
+    }
+  }
+
+  validateResult(await dnsPromises.resolveTlsa(addresses.TLSA_HOST));
+
+  const req = dns.resolveTlsa(addresses.TLSA_HOST, function(err, records) {
+    assert.ifError(err);
+    validateResult(records);
+    done();
+  });
+
+  checkWrap(req);
+});
+
+TEST(function test_resolveTlsa_failure(done) {
+  dnsPromises.resolveTlsa(addresses.NOT_FOUND)
+    .then(common.mustNotCall())
+    .catch(common.mustCall((err) => {
+      assert.strictEqual(err.code, 'ENOTFOUND');
+    }));
+
+  const req = dns.resolveTlsa(addresses.NOT_FOUND, function(err, result) {
+    assert.ok(err instanceof Error);
+    assert.strictEqual(err.code, 'ENOTFOUND');
+
+    assert.strictEqual(result, undefined);
+
+    done();
+  });
+
+  checkWrap(req);
+});
 
 TEST(async function test_resolveTxt(done) {
   function validateResult(result) {

test/internet/test-trace-events-dns.js

@@ -34,6 +34,7 @@ const tests = {
   'resolveCname': 'dns.resolveCname("example.com", (err, res) => {});',
   'resolveMx': 'dns.resolveMx("example.com", (err, res) => {});',
   'resolveNs': 'dns.resolveNs("example.com", (err, res) => {});',
+  'resolveTlsa': 'dns.resolveTlsa("example.com", (err, res) => {});',
   'resolveTxt': 'dns.resolveTxt("example.com", (err, res) => {});',
   'resolveSrv': 'dns.resolveSrv("example.com", (err, res) => {});',
   'resolvePtr': 'dns.resolvePtr("example.com", (err, res) => {});',