[Sensors] Consider maximum supported frequency

device/generic_sensor/android/junit/src/org/chromium/device/sensors/PlatformSensorAndProviderTest.java

 // Copyright 2016 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.device.sensors;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.mockito.ArgumentMatchers.any;
@@ skipping 239 matching lines @@
      */
     @Test
     @Feature({"PlatformSensor"})
     public void testSensorOnChangeReportingMode() {
         PlatformSensor sensor = createPlatformSensor(50000, Sensor.TYPE_LIGHT,
                 SensorType.AMBIENT_LIGHT, Sensor.REPORTING_MODE_ON_CHANGE);
         assertEquals(ReportingMode.ON_CHANGE, sensor.getReportingMode());
     }
 
     /**
+     * Test that PlatformSensor correctly returns its maximum supported frequency.
+     */
+    @Test
+    @Feature({"PlatformSensor"})
+    public void testSensorMaximumSupportedFrequency() {
+        PlatformSensor sensor = createPlatformSensor(50000, Sensor.TYPE_LIGHT,
+                SensorType.AMBIENT_LIGHT, Sensor.REPORTING_MODE_ON_CHANGE);
+        assertEquals(20, sensor.getMaximumSupportedFrequency(), 0.001);
+
+        sensor = createPlatformSensor(
+                0, Sensor.TYPE_LIGHT, SensorType.AMBIENT_LIGHT, Sensor.REPORTING_MODE_ON_CHANGE);
+        assertEquals(
+                sensor.getDefaultConfiguration(), sensor.getMaximumSupportedFrequency(), 0.001);
+    }
+
+    /**
      * Test that shared buffer is correctly populated from SensorEvent.
      */
     @Test
     @Feature({"PlatformSensor"})
     public void testSensorReadingFromEvent() {
         TestPlatformSensor sensor = createTestPlatformSensor(
                 50000, Sensor.TYPE_LIGHT, 1, Sensor.REPORTING_MODE_ON_CHANGE);
         initPlatformSensor(sensor);
         TestPlatformSensor spySensor = spy(sensor);
         SensorEvent event = createFakeEvent(1);
@@ skipping 119 matching lines @@
             long minDelayUsec, int androidSensorType, int readingCount, int reportingMode) {
         return new TestPlatformSensor(
                 createMockSensor(minDelayUsec, androidSensorType, reportingMode), readingCount,
                 mPlatformSensorProvider);
     }
 
     private float getFakeReadingValue(int valueNum) {
         return (float) (valueNum + SECONDS_IN_NANOSECOND);
     }
 }