1 files changed, 62 insertions, 0 deletions
diff --git a/browser/components/doh/test/unit/test_DNSLookup.js b/browser/components/doh/test/unit/test_DNSLookup.js
new file mode 100644
index 0000000000..5951445f13
--- /dev/null
+++ b/browser/components/doh/test/unit/test_DNSLookup.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+"use strict";
+
+add_task(setup);
+
+add_task(async function test_SuccessfulRandomDNSLookup() {
+  let deferred = PromiseUtils.defer();
+  let lookup = new DNSLookup(
+    null,
+    trrServer1,
+    (request, record, status, usedDomain, retryCount) => {
+      deferred.resolve({ request, record, status, usedDomain, retryCount });
+    }
+  );
+  lookup.doLookup();
+  let result = await deferred.promise;
+  Assert.ok(result.usedDomain.endsWith(".firefox-dns-perf-test.net."));
+  Assert.equal(result.status, Cr.NS_OK);
+  Assert.ok(result.record.QueryInterface(Ci.nsIDNSAddrRecord));
+  Assert.ok(result.record.IsTRR());
+  Assert.greater(result.record.trrFetchDuration, 0);
+  Assert.equal(result.retryCount, 1);
+});
+
+add_task(async function test_SuccessfulSpecifiedDNSLookup() {
+  let deferred = PromiseUtils.defer();
+  let lookup = new DNSLookup(
+    "foo.example.com",
+    trrServer1,
+    (request, record, status, usedDomain, retryCount) => {
+      deferred.resolve({ request, record, status, usedDomain, retryCount });
+    }
+  );
+  lookup.doLookup();
+  let result = await deferred.promise;
+  Assert.equal(result.usedDomain, "foo.example.com");
+  Assert.equal(result.status, Cr.NS_OK);
+  Assert.ok(result.record.QueryInterface(Ci.nsIDNSAddrRecord));
+  Assert.ok(result.record.IsTRR());
+  Assert.greater(result.record.trrFetchDuration, 0);
+  Assert.equal(result.retryCount, 1);
+});
+
+add_task(async function test_FailedDNSLookup() {
+  let deferred = PromiseUtils.defer();
+  let lookup = new DNSLookup(
+    null,
+    `https://foo.example.com:${h2Port}/doh?responseIP=none`,
+    (request, record, status, usedDomain, retryCount) => {
+      deferred.resolve({ request, record, status, usedDomain, retryCount });
+    }
+  );
+  lookup.doLookup();
+  let result = await deferred.promise;
+  Assert.ok(result.usedDomain.endsWith(".firefox-dns-perf-test.net."));
+  Assert.notEqual(result.status, Cr.NS_OK);
+  Assert.equal(result.record, null);
+  Assert.equal(result.retryCount, 3);
+});