Merge "Make precentage calculation round up by 0.5%"

                UserIcons.getDefaultUserIcon(user.id, /* light= */ false)).bake();

    }

    /** Formats a double from 0.0..100.0 with an option to round **/

    public static String formatPercentage(double percentage, boolean round) {

        final int localPercentage = round ? Math.round((float) percentage) : (int) percentage;

        return formatPercentage(localPercentage);

    }

    /** Formats the ratio of amount/total as a percentage. */

    public static String formatPercentage(long amount, long total) {

        return formatPercentage(((double) amount) / total);

/*

 * Copyright (C) 2017 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.settingslib;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.robolectric.annotation.Config;

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

@RunWith(SettingLibRobolectricTestRunner.class)

@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)

public class UtilsTest {

    private static final double[] TEST_PERCENTAGES = {0, 0.4, 0.5, 0.6, 49, 49.3, 49.8, 50, 100};

    private static final String PERCENTAGE_0 = "0%";

    private static final String PERCENTAGE_1 = "1%";

    private static final String PERCENTAGE_49 = "49%";

    private static final String PERCENTAGE_50 = "50%";

    private static final String PERCENTAGE_100 = "100%";

    @Test

    public void testFormatPercentage_RoundTrue_RoundUpIfPossible() {

        final String[] expectedPercentages = {PERCENTAGE_0, PERCENTAGE_0, PERCENTAGE_1,

                PERCENTAGE_1, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_50, PERCENTAGE_50,

                PERCENTAGE_100};

        for (int i = 0, size = TEST_PERCENTAGES.length; i < size; i++) {

            final String percentage = Utils.formatPercentage(TEST_PERCENTAGES[i], true);

            assertThat(percentage).isEqualTo(expectedPercentages[i]);

        }

    }

    @Test

    public void testFormatPercentage_RoundFalse_NoRound() {

        final String[] expectedPercentages = {PERCENTAGE_0, PERCENTAGE_0, PERCENTAGE_0,

                PERCENTAGE_0, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_50,

                PERCENTAGE_100};

        for (int i = 0, size = TEST_PERCENTAGES.length; i < size; i++) {

            final String percentage = Utils.formatPercentage(TEST_PERCENTAGES[i], false);

            assertThat(percentage).isEqualTo(expectedPercentages[i]);

        }

    }

}