[Testing] Use AndroidJUnit4 instead in DataUsageInfoControllerTest

/*

 * Copyright (C) 2020 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.

 */

package com.android.settings.datausage;

import static com.google.common.truth.Truth.assertThat;

import android.net.NetworkPolicy;

import android.net.NetworkTemplate;

import androidx.test.ext.junit.runners.AndroidJUnit4;

import com.android.settingslib.net.DataUsageController.DataUsageInfo;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

public class DataUsageInfoControllerTest {

    private static final int NEGATIVE = -1;

    private static final int ZERO = 0;

    private static final int POSITIVE_SMALL = 1;

    private static final int POSITIVE_LARGE = 5;

    private DataUsageInfoController mInfoController;

    private DataUsageInfo info;

    @Before

    public void setUp()  {

        mInfoController = new DataUsageInfoController();

        info = new DataUsageInfo();

    }

    @Test

    public void getSummaryLimit_LowUsageLowWarning_LimitUsed() {

        info.warningLevel = POSITIVE_SMALL;

        info.limitLevel = POSITIVE_LARGE;

        info.usageLevel = POSITIVE_SMALL;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.limitLevel);

    }

    @Test

    public void getSummaryLimit_LowUsageEqualWarning_LimitUsed() {

        info.warningLevel = POSITIVE_LARGE;

        info.limitLevel = POSITIVE_LARGE;

        info.usageLevel = POSITIVE_SMALL;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.limitLevel);

    }

    @Test

    public void getSummaryLimit_NoLimitNoUsage_WarningUsed() {

        info.warningLevel = POSITIVE_LARGE;

        info.limitLevel = ZERO;

        info.usageLevel = ZERO;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.warningLevel);

    }

    @Test

    public void getSummaryLimit_NoLimitLowUsage_WarningUsed() {

        info.warningLevel = POSITIVE_LARGE;

        info.limitLevel = ZERO;

        info.usageLevel = POSITIVE_SMALL;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.warningLevel);

    }

    @Test

    public void getSummaryLimit_LowWarningNoLimit_UsageUsed() {

        info.warningLevel = POSITIVE_SMALL;

        info.limitLevel = ZERO;

        info.usageLevel = POSITIVE_LARGE;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.usageLevel);

    }

    @Test

    public void getSummaryLimit_LowWarningLowLimit_UsageUsed() {

        info.warningLevel = POSITIVE_SMALL;

        info.limitLevel = POSITIVE_SMALL;

        info.usageLevel = POSITIVE_LARGE;

        assertThat(mInfoController.getSummaryLimit(info)).isEqualTo(info.usageLevel);

    }

    private NetworkPolicy getDefaultNetworkPolicy() {

        NetworkTemplate template =

            new NetworkTemplate(NetworkTemplate.MATCH_WIFI_WILDCARD, null, null);

        int cycleDay  = -1;

        String cycleTimezone = "UTC";

        long warningBytes = -1;

        long limitBytes = -1;

        return new NetworkPolicy(template, cycleDay, cycleTimezone, warningBytes, limitBytes, true);

    }

    @Test

    public void updateDataLimit_NullArguments_NoError() {

        mInfoController.updateDataLimit(null, null);

        mInfoController.updateDataLimit(info, null);

        mInfoController.updateDataLimit(null, getDefaultNetworkPolicy());

    }

    @Test

    public void updateDataLimit_NegativeWarning_UpdatedToZero() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.warningBytes = NEGATIVE;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.warningLevel).isEqualTo(ZERO);

    }

    @Test

    public void updateDataLimit_WarningZero_UpdatedToZero() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.warningBytes = ZERO;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.warningLevel).isEqualTo(ZERO);

    }

    @Test

    public void updateDataLimit_WarningPositive_UpdatedToWarning() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.warningBytes = POSITIVE_SMALL;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.warningLevel).isEqualTo(policy.warningBytes);

    }

    @Test

    public void updateDataLimit_LimitNegative_UpdatedToZero() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.limitBytes = NEGATIVE;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.limitLevel).isEqualTo(ZERO);

    }

    @Test

    public void updateDataLimit_LimitZero_UpdatedToZero() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.limitBytes = ZERO;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.limitLevel).isEqualTo(ZERO);

    }

    @Test

    public void updateDataLimit_LimitPositive_UpdatedToLimit() {

        NetworkPolicy policy = getDefaultNetworkPolicy();

        policy.limitBytes = POSITIVE_SMALL;

        mInfoController.updateDataLimit(info, policy);

        assertThat(info.limitLevel).isEqualTo(policy.limitBytes);

    }

}

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