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// Copyright 2016 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/quic/crypto/quic_compressed_certs_cache.h"
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/macros.h"
#include "base/strings/string_number_conversions.h"
#include "net/quic/crypto/cert_compressor.h"
#include "net/quic/test_tools/crypto_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
using std::vector;
namespace net {
namespace test {
namespace {
class QuicCompressedCertsCacheTest : public testing::Test {
public:
QuicCompressedCertsCacheTest()
: certs_cache_(QuicCompressedCertsCache::kQuicCompressedCertsCacheSize) {}
protected:
QuicCompressedCertsCache certs_cache_;
};
TEST_F(QuicCompressedCertsCacheTest, CacheHit) {
vector<string> certs = {"leaf cert", "intermediate cert", "root cert"};
scoped_refptr<ProofSource::Chain> chain(new ProofSource::Chain(certs));
string common_certs = "common certs";
string cached_certs = "cached certs";
string compressed = "compressed cert";
certs_cache_.Insert(chain, common_certs, cached_certs, compressed);
const string* cached_value =
certs_cache_.GetCompressedCert(chain, common_certs, cached_certs);
ASSERT_NE(nullptr, cached_value);
EXPECT_EQ(*cached_value, compressed);
}
TEST_F(QuicCompressedCertsCacheTest, CacheMiss) {
vector<string> certs = {"leaf cert", "intermediate cert", "root cert"};
scoped_refptr<ProofSource::Chain> chain(new ProofSource::Chain(certs));
string common_certs = "common certs";
string cached_certs = "cached certs";
string compressed = "compressed cert";
certs_cache_.Insert(chain, common_certs, cached_certs, compressed);
EXPECT_EQ(nullptr, certs_cache_.GetCompressedCert(
chain, "mismatched common certs", cached_certs));
EXPECT_EQ(nullptr, certs_cache_.GetCompressedCert(chain, common_certs,
"mismatched cached certs"));
scoped_refptr<ProofSource::Chain> chain2(new ProofSource::Chain(certs));
EXPECT_EQ(nullptr,
certs_cache_.GetCompressedCert(chain2, common_certs, cached_certs));
}
TEST_F(QuicCompressedCertsCacheTest, CacheMissDueToEviction) {
// Test cache returns a miss when a queried uncompressed certs was cached but
// then evicted.
vector<string> certs = {"leaf cert", "intermediate cert", "root cert"};
scoped_refptr<ProofSource::Chain> chain(new ProofSource::Chain(certs));
string common_certs = "common certs";
string cached_certs = "cached certs";
string compressed = "compressed cert";
certs_cache_.Insert(chain, common_certs, cached_certs, compressed);
// Insert another kQuicCompressedCertsCacheSize certs to evict the first
// cached cert.
for (unsigned int i = 0;
i < QuicCompressedCertsCache::kQuicCompressedCertsCacheSize; i++) {
EXPECT_EQ(certs_cache_.Size(), i + 1);
certs_cache_.Insert(chain, base::IntToString(i), "", base::IntToString(i));
}
EXPECT_EQ(certs_cache_.MaxSize(), certs_cache_.Size());
EXPECT_EQ(nullptr,
certs_cache_.GetCompressedCert(chain, common_certs, cached_certs));
}
} // namespace
} // namespace test
} // namespace net
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