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/*

* Copyright OpenSearch Contributors

* SPDX-License-Identifier: Apache-2.0

*/

package org.opensearch.sql.sql;

import static org.junit.jupiter.api.Assertions.assertNotNull;

import static org.junit.jupiter.api.Assertions.fail;

import static org.mockito.ArgumentMatchers.any;

import static org.mockito.Mockito.doAnswer;

import static org.opensearch.sql.executor.ExecutionEngine.QueryResponse;

import java.util.Map;

import java.util.concurrent.TimeUnit;

import org.json.JSONObject;

import org.junit.jupiter.api.AfterEach;

import org.junit.jupiter.api.BeforeEach;

import org.junit.jupiter.api.DisplayNameGeneration;

import org.junit.jupiter.api.DisplayNameGenerator;

import org.junit.jupiter.api.Test;

import org.junit.jupiter.api.extension.ExtendWith;

import org.mockito.Mock;

import org.mockito.junit.jupiter.MockitoExtension;

import org.opensearch.sql.common.response.ResponseListener;

import org.opensearch.sql.executor.DefaultQueryManager;

import org.opensearch.sql.executor.ExecutionEngine.ExplainResponse;

import org.opensearch.sql.executor.ExecutionEngine.ExplainResponseNode;

import org.opensearch.sql.executor.QueryService;

import org.opensearch.sql.executor.execution.QueryPlanFactory;

import org.opensearch.sql.sql.antlr.SQLSyntaxParser;

import org.opensearch.sql.sql.domain.SQLQueryRequest;

@ExtendWith(MockitoExtension.class)

@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)

class SQLServiceTest {

private static final String QUERY = "/_plugins/_sql";

private static final String EXPLAIN = "/_plugins/_sql/_explain";

private SQLService sqlService;

private DefaultQueryManager queryManager;

@Mock private QueryService queryService;

@BeforeEach

public void setUp() {

queryManager = DefaultQueryManager.defaultQueryManager();

sqlService =

new SQLService(new SQLSyntaxParser(), queryManager, new QueryPlanFactory(queryService));

}

@AfterEach

public void cleanup() throws InterruptedException {

queryManager.awaitTermination(1, TimeUnit.SECONDS);

}

private ResponseListener<QueryResponse> getQueryListener(boolean fail) {

return new ResponseListener<QueryResponse>() {

@Override

public void onResponse(QueryResponse response) {

if (fail) {

fail();

} else {

assertNotNull(response);

}

}

@Override

public void onFailure(Exception e) {

if (!fail) {

fail(e);

} else {

assertNotNull(e);

}

}

};

}

private ResponseListener<ExplainResponse> getExplainListener(boolean fail) {

return new ResponseListener<ExplainResponse>() {

@Override

public void onResponse(ExplainResponse response) {

if (fail) {

fail();

} else {

assertNotNull(response);

}

}

@Override

public void onFailure(Exception e) {

if (!fail) {

fail(e);

}

}

};

}

@Test

public void can_execute_sql_query() {

sqlService.execute(

new SQLQueryRequest(new JSONObject(), "SELECT 123", QUERY, "jdbc"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_execute_cursor_query() {

sqlService.execute(

new SQLQueryRequest(new JSONObject(), null, QUERY, Map.of("format", "jdbc"), "n:cursor"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_execute_close_cursor_query() {

sqlService.execute(

new SQLQueryRequest(

new JSONObject(), null, QUERY + "/close", Map.of("format", "jdbc"), "n:cursor"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_execute_csv_format_request() {

sqlService.execute(

new SQLQueryRequest(new JSONObject(), "SELECT 123", QUERY, "csv"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_execute_raw_format_request() {

sqlService.execute(

new SQLQueryRequest(new JSONObject(), "SELECT 123", QUERY, "raw"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_execute_pretty_raw_format_request() {

sqlService.execute(

new SQLQueryRequest(

new JSONObject(),

"SELECT 123",

QUERY,

Map.of("format", "jdbc", "pretty", "true"),

"n:cursor"),

getQueryListener(false),

getExplainListener(false));

}

@Test

public void can_explain_sql_query() {

doAnswer(

invocation -> {

ResponseListener<ExplainResponse> listener = invocation.getArgument(1);

listener.onResponse(new ExplainResponse(new ExplainResponseNode("Test")));

return null;

})

.when(queryService)

.explain(any(), any(), any(), any());

sqlService.explain(

new SQLQueryRequest(new JSONObject(), "SELECT 123", EXPLAIN, "csv"),

getExplainListener(false));

}

@Test

public void cannot_explain_cursor_query() {

sqlService.explain(

new SQLQueryRequest(new JSONObject(), null, EXPLAIN, Map.of("format", "jdbc"), "n:cursor"),

getExplainListener(true));

}

@Test

public void can_capture_error_during_execution() {

sqlService.execute(

new SQLQueryRequest(new JSONObject(), "SELECT", QUERY, ""),

getQueryListener(true),

getExplainListener(false));

}

@Test

public void can_capture_error_during_explain() {

sqlService.explain(

new SQLQueryRequest(new JSONObject(), "SELECT", EXPLAIN, ""), getExplainListener(true));

}

}