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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "OperationLimiter.h"
#include <gtest/gtest-spi.h>
#include <netdutils/NetNativeTestBase.h>
namespace android {
namespace netdutils {
class OperationLimiterTest : public NetNativeTestBase {};
TEST_F(OperationLimiterTest, limits) {
OperationLimiter<int> limiter(3);
EXPECT_TRUE(limiter.start(42));
EXPECT_TRUE(limiter.start(42));
EXPECT_TRUE(limiter.start(42));
// Limit reached... calling any number of times should have no effect.
EXPECT_FALSE(limiter.start(42));
EXPECT_FALSE(limiter.start(42));
EXPECT_FALSE(limiter.start(42));
// Finishing a single operations is enough for starting a new one...
limiter.finish(42);
EXPECT_TRUE(limiter.start(42));
// ...but not two!
EXPECT_FALSE(limiter.start(42));
// Different ids should still have quota...
EXPECT_TRUE(limiter.start(666));
limiter.finish(666);
// Finish all pending operations
limiter.finish(42);
limiter.finish(42);
limiter.finish(42);
}
TEST_F(OperationLimiterTest, finishWithoutStart) {
OperationLimiter<int> limiter(1);
// Will output a LOG(FATAL_WITHOUT_ABORT), but we have no way to probe this.
limiter.finish(42);
// This will ensure that the finish() above didn't set a negative value.
EXPECT_TRUE(limiter.start(42));
EXPECT_FALSE(limiter.start(42));
}
TEST_F(OperationLimiterTest, destroyWithActiveOperations) {
// The death message doesn't seem to be captured on Android.
EXPECT_DEBUG_DEATH(
{
OperationLimiter<int> limiter(3);
limiter.start(42);
},
"" /* "active operations */);
}
TEST_F(OperationLimiterTest, globalLimits) {
OperationLimiter<int> limiter(1);
EXPECT_TRUE(limiter.start(42, 2));
// Calling with a different key is okay.
EXPECT_TRUE(limiter.start(43, 2));
// Global limit reached... calling with a different key should have no effect.
EXPECT_FALSE(limiter.start(44, 2));
// Global limit extended... calling with a different key is available again.
EXPECT_TRUE(limiter.start(44, 4));
// Per-key limit reached.
EXPECT_FALSE(limiter.start(44, 4));
// Global limit is still available.
EXPECT_TRUE(limiter.start(45, 4));
// Global limit reached again.
EXPECT_FALSE(limiter.start(46, 4));
// Shrink global limit.
EXPECT_FALSE(limiter.start(46, 3));
// Finish all pending operations
for (const auto& key : {42, 43, 44, 45}) {
limiter.finish(key);
}
}
} // namespace netdutils
} // namespace android
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