实际上我以前简单说明过dremio 的一些测试类以及如何进行测试一般我们使用BaseTestQuery 就可以了
实际上对于测试dremio 包装了一个SabotNode 类，提供了不带ui 的测试框架能力(server 引擎能力)
SabotNode 提供的能力
SabotNode 是一个dremio 运行依赖的基本组件的包装，了解dremioSabotNode 依赖的组件之后可以更好的学习 dremio 
基本测试使用BaseTestQuery 类
- 测试类
@BeforeClass
public static void setupDefaultTestCluster() throws Exception {
config = SabotConfig.create(TEST_CONFIGURATIONS);
Module module = Optional.ofNullable(SABOT_NODE_RULE.module)
.map(m -> Modules.combine(m, getDefaultModule())).orElse(getDefaultModule());
SABOT_NODE_RULE.register(module);
openClient();
localFs = HadoopFileSystem.getLocal(new Configuration());
// turns on the verbose errors in tests
// sever side stacktraces are added to the message before sending back to the client
setSessionOption(ExecConstants.ENABLE_VERBOSE_ERRORS_KEY, "true");
}
openClient 创建SabotNode
protected static void openClient() throws Exception {
clusterCoordinator = LocalClusterCoordinator.newRunningCoordinator();
dfsTestTmpSchemaLocation = TestUtilities.createTempDir();
nodes = new SabotNode[nodeCount];
for(int i = 0; i < nodeCount; i++) {
// first node has all roles, and all others are only executors
nodes[i] = SABOT_NODE_RULE.newSabotNode(new SabotProviderConfig(i == 0));
nodes[i].run();
if(i == 0) {
TestUtilities.addDefaultTestPlugins(nodes[i].getContext().getCatalogService(), dfsTestTmpSchemaLocation, true);
}
}
client = QueryTestUtil.createClient(config, clusterCoordinator, MAX_WIDTH_PER_NODE, defaultProperties);
// turn off re-attempts, this needs to be set at the system level as many unit test will
// reset the user session by restarting the client
setEnableReAttempts(false);
}
SabotModule 模块能力
SabotModule 属于一个guice 的标准模块，包含了依赖的模块，可以了解依赖的组件 
测试参考使用
实际上官方测试案例代码还是比较全的，可以了解测试的使用，同时dremio 对于测试包也发布了maven 私服可以方便使用
比如简单source 扩展的测试（执行sql 操作的）
public class MyPluginTest extends BaseTestQuery {
private CrateConf crateConf;
@Before
public void initSource(){
getSabotContext().getOptionManager().setOption(OptionValue.createLong(OptionValue.OptionType.SYSTEM, ExecConstants.ELASTIC_ACTION_RETRIES, 3));
SourceConfig sc = new SourceConfig();
sc.setName("cratedb");
crateConf = new CrateConf();
crateConf.host="127.0.0.1";
crateConf.port=5433;
crateConf.username="crate";
sc.setConnectionConf(crateConf);
sc.setMetadataPolicy(CatalogService.DEFAULT_METADATA_POLICY);
getSabotContext().getCatalogService().createSourceIfMissingWithThrow(sc);
}
@Test
public void test() throws Exception {
String query = "select * from cratedb.doc.demoapp";
TestResult testResult= testBuilder()
.sqlQuery(query)
.unOrdered()
.baselineColumns("id", "name")
.baselineValues(null, null)
.go();
}
}
说明
dremio 组件比较多，代码量也不少，直接通过源码学习不是很好，了解测试类还是比较重要的，可以了解dremio 的运行机制，同时加速功能测试
参考资料
https://www.cnblogs.com/rongfengliang/p/14642625.html
https://www.cnblogs.com/rongfengliang/p/15966269.html
https://www.cnblogs.com/rongfengliang/p/15851639.html
https://github.com/dremio/dremio-oss/blob/d41cb52143b6b0289fc8ed4d970bfcf410a669e8/sabot/kernel/src/test/java/com/dremio/BaseTestQuery.java
https://github.com/dremio/dremio-oss/blob/d41cb52143b6b0289fc8ed4d970bfcf410a669e8/sabot/kernel/src/main/java/com/dremio/exec/ExecConstants.java
https://github.com/dremio/dremio-oss/blob/d41cb52143b6b0289fc8ed4d970bfcf410a669e8/sabot/kernel/src/test/java/com/dremio/exec/server/SabotNode.java