SurfaceFlinger: add unit test for AllowedDisplayConfigs

/*

 * Copyright 2019 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.

 */

#undef LOG_TAG

#define LOG_TAG "LibSurfaceFlingerUnittests"

#define LOG_NDEBUG 0

#include <memory>

#include <vector>

#include <gtest/gtest.h>

#include <log/log.h>

#include "AllowedDisplayConfigs.h"

namespace android {

namespace {

class AllowedDisplayConfigsTest : public testing::Test {

protected:

    AllowedDisplayConfigsTest();

    ~AllowedDisplayConfigsTest() override;

    void buildAllowedConfigs();

    const std::vector<int32_t> expectedConfigs = {0, 2, 7, 129};

    constexpr static int32_t notAllowedConfig = 5;

    std::unique_ptr<const AllowedDisplayConfigs> mAllowedConfigs;

};

AllowedDisplayConfigsTest::AllowedDisplayConfigsTest() {

    const ::testing::TestInfo* const test_info =

            ::testing::UnitTest::GetInstance()->current_test_info();

    ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());

}

AllowedDisplayConfigsTest::~AllowedDisplayConfigsTest() {

    const ::testing::TestInfo* const test_info =

            ::testing::UnitTest::GetInstance()->current_test_info();

    ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());

}

void AllowedDisplayConfigsTest::buildAllowedConfigs() {

    AllowedDisplayConfigs::Builder builder;

    for (int config : expectedConfigs) {

        builder.addConfig(config);

    }

    mAllowedConfigs = builder.build();

}

/* ------------------------------------------------------------------------

 * Test cases

 */

TEST_F(AllowedDisplayConfigsTest, checkConfigs) {

    buildAllowedConfigs();

    // Check that all expected configs are allowed

    for (int config : expectedConfigs) {

        EXPECT_TRUE(mAllowedConfigs->isConfigAllowed(config));

    }

    // Check that all the allowed configs are expected

    std::vector<int32_t> allowedConfigVector;

    mAllowedConfigs->getAllowedConfigs(&allowedConfigVector);

    EXPECT_EQ(allowedConfigVector, expectedConfigs);

    // Check that notAllowedConfig is indeed not allowed

    EXPECT_TRUE(std::find(expectedConfigs.begin(), expectedConfigs.end(), notAllowedConfig) ==

                expectedConfigs.end());

    EXPECT_FALSE(mAllowedConfigs->isConfigAllowed(notAllowedConfig));

}

TEST_F(AllowedDisplayConfigsTest, getAllowedConfigsNullptr) {

    buildAllowedConfigs();

    // No other expectations rather than no crash

    mAllowedConfigs->getAllowedConfigs(nullptr);

}

} // namespace

} // namespace android

    srcs: [

        ":libsurfaceflinger_sources",

        "libsurfaceflinger_unittest_main.cpp",

        "AllowedDisplayConfigsTest.cpp",

        "CompositionTest.cpp",

        "DisplayIdentificationTest.cpp",

        "DisplayTransactionTest.cpp",