basic test coverage

Signed-off-by: jukie <10012479+Jukie@users.noreply.github.com>

Author: jukie

source/extensions/load_balancing_policies/load_aware_locality/config.cc

@@ -10,7 +10,7 @@ Upstream::ThreadAwareLoadBalancerPtr Factory::create(OptRef<const Upstream::Load
                                                      const Upstream::PrioritySet&, Runtime::Loader&,
                                                      Envoy::Random::RandomGenerator&, TimeSource&) {
   // TODO(jukie): Implement load-aware locality load balancer.
-  PANIC("not yet implemented");
+  return nullptr;
 }
 
 absl::StatusOr<Upstream::LoadBalancerConfigPtr>

test/extensions/load_balancing_policies/load_aware_locality/BUILD

@@ -0,0 +1,26 @@
+load(
+    "//bazel:envoy_build_system.bzl",
+    "envoy_package",
+)
+load(
+    "//test/extensions:extensions_build_system.bzl",
+    "envoy_extension_cc_test",
+)
+
+licenses(["notice"])  # Apache 2
+
+envoy_package()
+
+envoy_extension_cc_test(
+    name = "config_test",
+    srcs = ["config_test.cc"],
+    extension_names = ["envoy.load_balancing_policies.load_aware_locality"],
+    rbe_pool = "6gig",
+    deps = [
+        "//source/extensions/load_balancing_policies/load_aware_locality:config",
+        "//test/mocks/server:factory_context_mocks",
+        "//test/mocks/upstream:cluster_info_mocks",
+        "//test/mocks/upstream:priority_set_mocks",
+        "@envoy_api//envoy/config/core/v3:pkg_cc_proto",
+    ],
+)

test/extensions/load_balancing_policies/load_aware_locality/config_test.cc

@@ -0,0 +1,43 @@
+#include "envoy/config/core/v3/extension.pb.h"
+
+#include "source/extensions/load_balancing_policies/load_aware_locality/config.h"
+
+#include "test/mocks/server/factory_context.h"
+#include "test/mocks/upstream/cluster_info.h"
+#include "test/mocks/upstream/priority_set.h"
+
+namespace Envoy {
+namespace Extensions {
+namespace LoadBalancingPolicies {
+namespace LoadAwareLocality {
+namespace {
+
+TEST(LoadAwareLocalityConfigTest, CreateFactory) {
+  NiceMock<Server::Configuration::MockServerFactoryContext> context;
+  NiceMock<Upstream::MockClusterInfo> cluster_info;
+  NiceMock<Upstream::MockPrioritySet> main_thread_priority_set;
+
+  envoy::config::core::v3::TypedExtensionConfig config;
+  config.set_name("envoy.load_balancing_policies.load_aware_locality");
+  LoadAwareLocalityProto config_msg;
+  config.mutable_typed_config()->PackFrom(config_msg);
+
+  auto& factory = Config::Utility::getAndCheckFactory<Upstream::TypedLoadBalancerFactory>(config);
+  EXPECT_EQ("envoy.load_balancing_policies.load_aware_locality", factory.name());
+
+  // loadConfig is stubbed to return nullptr for now.
+  auto lb_config = factory.loadConfig(context, *factory.createEmptyConfigProto());
+  EXPECT_TRUE(lb_config.ok());
+
+  // create is stubbed to return nullptr for now.
+  auto thread_aware_lb =
+      factory.create({}, cluster_info, main_thread_priority_set, context.runtime_loader_,
+                     context.api_.random_, context.time_system_);
+  EXPECT_EQ(nullptr, thread_aware_lb);
+}
+
+} // namespace
+} // namespace LoadAwareLocality
+} // namespace LoadBalancingPolicies
+} // namespace Extensions
+} // namespace Envoy