offline_items_collection : Added helper class to determine progress

chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadUtilsTest.java

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.download;
 
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.SmallTest;
 
 import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import org.chromium.base.test.util.Feature;
 import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
+import org.chromium.components.offline_items_collection.OfflineItem.Progress;
+import org.chromium.components.offline_items_collection.OfflineItemProgressUnit;
 
 /**
  * Tests of {@link DownloadUtils}.
  */
 @RunWith(ChromeJUnit4ClassRunner.class)
 public class DownloadUtilsTest {
+    private static final int MILLIS_PER_SECOND = 1000;
+
     /**
      * Test {@link DownloadUtils#getAbbrieviatedFileName()} method.
      */
     @Test
     @SmallTest
     @Feature({"Download"})
     public void testGetAbbrieviatedFileName() {
         Assert.assertEquals("123.pdf", DownloadUtils.getAbbreviatedFileName("123.pdf", 10));
         Assert.assertEquals(
                 "1" + DownloadUtils.ELLIPSIS, DownloadUtils.getAbbreviatedFileName("123.pdf", 1));
         Assert.assertEquals(
                 "12" + DownloadUtils.ELLIPSIS, DownloadUtils.getAbbreviatedFileName("1234567", 2));
         Assert.assertEquals("123" + DownloadUtils.ELLIPSIS + ".pdf",
                 DownloadUtils.getAbbreviatedFileName("1234567.pdf", 7));
     }
+
+    @Test
+    @SmallTest
+    @Feature({"Download"})
+    public void testFormatRemainingTime() {
+        final Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        Assert.assertEquals("0 secs left", DownloadUtils.formatRemainingTime(context, 0));
+        Assert.assertEquals(
+                "1 sec left", DownloadUtils.formatRemainingTime(context, MILLIS_PER_SECOND));
+        Assert.assertEquals("1 min left",
+                DownloadUtils.formatRemainingTime(
+                        context, DownloadUtils.SECONDS_PER_MINUTE * MILLIS_PER_SECOND));
+        Assert.assertEquals(
+                "2 mins left", DownloadUtils.formatRemainingTime(context, 149 * MILLIS_PER_SECOND));
+        Assert.assertEquals(
+                "3 mins left", DownloadUtils.formatRemainingTime(context, 150 * MILLIS_PER_SECOND));
+        Assert.assertEquals("1 hour left",
+                DownloadUtils.formatRemainingTime(
+                        context, DownloadUtils.SECONDS_PER_HOUR * MILLIS_PER_SECOND));
+        Assert.assertEquals("2 hours left",
+                DownloadUtils.formatRemainingTime(
+                        context, 149 * DownloadUtils.SECONDS_PER_MINUTE * MILLIS_PER_SECOND));
+        Assert.assertEquals("3 hours left",
+                DownloadUtils.formatRemainingTime(
+                        context, 150 * DownloadUtils.SECONDS_PER_MINUTE * MILLIS_PER_SECOND));
+        Assert.assertEquals("1 day left",
+                DownloadUtils.formatRemainingTime(
+                        context, DownloadUtils.SECONDS_PER_DAY * MILLIS_PER_SECOND));
+        Assert.assertEquals("2 days left",
+                DownloadUtils.formatRemainingTime(
+                        context, 59 * DownloadUtils.SECONDS_PER_HOUR * MILLIS_PER_SECOND));
+        Assert.assertEquals("3 days left",
+                DownloadUtils.formatRemainingTime(
+                        context, 60 * DownloadUtils.SECONDS_PER_HOUR * MILLIS_PER_SECOND));
+    }
+
+    @Test
+    @SmallTest
+    @Feature({"Download"})
+    public void testFormatBytesReceived() {
+        final Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        Assert.assertEquals("Downloaded 0.0 KB",
+                DownloadUtils.getStringForBytes(
+                        context, DownloadUtils.BYTES_DOWNLOADED_STRINGS, 0));
+        Assert.assertEquals("Downloaded 0.5 KB",
+                DownloadUtils.getStringForBytes(
+                        context, DownloadUtils.BYTES_DOWNLOADED_STRINGS, 512));
+        Assert.assertEquals("Downloaded 1.0 KB",
+                DownloadUtils.getStringForBytes(
+                        context, DownloadUtils.BYTES_DOWNLOADED_STRINGS, 1024));
+        Assert.assertEquals("Downloaded 1.0 MB",
+                DownloadUtils.getStringForBytes(
+                        context, DownloadUtils.BYTES_DOWNLOADED_STRINGS, 1024 * 1024));
+        Assert.assertEquals("Downloaded 1.0 GB",
+                DownloadUtils.getStringForBytes(
+                        context, DownloadUtils.BYTES_DOWNLOADED_STRINGS, 1024 * 1024 * 1024));
+    }
+
+    @Test
+    @SmallTest
+    @Feature({"Download"})
+    public void testFormatRemainingFiles() {
+        final Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        Progress progress = new Progress(3, Long.valueOf(5), OfflineItemProgressUnit.FILES);
+        Assert.assertEquals(60, progress.getPercentage());
+        Assert.assertEquals("2 files left", DownloadUtils.formatRemainingFiles(context, progress));
+        progress = new Progress(4, Long.valueOf(5), OfflineItemProgressUnit.FILES);
+        Assert.assertEquals(80, progress.getPercentage());
+        Assert.assertEquals("1 file left", DownloadUtils.formatRemainingFiles(context, progress));
+        progress = new Progress(5, Long.valueOf(5), OfflineItemProgressUnit.FILES);
+        Assert.assertEquals(100, progress.getPercentage());
+        Assert.assertEquals("0 files left", DownloadUtils.formatRemainingFiles(context, progress));
+    }
 }