Abseil Common Libraries (C++) (grcp 依赖)
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61 lines
1.8 KiB
61 lines
1.8 KiB
6 years ago
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// Copyright 2018 The Abseil Authors.
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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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#include <cstddef>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/container/internal/hashtablez_sampler.h"
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namespace absl {
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namespace container_internal {
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class HashtablezInfoHandlePeer {
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public:
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static bool IsSampled(const HashtablezInfoHandle& h) {
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return h.info_ != nullptr;
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}
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};
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namespace {
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bool samples[3]{true, true, true};
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// We do this test in a global object to test that this works even before main.
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struct Global {
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Global() {
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// By default it is sampled.
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samples[0] = HashtablezInfoHandlePeer::IsSampled(Sample());
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// Even with a large parameter, it is sampled.
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SetHashtablezSampleParameter(100);
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samples[1] = HashtablezInfoHandlePeer::IsSampled(Sample());
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// Even if we turn it off, it is still sampled.
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SetHashtablezEnabled(false);
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samples[2] = HashtablezInfoHandlePeer::IsSampled(Sample());
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}
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} global;
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TEST(kAbslContainerInternalSampleEverything, Works) {
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EXPECT_THAT(samples, testing::Each(true));
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EXPECT_TRUE(kAbslContainerInternalSampleEverything);
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// One more after main()
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EXPECT_TRUE(HashtablezInfoHandlePeer::IsSampled(Sample()));
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}
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} // namespace
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} // namespace container_internal
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} // namespace absl
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