NQE: Move params from the estimator class to the params class

net/nqe/network_quality_estimator_params_unittest.cc

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/nqe/network_quality_estimator_params.h"
+
+#include <map>
+#include <string>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace nqe {
+
+namespace internal {
+
+namespace {
+
+// Tests if |weight_multiplier_per_second()| returns correct value for various
+// values of half life parameter.
+TEST(NetworkQualityEstimatorParamsTest, HalfLifeParam) {
+  std::map<std::string, std::string> variation_params;
+
+  const struct {
+    std::string description;
+    std::string variation_params_value;
+    double expected_weight_multiplier;
+  } tests[] = {
+      {"Half life parameter is not set, default value should be used",
+       std::string(), 0.988},
+      {"Half life parameter is set to negative, default value should be used",
+       "-100", 0.988},
+      {"Half life parameter is set to zero, default value should be used", "0",
+       0.988},
+      {"Half life parameter is set correctly", "10", 0.933},
+  };
+
+  for (const auto& test : tests) {
+    variation_params["HalfLifeSeconds"] = test.variation_params_value;
+    NetworkQualityEstimatorParams params(variation_params);
+    EXPECT_NEAR(test.expected_weight_multiplier,
+                params.weight_multiplier_per_second(), 0.001)
+        << test.description;
+  }
+}
+
+}  // namespace
+
+}  // namespace internal
+
+}  // namespace nqe
+
+}  // namespace net