Templatize percentile_filter.h and move it to base/analytics.

webrtc/modules/video_coding/percentile_filter_unittest.cc

Index: webrtc/modules/video_coding/percentile_filter_unittest.cc
diff --git a/webrtc/modules/video_coding/percentile_filter_unittest.cc b/webrtc/modules/video_coding/percentile_filter_unittest.cc
deleted file mode 100644
index 56cd99b39d2b644306f96bb300134d8f70ee422f..0000000000000000000000000000000000000000
--- a/webrtc/modules/video_coding/percentile_filter_unittest.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- *  Copyright 2016 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 <algorithm>
-
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/modules/video_coding/percentile_filter.h"
-#include "webrtc/test/gtest.h"
-
-namespace webrtc {
-
-class PercentileFilterTest : public ::testing::TestWithParam<float> {
- public:
-  PercentileFilterTest() : filter_(GetParam()) {
-    // Make sure the tests are deterministic by seeding with a constant.
-    srand(42);
-  }
-
- protected:
-  PercentileFilter filter_;
-
- private:
-  RTC_DISALLOW_COPY_AND_ASSIGN(PercentileFilterTest);
-};
-
-INSTANTIATE_TEST_CASE_P(PercentileFilterTests,
-                        PercentileFilterTest,
-                        ::testing::Values(0.0f, 0.1f, 0.5f, 0.9f, 1.0f));
-
-TEST(PercentileFilterTest, MinFilter) {
-  PercentileFilter filter(0.0f);
-  filter.Insert(4);
-  EXPECT_EQ(4, filter.GetPercentileValue());
-  filter.Insert(3);
-  EXPECT_EQ(3, filter.GetPercentileValue());
-}
-
-TEST(PercentileFilterTest, MaxFilter) {
-  PercentileFilter filter(1.0f);
-  filter.Insert(3);
-  EXPECT_EQ(3, filter.GetPercentileValue());
-  filter.Insert(4);
-  EXPECT_EQ(4, filter.GetPercentileValue());
-}
-
-TEST_P(PercentileFilterTest, EmptyFilter) {
-  EXPECT_EQ(0, filter_.GetPercentileValue());
-  filter_.Insert(3);
-  filter_.Erase(3);
-  EXPECT_EQ(0, filter_.GetPercentileValue());
-}
-
-TEST_P(PercentileFilterTest, EraseNonExistingElement) {
-  filter_.Erase(3);
-  EXPECT_EQ(0, filter_.GetPercentileValue());
-  filter_.Insert(4);
-  filter_.Erase(3);
-  EXPECT_EQ(4, filter_.GetPercentileValue());
-}
-
-TEST_P(PercentileFilterTest, DuplicateElements) {
-  filter_.Insert(3);
-  filter_.Insert(3);
-  filter_.Erase(3);
-  EXPECT_EQ(3, filter_.GetPercentileValue());
-}
-
-TEST_P(PercentileFilterTest, InsertAndEraseTenValuesInRandomOrder) {
-  int64_t zero_to_nine[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
-  // The percentile value of the ten values above.
-  const int64_t expected_value = static_cast<int64_t>(GetParam() * 9);
-
-  // Insert two sets of |zero_to_nine| in random order.
-  for (int i = 0; i < 2; ++i) {
-    std::random_shuffle(zero_to_nine, zero_to_nine + 10);
-    for (int64_t value : zero_to_nine)
-      filter_.Insert(value);
-    // After inserting a full set of |zero_to_nine|, the percentile should
-    // stay constant.
-    EXPECT_EQ(expected_value, filter_.GetPercentileValue());
-  }
-
-  // Insert and erase sets of |zero_to_nine| in random order a few times.
-  for (int i = 0; i < 3; ++i) {
-    std::random_shuffle(zero_to_nine, zero_to_nine + 10);
-    for (int64_t value : zero_to_nine)
-      filter_.Erase(value);
-    EXPECT_EQ(expected_value, filter_.GetPercentileValue());
-
-    std::random_shuffle(zero_to_nine, zero_to_nine + 10);
-    for (int64_t value : zero_to_nine)
-      filter_.Insert(value);
-    EXPECT_EQ(expected_value, filter_.GetPercentileValue());
-  }
-}
-
-}  // namespace webrtc