### Question:
AwsRDSPlatform extends Platform { public boolean isInstanceSnapshotRunning (String dbInstanceIdentifier) { log.debug("Evaluating if {} is backing up", kv(AWS_RDS_INSTANCE_DATADOG_IDENTIFIER, dbInstanceIdentifier)); boolean snapshotRunning = amazonRDS.describeDBInstances(new DescribeDBInstancesRequest().withDBInstanceIdentifier(dbInstanceIdentifier)) .getDBInstances() .stream() .anyMatch(dbInstance -> dbInstance.getDBInstanceStatus().equals(AWS_RDS_BACKING_UP)); log.info("{} is backing up = {}", kv(AWS_RDS_INSTANCE_DATADOG_IDENTIFIER, dbInstanceIdentifier), v("backupInProgress", snapshotRunning)); return snapshotRunning; } @Autowired  AwsRDSPlatform();   AwsRDSPlatform(AmazonRDS amazonRDS, AmazonEC2 amazonEC2); Map<String, String> getVpcToSecurityGroupMap(); @Override ApiStatus getApiStatus(); @Override PlatformLevel getPlatformLevel(); @Override PlatformHealth getPlatformHealth(); @Override List<Container> generateExperimentRoster(); @Override boolean isContainerRecycled(Container container); Map<String, String> getFilter(); void setFilter(Map<String, String> filter); void failoverCluster(String dbClusterIdentifier); void restartInstance(String... dbInstanceIdentifiers); Set<String> getClusterInstances(String dbClusterIdentifier); ContainerHealth getInstanceStatus(String... dbInstanceIdentifiers); void setVpcSecurityGroupIds(String dbInstanceIdentifier, String vpcSecurityGroupId); void setVpcSecurityGroupIds(String dbInstanceIdentifier, Collection<String> vpcSecurityGroupIds); ContainerHealth checkVpcSecurityGroupIds(String dbInstanceIdentifier, Collection<String> vpcSecurityGroupIds); Collection<String> getVpcSecurityGroupIds(String dbInstanceIdentifier); String getChaosSecurityGroup(String dbInstanceIdentifier); DBSnapshot snapshotDBInstance(String dbInstanceIdentifier); DBClusterSnapshot snapshotDBCluster(String dbClusterIdentifier); void deleteInstanceSnapshot(DBSnapshot dbSnapshot); void deleteClusterSnapshot(DBClusterSnapshot dbClusterSnapshot); boolean isInstanceSnapshotRunning(String dbInstanceIdentifier); boolean isClusterSnapshotRunning(String dbClusterIdentifier);  }### Answer:
@Test public void isInstanceSnapshotRunning () { String dbInstanceIdentifier = randomUUID().toString(); DBInstance backingUpInstance = new DBInstance().withDBInstanceStatus(AWS_RDS_BACKING_UP).withDBInstanceIdentifier(dbInstanceIdentifier); DBInstance normalInstance = new DBInstance().withDBInstanceStatus(AWS_RDS_AVAILABLE); DescribeDBInstancesRequest describeDBInstancesRequest = new DescribeDBInstancesRequest().withDBInstanceIdentifier(dbInstanceIdentifier); DescribeDBInstancesResult describeDBInstancesResult1 = new DescribeDBInstancesResult().withDBInstances(backingUpInstance); DescribeDBInstancesResult describeDBInstancesResult2 = new DescribeDBInstancesResult().withDBInstances(backingUpInstance, normalInstance); DescribeDBInstancesResult describeDBInstancesResult3 = new DescribeDBInstancesResult().withDBInstances(normalInstance .withDBInstanceIdentifier(dbInstanceIdentifier)); doReturn(describeDBInstancesResult1, describeDBInstancesResult2, describeDBInstancesResult3).when(amazonRDS).describeDBInstances(describeDBInstancesRequest); assertTrue("Exactly one instance backing up should return true", awsRDSPlatform.isInstanceSnapshotRunning(dbInstanceIdentifier)); assertTrue("Any instance backing up should return true", awsRDSPlatform.isInstanceSnapshotRunning(dbInstanceIdentifier)); assertFalse("No instances backing up should return false", awsRDSPlatform.isInstanceSnapshotRunning(dbInstanceIdentifier)); }