103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
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* Copyright (C) 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 <android-base/stringprintf.h>
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#include <gtest/gtest.h>
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#include <trusty/coverage/coverage.h>
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#include <trusty/tipc.h>
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#include <array>
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#include <memory>
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using android::base::unique_fd;
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using std::array;
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using std::make_unique;
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using std::unique_ptr;
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#define TIPC_DEV "/dev/trusty-ipc-dev0"
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#define TEST_SRV_PORT "com.android.trusty.sancov.test.srv"
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#define TEST_SRV_MODULE "srv.syms.elf"
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namespace android {
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namespace trusty {
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namespace coverage {
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/* Test server's UUID is 77f68803-c514-43ba-bdce-3254531c3d24 */
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static struct uuid test_srv_uuid = {
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0x77f68803,
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0xc514,
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0x43ba,
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{0xbd, 0xce, 0x32, 0x54, 0x53, 0x1c, 0x3d, 0x24},
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};
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class CoverageTest : public ::testing::Test {
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public:
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void SetUp() override {
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record_ = make_unique<CoverageRecord>(TIPC_DEV, &test_srv_uuid);
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auto ret = record_->Open();
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ASSERT_TRUE(ret.ok()) << ret.error();
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}
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void TearDown() override { record_.reset(); }
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unique_ptr<CoverageRecord> record_;
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};
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TEST_F(CoverageTest, CoverageReset) {
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record_->ResetFullRecord();
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auto counter = record_->TotalEdgeCounts();
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ASSERT_EQ(counter, 0);
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}
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TEST_F(CoverageTest, TestServerCoverage) {
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unique_fd test_srv(tipc_connect(TIPC_DEV, TEST_SRV_PORT));
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ASSERT_GE(test_srv, 0);
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uint32_t mask = (uint32_t)-1;
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uint32_t magic = 0xdeadbeef;
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uint64_t high_watermark = 0;
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for (size_t i = 1; i < sizeof(magic) * 8; i++) {
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/* Reset coverage */
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record_->ResetCounts();
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/* Send message to test server */
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uint32_t msg = magic & ~(mask << i);
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int rc = write(test_srv, &msg, sizeof(msg));
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ASSERT_EQ(rc, sizeof(msg));
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/* Read message from test server */
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rc = read(test_srv, &msg, sizeof(msg));
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ASSERT_EQ(rc, sizeof(msg));
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/* Count number of non-unique blocks executed */
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auto counter = record_->TotalEdgeCounts();
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/* Each consecutive input should exercise more or same blocks */
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ASSERT_GE(counter, high_watermark);
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high_watermark = counter;
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auto sancov_filename = android::base::StringPrintf(
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"/data/local/tmp/" TEST_SRV_MODULE ".%d.sancov", getpid());
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auto res = record_->SaveSancovFile(sancov_filename);
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ASSERT_TRUE(res.ok());
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}
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ASSERT_GT(high_watermark, 0);
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}
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} // namespace coverage
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} // namespace trusty
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} // namespace android
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