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Add test cases for Scatter Gather mediator
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@SanojPunchihewa
SanojPunchihewa committed Dec 16, 2024
1 parent 2d8d4fe commit 8fe1788
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231 changes: 231 additions & 0 deletions ...-mediator-1/src/test/java/org/wso2/carbon/esb/mediator/test/v2/ScatterGatherTestCase.java
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/*
* Copyright (c) 2024, WSO2 LLC. (https://www.wso2.com) All Rights Reserved.
*
* WSO2 LLC. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.wso2.carbon.esb.mediator.test.v2;

import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import org.apache.http.HttpResponse;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import org.w3c.dom.Document;
import org.wso2.esb.integration.common.utils.CarbonLogReader;
import org.wso2.esb.integration.common.utils.ESBIntegrationTest;
import org.wso2.esb.integration.common.utils.clients.SimpleHttpClient;
import org.xml.sax.SAXException;

import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import static org.testng.Assert.assertEquals;

public class ScatterGatherTestCase extends ESBIntegrationTest {

SimpleHttpClient httpClient = new SimpleHttpClient();

@BeforeClass(alwaysRun = true)
public void init() throws Exception {

super.init();
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator with JSON body replace")
public void testScatterGatherJSONBodyReplace() throws IOException {

String expectedResponse = "[\n" +
" {\n" +
" \"name\":\"pet1\",\n" +
" \"type\":\"dog\",\n" +
" \"requestId\":1114567\n" +
" },\n" +
" {\n" +
" \"name\":\"pet2\",\n" +
" \"type\":\"cat\",\n" +
" \"requestId\":1114567\n" +
" },\n" +
" {\n" +
" \"name\":\"pet3\",\n" +
" \"type\":\"mock-backend\",\n" +
" \"requestId\":1114567\n" +
" }\n" +
"]";

String requestPayload = "{\n" +
" \"requestId\": 1114567\n" +
"}";

String serviceURL = getMainSequenceURL() + "scatter-gather/json-body-replace";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/json");
String responsePayload = httpClient.getResponsePayload(httpResponse);

JsonElement responseJSON = JsonParser.parseString(responsePayload);
JsonElement expectedJSON = JsonParser.parseString(expectedResponse);
assertEquals(responseJSON, expectedJSON, "Response payload mismatched");
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator with JSON and variable output")
public void testScatterGatherJSONVariableOutput() throws IOException, InterruptedException {

CarbonLogReader carbonLogReader = new CarbonLogReader();
carbonLogReader.start();

String requestPayload = "{\n" +
" \"requestId\": 1114567\n" +
"}";

String serviceURL = getMainSequenceURL() + "scatter-gather/json-variable-output";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/json");
String responsePayload = httpClient.getResponsePayload(httpResponse);

JsonElement responseJSON = JsonParser.parseString(responsePayload);
JsonElement expectedJSON = JsonParser.parseString(requestPayload);
assertEquals(responseJSON, expectedJSON, "Response payload mismatched");

boolean logFound = carbonLogReader
.checkForLog("Scatter Gather output = [{\"name\":\"pet1\",\"type\":\"dog\",\"requestId\":1114567}," +
"{\"name\":\"pet2\",\"type\":\"cat\",\"requestId\":1114567},{\"name\":\"pet3\",\"type\":\"mock-backend\"," +
"\"requestId\":1114567}]", DEFAULT_TIMEOUT);
Assert.assertTrue(logFound, "Scatter Gather result not set to variable");
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator with XML body replace")
public void testScatterGatherXMLBodyReplace() throws IOException, ParserConfigurationException, SAXException {

String expectedResponse = "<scatter_response><pet><name>pet1</name><type>cat</type><requestId>78658</requestId>" +
"</pet><pet><name>pet2</name><type>mock-backend</type><requestId>78658</requestId></pet></scatter_response>";

String requestPayload = "<root>\n" +
" <requestId>78658</requestId>\n" +
"</root>";

String serviceURL = getMainSequenceURL() + "scatter-gather/xml-body-replace";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/xml");
String responsePayload = httpClient.getResponsePayload(httpResponse);

Document document1 = parseXML(expectedResponse);
Document document2 = parseXML(responsePayload);

if (!document1.isEqualNode(document2)) {
Assert.fail("Response payload mismatched: " + responsePayload + " expected: " + expectedResponse);
}
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator with XML and variable output")
public void testScatterGatherXMLVariableOutput() throws IOException, InterruptedException, ParserConfigurationException, SAXException {

CarbonLogReader carbonLogReader = new CarbonLogReader();
carbonLogReader.start();

String requestPayload = "<root>\n" +
" <requestId>78658</requestId>\n" +
"</root>";

String serviceURL = getMainSequenceURL() + "scatter-gather/xml-variable-output";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/xml");
String responsePayload = httpClient.getResponsePayload(httpResponse);

Document document1 = parseXML(requestPayload);
Document document2 = parseXML(responsePayload);

if (!document1.isEqualNode(document2)) {
Assert.fail("Response payload mismatched: " + responsePayload + " expected: " + requestPayload);
}

boolean logFound = carbonLogReader
.checkForLog("Scatter Gather XML output = <scatter_response><pet><name>pet1</name><type>cat</type>" +
"<requestId>78658</requestId></pet><pet><name>pet2</name><type>dog</type><requestId>78658</requestId>" +
"</pet></scatter_response>", DEFAULT_TIMEOUT);
Assert.assertTrue(logFound, "Scatter Gather result not set to variable");
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator with Aggregation condition")
public void testScatterGatherJSONCondition() throws IOException {

String expectedResponse = "[\n" +
" {\n" +
" \"name\":\"pet1\",\n" +
" \"type\":\"dog\",\n" +
" \"requestId\":1114567\n" +
" },\n" +
" {\n" +
" \"name\":\"pet3\",\n" +
" \"type\":\"dog\",\n" +
" \"requestId\":1114567\n" +
" }\n" +
"]";

String requestPayload = "{\n" +
" \"requestId\": 1114567\n" +
"}";

String serviceURL = getMainSequenceURL() + "scatter-gather/aggregate-condition";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/json");
String responsePayload = httpClient.getResponsePayload(httpResponse);

JsonElement responseJSON = JsonParser.parseString(responsePayload);
JsonElement expectedJSON = JsonParser.parseString(expectedResponse);
assertEquals(responseJSON, expectedJSON, "Response payload mismatched");
}

@Test(groups = {"wso2.esb"}, description = "Testing Scatter-Gather mediator when a path fails")
public void testScatterGatherJSON404EPClone() throws IOException {

String expectedResponse = "[\n" +
" {\n" +
" \"name\":\"pet1\",\n" +
" \"type\":\"dog\",\n" +
" \"requestId\":1114567\n" +
" },\n" +
" {\n" +
" \"name\":\"pet3\",\n" +
" \"type\":\"dog\",\n" +
" \"requestId\":1114567\n" +
" }\n" +
"]";

String requestPayload = "{\n" +
" \"requestId\": 1114567\n" +
"}";

String serviceURL = getMainSequenceURL() + "scatter-gather/not-found-ep";
HttpResponse httpResponse = httpClient.doPost(serviceURL, null, requestPayload, "application/json");
String responsePayload = httpClient.getResponsePayload(httpResponse);

JsonElement responseJSON = JsonParser.parseString(responsePayload);
JsonElement expectedJSON = JsonParser.parseString(expectedResponse);
assertEquals(responseJSON, expectedJSON, "Response payload mismatched");
}

private static Document parseXML(String xml) throws IOException, ParserConfigurationException, SAXException {

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setIgnoringElementContentWhitespace(true);
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse(new java.io.ByteArrayInputStream(xml.getBytes()));
}

@AfterClass(alwaysRun = true)
private void destroy() throws Exception {

super.cleanup();
}
}
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