1 files changed, 61 insertions, 0 deletions
diff --git a/netwerk/test/gtest/TestSupportAlpn.cpp b/netwerk/test/gtest/TestSupportAlpn.cpp
new file mode 100644
index 0000000000..ee67c854e6
--- /dev/null
+++ b/netwerk/test/gtest/TestSupportAlpn.cpp
@@ -0,0 +1,61 @@
+#include "gtest/gtest.h"
+
+#include "mozilla/Preferences.h"
+#include "nsIHttpProtocolHandler.h"
+#include "nsHttp.h"
+
+namespace mozilla {
+namespace net {
+
+TEST(TestSupportAlpn, testSvcParamKeyAlpn)
+{
+  Preferences::SetBool("network.http.http3.enabled", true);
+  // initialize gHttphandler.
+  nsCOMPtr<nsIHttpProtocolHandler> http =
+      do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http");
+
+  // h2 and h3 are enabled, so first appearance h3 alpn-id is returned.
+  nsTArray<nsCString> alpn = {"h3-28"_ns, "h3-27"_ns, "h2"_ns, "http/1.1"_ns};
+  Tuple<nsCString, bool> result = SelectAlpnFromAlpnList(alpn, false, false);
+  ASSERT_EQ(Get<0>(result), "h3-28"_ns);
+  ASSERT_EQ(Get<1>(result), true);
+
+  // We don't support h3-26, so we should choose h2.
+  alpn = {"h3-26"_ns, "h2"_ns, "http/1.1"_ns};
+  result = SelectAlpnFromAlpnList(alpn, false, false);
+  ASSERT_EQ(Get<0>(result), "h2"_ns);
+  ASSERT_EQ(Get<1>(result), false);
+
+  // h3 is disabled, so we will use h2.
+  alpn = {"h3-28"_ns, "h3-27"_ns, "h2"_ns, "http/1.1"_ns};
+  result = SelectAlpnFromAlpnList(alpn, false, true);
+  ASSERT_EQ(Get<0>(result), "h2"_ns);
+  ASSERT_EQ(Get<1>(result), false);
+
+  // h3 is disabled and h2 is not found, so we will select http/1.1.
+  alpn = {"h3-28"_ns, "h3-27"_ns, "http/1.1"_ns};
+  result = SelectAlpnFromAlpnList(alpn, false, true);
+  ASSERT_EQ(Get<0>(result), "http/1.1"_ns);
+  ASSERT_EQ(Get<1>(result), false);
+
+  // h3 and h2 are disabled, so we will select http/1.1.
+  alpn = {"h3-28"_ns, "h3-27"_ns, "h2"_ns, "http/1.1"_ns};
+  result = SelectAlpnFromAlpnList(alpn, true, true);
+  ASSERT_EQ(Get<0>(result), "http/1.1"_ns);
+  ASSERT_EQ(Get<1>(result), false);
+
+  // h3 and h2 are disabled and http1.1 is not found, we return an empty string.
+  alpn = {"h3-28"_ns, "h3-27"_ns, "h2"_ns};
+  result = SelectAlpnFromAlpnList(alpn, true, true);
+  ASSERT_EQ(Get<0>(result), ""_ns);
+  ASSERT_EQ(Get<1>(result), false);
+
+  // No supported alpn.
+  alpn = {"ftp"_ns, "h2c"_ns};
+  result = SelectAlpnFromAlpnList(alpn, true, true);
+  ASSERT_EQ(Get<0>(result), ""_ns);
+  ASSERT_EQ(Get<1>(result), false);
+}
+
+}  // namespace net
+}  // namespace mozilla