[android] Add JobScheduler-based BackgroundTaskScheduler.

components/background_task_scheduler/android/junit/src/org/chromium/components/background_task_scheduler/BackgroundTaskSchedulerJobServiceTest.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.components.background_task_scheduler;
+
+import static junit.framework.TestCase.assertFalse;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import android.annotation.TargetApi;
+import android.app.job.JobInfo;
+import android.content.Context;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+
+import org.junit.runner.RunWith;
+
+import org.chromium.base.test.BaseJUnit4ClassRunner;
+import org.chromium.base.test.util.MinAndroidSdkLevel;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Tests for {@link BackgroundTaskSchedulerJobService}.
+ */
+@RunWith(BaseJUnit4ClassRunner.class)
+@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)
+@MinAndroidSdkLevel(Build.VERSION_CODES.LOLLIPOP_MR1)
+public class BackgroundTaskSchedulerJobServiceTest {
+    private static class TestBackgroundTask implements BackgroundTask {
+        @Override
+        public boolean onStartTask(
+                Context context, TaskParameters taskParameters, TaskFinishedCallback callback) {
+            return false;
+        }
+
+        @Override
+        public boolean onStopTask(Context context, TaskParameters taskParameters) {
+            return false;
+        }
+    }
+
+    @SmallTest
+    public void testOneOffTaskInfoWithWindowConversion() {
+        TaskInfo oneOffTask =
+                TaskInfo.createOneOffTask(42, TestBackgroundTask.class,

[nyquist, 2017/02/22 18:24:12]

Self-review: Use an ID specified TaskIds for all these tests. Just create a new
one for tests.

[nyquist, 2017/02/24 23:41:12]

Done.

+                                TimeUnit.MINUTES.toMillis(100), TimeUnit.MINUTES.toMillis(200))
+                        .build();
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), oneOffTask);
+        assertEquals(oneOffTask.getTaskId(), jobInfo.getId());
+        assertFalse(jobInfo.isPeriodic());
+        assertEquals(
+                oneOffTask.getOneOffInfo().getWindowStartTimeMs(), jobInfo.getMinLatencyMillis());
+        assertEquals(oneOffTask.getOneOffInfo().getWindowEndTimeMs(),
+                jobInfo.getMaxExecutionDelayMillis());
+    }
+
+    @SmallTest
+    public void testOneOffTaskInfoWithDeadlineConversion() {
+        TaskInfo oneOffTask = TaskInfo.createOneOffTask(42, TestBackgroundTask.class,
+                                              TimeUnit.MINUTES.toMillis(200))
+                                      .build();
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), oneOffTask);
+        assertEquals(oneOffTask.getTaskId(), jobInfo.getId());
+        assertFalse(jobInfo.isPeriodic());
+        assertEquals(oneOffTask.getOneOffInfo().getWindowEndTimeMs(),
+                jobInfo.getMaxExecutionDelayMillis());
+    }
+
+    @SmallTest
+    public void testPeriodicTaskInfoWithoutFlexConversion() {
+        TaskInfo periodicTask = TaskInfo.createPeriodicTask(42, TestBackgroundTask.class,
+                                                TimeUnit.MINUTES.toMillis(200))
+                                        .build();
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), periodicTask);
+        assertEquals(periodicTask.getTaskId(), jobInfo.getId());
+        assertTrue(jobInfo.isPeriodic());
+        assertEquals(periodicTask.getPeriodicInfo().getIntervalMs(), jobInfo.getIntervalMillis());
+    }
+
+    @SmallTest
+    public void testPeriodicTaskInfoWithFlexConversion() {
+        TaskInfo periodicTask =
+                TaskInfo.createPeriodicTask(42, TestBackgroundTask.class,
+                                TimeUnit.MINUTES.toMillis(200), TimeUnit.MINUTES.toMillis(50))
+                        .build();
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), periodicTask);
+        assertEquals(periodicTask.getTaskId(), jobInfo.getId());
+        assertTrue(jobInfo.isPeriodic());
+        assertEquals(periodicTask.getPeriodicInfo().getIntervalMs(), jobInfo.getIntervalMillis());
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            assertEquals(periodicTask.getPeriodicInfo().getFlexMs(), jobInfo.getFlexMillis());
+        }
+    }
+
+    @SmallTest
+    public void testTaskInfoWithExtras() {
+        Bundle taskExtras = new Bundle();
+        taskExtras.putString("foo", "bar");
+        taskExtras.putBoolean("bools", true);
+        taskExtras.putLong("longs", 1342543L);
+        TaskInfo oneOffTask = TaskInfo.createOneOffTask(42, TestBackgroundTask.class,
+                                              TimeUnit.MINUTES.toMillis(200))
+                                      .setExtras(taskExtras)
+                                      .build();
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), oneOffTask);
+        assertEquals(oneOffTask.getTaskId(), jobInfo.getId());
+        PersistableBundle jobExtras = jobInfo.getExtras();
+        PersistableBundle persistableBundle = jobExtras.getPersistableBundle(
+                BackgroundTaskSchedulerJobService.BACKGROUND_TASK_EXTRAS_KEY);
+        assertEquals(taskExtras.keySet().size(), persistableBundle.keySet().size());
+        assertEquals(taskExtras.getString("foo"), persistableBundle.getString("foo"));
+        assertEquals(taskExtras.getBoolean("bools"), persistableBundle.getBoolean("bools"));
+        assertEquals(taskExtras.getLong("longs"), persistableBundle.getLong("longs"));
+    }
+
+    @SmallTest
+    public void testTaskInfoWithManyConstraints() {
+        TaskInfo.Builder taskBuilder = TaskInfo.createOneOffTask(
+                42, TestBackgroundTask.class, TimeUnit.MINUTES.toMillis(200));
+
+        JobInfo jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(), taskBuilder.setIsPersisted(true).build());
+        assertTrue(jobInfo.isPersisted());
+
+        jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(),
+                taskBuilder.setRequiredNetworkType(TaskInfo.NETWORK_TYPE_UNMETERED).build());
+        assertEquals(JobInfo.NETWORK_TYPE_UNMETERED, jobInfo.getNetworkType());
+
+        jobInfo = BackgroundTaskSchedulerJobService.createJobInfoFromTaskInfo(
+                InstrumentationRegistry.getContext(),
+                taskBuilder.setRequiresCharging(true).build());
+        assertTrue(jobInfo.isRequireCharging());
+    }
+}