robotests/src/com/android/storagemanager/deletionhelper/DownloadsFilePreferenceTest.java

/*
 * 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.storagemanager.deletionhelper;

import android.content.Context;
import android.text.format.DateUtils;
import com.android.storagemanager.utils.IconProvider;
import java.io.File;
import java.io.FileWriter;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.RuntimeEnvironment;

import static com.google.common.truth.Truth.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

@RunWith(RobolectricTestRunner.class)
public class DownloadsFilePreferenceTest {

    //23-01-2100
    private static final long TEST_FILE_TIME = 4104374400000L;

    private String mReadableDate;
    private Context mContext;
    @Mock private IconProvider mIconProvider;
    @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
    private File mTempDir;

    @Before
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks(this);
        mContext = RuntimeEnvironment.application;
        mReadableDate =
                DateUtils.formatDateTime(mContext, TEST_FILE_TIME, DateUtils.FORMAT_SHOW_DATE);
        mTempDir = temporaryFolder.newFolder();
    }

    @Test
    public void testSizeSummary() {
        // Initialize the entry.
        File file = mock(File.class);
        when(file.getName()).thenReturn("FakeFile");
        when(file.lastModified()).thenReturn(TEST_FILE_TIME);
        when(file.length()).thenReturn(100L);
        when(mIconProvider.loadMimeIcon(any())).thenReturn(null);

        DownloadsFilePreference preference =
                new DownloadsFilePreference(mContext, file, mIconProvider);

        assertThat(preference.getTitle()).isEqualTo("FakeFile");
        assertThat(preference.getSummary().toString()).isEqualTo(mReadableDate);
        assertThat(preference.getItemSize()).isEqualTo("100 B");
    }

    @Test
    public void compareTo_biggerFileSortsAhead() throws Exception {
        File file = new File(mTempDir, "test.bmp");
        DownloadsFilePreference preference =
                new DownloadsFilePreference(mContext, file, mIconProvider);
        File otherFile = new File(mTempDir, "test.txt");
        FileWriter fileWriter = new FileWriter(otherFile);
        fileWriter.write("test");
        fileWriter.close();
        DownloadsFilePreference otherPreference =
                new DownloadsFilePreference(mContext, otherFile, mIconProvider);

        assertThat(preference.compareTo(otherPreference)).isGreaterThan(0);
    }

    @Test
    public void compareTo_fallbackToFileName() {
        File file = new File(mTempDir, "test.bmp");
        DownloadsFilePreference preference =
                new DownloadsFilePreference(mContext, file, mIconProvider);
        File otherFile = new File(mTempDir, "test.txt");
        DownloadsFilePreference otherPreference =
                new DownloadsFilePreference(mContext, otherFile, mIconProvider);

        // In Preference terms, less than 0 means sorts ahead on the list (i.e. higher up).
        // We would expect test.bmp to sort ahead of test.txt due to the lexicographical sorting.
        assertThat(preference.compareTo(otherPreference)).isLessThan(0);
    }
}