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webrtc/modules/remote_bitrate_estimator/test/bwe_unittest.cc

Index: webrtc/modules/remote_bitrate_estimator/test/bwe_unittest.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/test/bwe_unittest.cc b/webrtc/modules/remote_bitrate_estimator/test/bwe_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a8c475daf68e446d132e569838b8c9448bd22a98
--- /dev/null
+++ b/webrtc/modules/remote_bitrate_estimator/test/bwe_unittest.cc
@@ -0,0 +1,90 @@
+/*
+ *  Copyright (c) 2015 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 "webrtc/modules/remote_bitrate_estimator/test/bwe.h"
+
+#include <vector>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace webrtc {
+namespace testing {
+namespace bwe {
+
+const int kSetCapacity = 10000;
+
+class LinkedSetTest : public ::testing::Test {
+ public:
+  LinkedSetTest() : linked_set_(kSetCapacity) {}
+  ~LinkedSetTest() {}
+
+ protected:
+  LinkedSet linked_set_;
+};
+
+TEST_F(LinkedSetTest, EmptySet) {
+  EXPECT_EQ(linked_set_.Max(), 0);
+  EXPECT_EQ(linked_set_.Min(), 0);
+  EXPECT_EQ(linked_set_.OldestSeqNumber(), 0);
+  EXPECT_EQ(linked_set_.NewestSeqNumber(), 0);
+}
+
+TEST_F(LinkedSetTest, SinglePacket) {
+  const uint16_t kSeqNumber = 1;  // Arbitrary.
+  // Other parameters don't matter here.
+  linked_set_.Insert(kSeqNumber, 0, 0, 0);
+  EXPECT_EQ(linked_set_.Max(), kSeqNumber);
+  EXPECT_EQ(linked_set_.Min(), kSeqNumber);
+  EXPECT_EQ(linked_set_.OldestSeqNumber(), kSeqNumber);
+  EXPECT_EQ(linked_set_.NewestSeqNumber(), kSeqNumber);
+}
+
+TEST_F(LinkedSetTest, MultiplePackets) {
+  const uint16_t kNumberPackets = 100;
+
+  std::vector<uint16_t> sequence_numbers;
+  for (size_t i = 0; i < kNumberPackets; ++i) {
+    sequence_numbers.push_back(static_cast<uint16_t>(i + 1));
+  }
+  random_shuffle(sequence_numbers.begin(), sequence_numbers.end());
+
+  for (size_t i = 0; i < kNumberPackets; ++i) {
+    // Other parameters don't matter here.
+    linked_set_.Insert(static_cast<uint16_t>(i), 0, 0, 0);
+  }
+
+  // Packets arriving out of order should not affect the following values:
+  EXPECT_EQ(linked_set_.Max(), kNumberPackets - 1);
+  EXPECT_EQ(linked_set_.Min(), 0);
+  EXPECT_EQ(linked_set_.OldestSeqNumber(), 0);
+  EXPECT_EQ(linked_set_.NewestSeqNumber(), kNumberPackets - 1);
+}
+
+TEST_F(LinkedSetTest, Overflow) {
+  const int kFirstSeqNumber = -100;
+  const int kLastSeqNumber = 100;
+
+  for (int i = kFirstSeqNumber; i <= kLastSeqNumber; ++i) {
+    // Other parameters don't matter here.
+    linked_set_.Insert(static_cast<uint16_t>(i), 0, 0, 0);
+  }
+
+  // Packets arriving out of order should not affect the following values:
+  EXPECT_EQ(linked_set_.Max(), 0xFFFF);
+  EXPECT_EQ(linked_set_.Min(), 0);
+  EXPECT_EQ(linked_set_.OldestSeqNumber(),
+            static_cast<uint16_t>(kFirstSeqNumber));
+  EXPECT_EQ(linked_set_.NewestSeqNumber(),
+            static_cast<uint16_t>(kLastSeqNumber));
+}
+
+}  // namespace bwe
+}  // namespace testing
+}  // namespace webrtc