DeviceJUnit4ClassRunner.TestMetrics

public static class DeviceJUnit4ClassRunner.TestMetrics
extends ExternalResource

java.lang.Object
↳	org.junit.rules.ExternalResource
	↳	com.android.tradefed.testtype.DeviceJUnit4ClassRunner.TestMetrics

Implementation of ExternalResource and TestRule. This rule allows to log metrics during a test case (inside @Test). It guarantees that the metrics map is cleaned between tests, so the same rule object can be re-used.

Example:
 @Rule
 public TestMetrics metrics = new TestMetrics();

 @Test
 public void testFoo() {
     metrics.addTestMetric("key", "value");
     metrics.addTestMetric("key2", "value2");
 }

 @Test
 public void testFoo2() {
     metrics.addTestMetric("key3", "value3");
 }

Summary

Public constructors
`TestMetrics()`

Public methods
`void`	`addTestMetric(String key, MetricMeasurement.Metric metric)` Log a metric entry in proto format for the test case.
`void`	`addTestMetric(String key, String value)` Log a metric entry for the test case.
`Statement`	`apply(Statement base, Description description)`

Protected methods
`void`	`after()`
`void`	`before()`

Public constructors

TestMetrics

public TestMetrics ()

Public methods

addTestMetric

public void addTestMetric (String key, 
                MetricMeasurement.Metric metric)

Log a metric entry in proto format for the test case. Each key within a test case must be unique otherwise it will override the previous value.

Parameters
`key`	`String`: The key of the metric.
`metric`	`MetricMeasurement.Metric`: The value associated to the key.

addTestMetric

public void addTestMetric (String key, 
                String value)

Log a metric entry for the test case. Each key within a test case must be unique otherwise it will override the previous value.

Parameters
`key`	`String`: The key of the metric.
`value`	`String`: The value associated to the key.

apply

public Statement apply (Statement base, 
                Description description)

Parameters
`base`	`Statement`
`description`	`Description`

Returns
`Statement`

Protected methods

after

protected void after ()

before

protected void before ()