Moves network unit types to API.
This prepares for being able to inject network congestion controllers.
And makes it easier to use the units in other parts of the code.
Bug: webrtc:9155
Change-Id: Ib8f9c1c97b06d791a01c3376046933d576ae46f9
Reviewed-on: https://webrtc-review.googlesource.com/70201
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23168}diff --git a/api/units/data_rate_unittest.cc b/api/units/data_rate_unittest.cc
new file mode 100644
index 0000000..d4dd192
--- /dev/null
+++ b/api/units/data_rate_unittest.cc
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018 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/units/data_rate.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+TEST(DataRateTest, GetBackSameValues) {
+ const int64_t kValue = 123 * 8;
+ EXPECT_EQ(DataRate::bits_per_second(kValue).bits_per_second(), kValue);
+ EXPECT_EQ(DataRate::bps(kValue).bps(), kValue);
+ EXPECT_EQ(DataRate::kbps(kValue).kbps(), kValue);
+}
+
+TEST(DataRateTest, GetDifferentPrefix) {
+ const int64_t kValue = 123 * 8000;
+ EXPECT_EQ(DataRate::bps(kValue).kbps(), kValue / 1000);
+}
+
+TEST(DataRateTest, IdentityChecks) {
+ const int64_t kValue = 3000;
+ EXPECT_TRUE(DataRate::Zero().IsZero());
+ EXPECT_FALSE(DataRate::bits_per_second(kValue).IsZero());
+
+ EXPECT_TRUE(DataRate::Infinity().IsInfinite());
+ EXPECT_FALSE(DataRate::Zero().IsInfinite());
+ EXPECT_FALSE(DataRate::bits_per_second(kValue).IsInfinite());
+
+ EXPECT_FALSE(DataRate::Infinity().IsFinite());
+ EXPECT_TRUE(DataRate::bits_per_second(kValue).IsFinite());
+ EXPECT_TRUE(DataRate::Zero().IsFinite());
+}
+
+TEST(DataRateTest, ComparisonOperators) {
+ const int64_t kSmall = 450;
+ const int64_t kLarge = 451;
+ const DataRate small = DataRate::bits_per_second(kSmall);
+ const DataRate large = DataRate::bits_per_second(kLarge);
+
+ EXPECT_EQ(DataRate::Zero(), DataRate::bps(0));
+ EXPECT_EQ(DataRate::Infinity(), DataRate::Infinity());
+ EXPECT_EQ(small, small);
+ EXPECT_LE(small, small);
+ EXPECT_GE(small, small);
+ EXPECT_NE(small, large);
+ EXPECT_LE(small, large);
+ EXPECT_LT(small, large);
+ EXPECT_GE(large, small);
+ EXPECT_GT(large, small);
+ EXPECT_LT(DataRate::Zero(), small);
+ EXPECT_GT(DataRate::Infinity(), large);
+}
+
+TEST(DataRateTest, MathOperations) {
+ const int64_t kValueA = 450;
+ const int64_t kValueB = 267;
+ const DataRate size_a = DataRate::bits_per_second(kValueA);
+ const int32_t kInt32Value = 123;
+ const double kFloatValue = 123.0;
+ EXPECT_EQ((size_a * kValueB).bits_per_second(), kValueA * kValueB);
+ EXPECT_EQ((size_a * kInt32Value).bits_per_second(), kValueA * kInt32Value);
+ EXPECT_EQ((size_a * kFloatValue).bits_per_second(), kValueA * kFloatValue);
+}
+
+TEST(UnitConversionTest, DataRateAndDataSizeAndTimeDelta) {
+ const int64_t kSeconds = 5;
+ const int64_t kBitsPerSecond = 440;
+ const int64_t kBytes = 44000;
+ const TimeDelta delta_a = TimeDelta::seconds(kSeconds);
+ const DataRate rate_b = DataRate::bits_per_second(kBitsPerSecond);
+ const DataSize size_c = DataSize::bytes(kBytes);
+ EXPECT_EQ((delta_a * rate_b).bytes(), kSeconds * kBitsPerSecond / 8);
+ EXPECT_EQ((rate_b * delta_a).bytes(), kSeconds * kBitsPerSecond / 8);
+ EXPECT_EQ((size_c / delta_a).bits_per_second(), kBytes * 8 / kSeconds);
+ EXPECT_EQ((size_c / rate_b).seconds(), kBytes * 8 / kBitsPerSecond);
+}
+
+#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+TEST(UnitConversionTest, DivisionByZeroFails) {
+ const DataSize non_zero_size = DataSize::bytes(100);
+ const DataSize zero_size = DataSize::Zero();
+ const DataRate zero_rate = DataRate::Zero();
+ const TimeDelta zero_delta = TimeDelta::Zero();
+
+ EXPECT_DEATH(non_zero_size / zero_rate, "");
+ EXPECT_DEATH(non_zero_size / zero_delta, "");
+ EXPECT_DEATH(zero_size / zero_rate, "");
+ EXPECT_DEATH(zero_size / zero_delta, "");
+}
+
+TEST(UnitConversionTest, DivisionFailsOnLargeSize) {
+ // Note that the failure is expected since the current implementation is
+ // implementated in a way that does not support division of large sizes. If
+ // the implementation is changed, this test can safely be removed.
+ const int64_t kJustSmallEnoughForDivision =
+ std::numeric_limits<int64_t>::max() / 8000000;
+ const int64_t kToolargeForDivision = kJustSmallEnoughForDivision + 1;
+ const DataSize large_size = DataSize::bytes(kJustSmallEnoughForDivision);
+ const DataSize too_large_size = DataSize::bytes(kToolargeForDivision);
+ const DataRate data_rate = DataRate::kbps(100);
+ const TimeDelta time_delta = TimeDelta::ms(100);
+ EXPECT_TRUE((large_size / data_rate).IsFinite());
+ EXPECT_TRUE((large_size / time_delta).IsFinite());
+
+ EXPECT_DEATH(too_large_size / data_rate, "");
+ EXPECT_DEATH(too_large_size / time_delta, "");
+}
+#endif // GTEST_HAS_DEATH_TEST && !!defined(WEBRTC_ANDROID)
+} // namespace test
+} // namespace webrtc