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99 lines
3.7 KiB
99 lines
3.7 KiB
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "Fps.h"
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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namespace android {
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TEST(FpsTest, construct) {
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Fps fpsDefault;
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EXPECT_FALSE(fpsDefault.isValid());
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Fps fps1(60.0f);
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EXPECT_TRUE(fps1.isValid());
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Fps fps2 = Fps::fromPeriodNsecs(static_cast<nsecs_t>(1e9f / 60.0f));
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EXPECT_TRUE(fps2.isValid());
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EXPECT_TRUE(fps1.equalsWithMargin(fps2));
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}
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TEST(FpsTest, compare) {
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constexpr float kEpsilon = 1e-4f;
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const Fps::EqualsInBuckets equalsInBuckets;
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const Fps::EqualsWithMargin equalsWithMargin;
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EXPECT_TRUE(Fps(60.0f).equalsWithMargin(Fps(60.f)));
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EXPECT_TRUE(Fps(60.0f).equalsWithMargin(Fps(60.f - kEpsilon)));
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EXPECT_TRUE(Fps(60.0f).equalsWithMargin(Fps(60.f + kEpsilon)));
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EXPECT_TRUE(equalsInBuckets(Fps(60.0f), Fps(60.0f)));
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EXPECT_TRUE(equalsInBuckets(Fps(60.0f), Fps(60.0f - kEpsilon)));
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EXPECT_TRUE(equalsInBuckets(Fps(60.0f), Fps(60.0f + kEpsilon)));
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EXPECT_TRUE(equalsWithMargin(Fps(60.0f), Fps(60.0f)));
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EXPECT_TRUE(equalsWithMargin(Fps(60.0f), Fps(60.0f - kEpsilon)));
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EXPECT_TRUE(equalsWithMargin(Fps(60.0f), Fps(60.0f + kEpsilon)));
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EXPECT_TRUE(Fps(60.0f).lessThanOrEqualWithMargin(Fps(60.f + kEpsilon)));
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EXPECT_TRUE(Fps(60.0f).lessThanOrEqualWithMargin(Fps(60.f)));
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EXPECT_TRUE(Fps(60.0f).lessThanOrEqualWithMargin(Fps(60.f - kEpsilon)));
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EXPECT_TRUE(Fps(60.0f).greaterThanOrEqualWithMargin(Fps(60.f + kEpsilon)));
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EXPECT_TRUE(Fps(60.0f).greaterThanOrEqualWithMargin(Fps(60.f)));
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EXPECT_TRUE(Fps(60.0f).greaterThanOrEqualWithMargin(Fps(60.f - kEpsilon)));
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// Fps with difference of 1 should be different
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EXPECT_FALSE(Fps(60.0f).equalsWithMargin(Fps(61.f)));
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EXPECT_TRUE(Fps(60.0f).lessThanWithMargin(Fps(61.f)));
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EXPECT_TRUE(Fps(60.0f).greaterThanWithMargin(Fps(59.f)));
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// These are common refresh rates which should be different.
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EXPECT_FALSE(Fps(60.0f).equalsWithMargin(Fps(59.94f)));
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EXPECT_TRUE(Fps(60.0f).greaterThanWithMargin(Fps(59.94f)));
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EXPECT_FALSE(equalsInBuckets(Fps(60.0f), Fps(59.94f)));
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EXPECT_FALSE(equalsWithMargin(Fps(60.0f), Fps(59.94f)));
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EXPECT_NE(std::hash<Fps>()(Fps(60.0f)), std::hash<Fps>()(Fps(59.94f)));
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EXPECT_FALSE(Fps(30.0f).equalsWithMargin(Fps(29.97f)));
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EXPECT_TRUE(Fps(30.0f).greaterThanWithMargin(Fps(29.97f)));
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EXPECT_FALSE(equalsInBuckets(Fps(30.0f), Fps(29.97f)));
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EXPECT_FALSE(equalsWithMargin(Fps(30.0f), Fps(29.97f)));
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EXPECT_NE(std::hash<Fps>()(Fps(30.0f)), std::hash<Fps>()(Fps(29.97f)));
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}
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TEST(FpsTest, getIntValue) {
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EXPECT_EQ(30, Fps(30.1f).getIntValue());
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EXPECT_EQ(31, Fps(30.9f).getIntValue());
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EXPECT_EQ(31, Fps(30.5f).getIntValue());
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}
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TEST(FpsTest, equalsInBucketsImpliesEqualHashes) {
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constexpr float kStep = 1e-4f;
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const Fps::EqualsInBuckets equals;
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for (float fps = 30.0f; fps < 31.0f; fps += kStep) {
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const Fps left(fps);
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const Fps right(fps + kStep);
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if (equals(left, right)) {
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ASSERT_EQ(std::hash<Fps>()(left), std::hash<Fps>()(right))
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<< "left= " << left << " right=" << right;
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}
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}
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}
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} // namespace android
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