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Source:Java Reporting Framework - Export to Excel, PDF and mail them
public final class RetryRule<A extends Activity> implements TestRule {
private final int retryCount;
private final Class<A> activityClazz;
private ActivityScenario<A> scenario;
/**
* @param retryCount the number of retries. retryCount = 1 means 1 (normal) try and then
* 1 retry, i.e. 2 tries overall
*/
public RetryRule(int retryCount, @NonNull Class<A> clazz) {
this.retryCount = retryCount;
this.activityClazz = clazz;
}
public Statement apply(Statement base, Description description) {
return statement(base, description);
}
private Statement statement(final Statement base, final Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
Throwable caughtThrowable = null;
// implement retry logic here
for (int i = 0; i <= retryCount; i++) {
try(ActivityScenario<A> scenario = ActivityScenario.launch(activityClazz)){
RetryRule.this.scenario = scenario;
base.evaluate();
return;
} catch (Throwable t) {
caughtThrowable = t;
Log.e(LOGTAG,
description.getDisplayName() + ": run " + (i + 1) + " failed: ", t);
}
}
Log.e(LOGTAG,
description.getDisplayName() + ": giving up after " + (retryCount + 1) +
" failures");
throw Objects.requireNonNull(caughtThrowable);
}
};
}
public ActivityScenario<A> getScenario() {
return scenario;
}
}
