| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>AmbientLightSensor Test: start()</title> |
| <link rel="author" title="Intel" href="http://www.intel.com"> |
| <link rel="help" href="https://www.w3.org/TR/ambient-light/"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <script> |
| |
| let sensor, start_return; |
| |
| setup(() => { |
| sensor = new AmbientLightSensor(); |
| }); |
| |
| test(() => { |
| assert_equals(sensor.reading, null); |
| }, "The default sensor.reading is 'null'"); |
| |
| test(() => { |
| assert_equals(sensor.state, "idle"); |
| }, "The default sensor.state is 'idle'"); |
| |
| test(() => { |
| start_return = sensor.start(); |
| assert_equals(sensor.state, "activating"); |
| }, "The sensor.state changes to 'activating' after sensor.start()"); |
| |
| //TODO: The permission is not ready. |
| |
| test(() => { |
| assert_equals(start_return, undefined); |
| }, "the sensor.start() return undefined"); |
| |
| test(() => { |
| assert_throws("InvalidStateError", () => { sensor.start(); }, "start() twice"); |
| sensor.stop(); |
| }, "throw an InvalidStateError exception when state is neither idle nor errored"); |
| |
| |
| |
| </script> |
