1 files changed, 55 insertions, 0 deletions
diff --git a/third_party/libwebrtc/call/adaptation/resource_unittest.cc b/third_party/libwebrtc/call/adaptation/resource_unittest.cc
new file mode 100644
index 0000000000..a2291dfdce
--- /dev/null
+++ b/third_party/libwebrtc/call/adaptation/resource_unittest.cc
@@ -0,0 +1,55 @@
+/*
+ *  Copyright 2020 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "api/adaptation/resource.h"
+
+#include <memory>
+
+#include "api/scoped_refptr.h"
+#include "call/adaptation/test/fake_resource.h"
+#include "call/adaptation/test/mock_resource_listener.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+
+using ::testing::_;
+using ::testing::StrictMock;
+
+class ResourceTest : public ::testing::Test {
+ public:
+  ResourceTest() : fake_resource_(FakeResource::Create("FakeResource")) {}
+
+ protected:
+  rtc::scoped_refptr<FakeResource> fake_resource_;
+};
+
+TEST_F(ResourceTest, RegisteringListenerReceivesCallbacks) {
+  StrictMock<MockResourceListener> resource_listener;
+  fake_resource_->SetResourceListener(&resource_listener);
+  EXPECT_CALL(resource_listener, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([](rtc::scoped_refptr<Resource> resource,
+                   ResourceUsageState usage_state) {
+        EXPECT_EQ(ResourceUsageState::kOveruse, usage_state);
+      });
+  fake_resource_->SetUsageState(ResourceUsageState::kOveruse);
+  fake_resource_->SetResourceListener(nullptr);
+}
+
+TEST_F(ResourceTest, UnregisteringListenerStopsCallbacks) {
+  StrictMock<MockResourceListener> resource_listener;
+  fake_resource_->SetResourceListener(&resource_listener);
+  fake_resource_->SetResourceListener(nullptr);
+  EXPECT_CALL(resource_listener, OnResourceUsageStateMeasured(_, _)).Times(0);
+  fake_resource_->SetUsageState(ResourceUsageState::kOveruse);
+}
+
+}  // namespace webrtc