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XHRFetchDevToolsTest.java
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XHRFetchDevToolsTest.java
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package com.github.sergueik.selenium;
/**
* Copyright 2021,2023,2024 Serguei Kouzmine
*/
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import org.apache.commons.codec.binary.Base64;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriverException;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.devtools.DevToolsException;
import org.openqa.selenium.devtools.v127.fetch.Fetch;
import org.openqa.selenium.devtools.v127.fetch.model.HeaderEntry;
import org.openqa.selenium.devtools.v127.fetch.model.RequestPattern;
import org.openqa.selenium.devtools.v127.fetch.model.RequestPaused;
import org.openqa.selenium.devtools.v127.fetch.model.RequestStage;
import org.openqa.selenium.devtools.v127.network.model.ResourceType;
import com.google.gson.Gson;
/**
* Selected test scenarios for Selenium Chrome Developer Tools Selenium 4 bridge
* see:
* https://chromedevtools.github.io/devtools-protocol/tot/Fetch/#method-enable
* https://chromedevtools.github.io/devtools-protocol/tot/Fetch/#event-requestPaused
* https://chromedevtools.github.io/devtools-protocol/tot/Fetch/#method-getResponseBody
* https://chromedevtools.github.io/devtools-protocol/tot/Fetch/#method-continueResponse
* https://chromedevtools.github.io/devtools-protocol/tot/Fetch/#method-disable
*
* @author: Serguei Kouzmine (kouzmine_serguei@yahoo.com)
*/
// based on:
// https://github.com/rookieInTraining/selenium-cdp-examples/blob/main/src/test/java/com/rookieintraining/cdp/examples/Fetch.java
// see also:
// https://groups.google.com/g/selenium-users/c/OueDjaEqp2U
//
// https://automated-testing.info/t/rabota-s-trafikom-fetch-xhr-pri-pomoshhi-selenium-4-webdriver-primer-vnutri/25503
// (same code, discussion in Russian)
// (in c# 5.x)
public class XHRFetchDevToolsTest extends BaseDevToolsTest {
public Actions actions;
private final static String url = "https://en.wikipedia.org/wiki/XMLHttpRequest";
private final int count = 5;
@Before
public void beforeTest() throws Exception {
List<RequestPattern> reqPattern = new ArrayList<>();
RequestPattern xhrReqPattern = new RequestPattern(Optional.of("*"),
Optional.of(ResourceType.XHR), Optional.of(RequestStage.RESPONSE));
reqPattern.add(xhrReqPattern);
chromeDevTools
.send(Fetch.enable(Optional.of(reqPattern), Optional.of(false)));
}
@After
public void afterTest() throws Exception {
chromeDevTools.clearListeners();
chromeDevTools.send(Fetch.disable());
}
@Test
public void test() {
// Arrange
final Gson gson = new Gson();
try {
chromeDevTools.addListener(Fetch.requestPaused(),
(RequestPaused event) -> {
try {
List<HeaderEntry> headerEntries = event.getResponseHeaders()
.isPresent() ? event.getResponseHeaders().get()
: new ArrayList<>();
List<String> headers = headerEntries.stream()
.map((HeaderEntry entry) -> String.format("%s: %s",
entry.getName(), entry.getValue()))
.collect(Collectors.toList());
System.err.println("in Fetch.requestPaused listener. id:"
+ event.getRequestId().toString() + "\tURL: "
+ (event.getRequest().getUrlFragment().isPresent()
? event.getRequest().getUrlFragment().get() : "none")
+ "\trequest headers: " + event.getRequest().getHeaders()
+ "\response status: " + event.getResponseStatusCode().get()
+ "\tresponse headers: "
+ (event.getResponseHeaders().isPresent() ? headers : "none")
+ "\tresource type: " + event.getResourceType());
// always empty
// Also possible to work with headers as a map
// Map<String, Object> headersJsonMap = event.getRequest()
// .getHeaders().toJson();
event.getRequest().getPostData().ifPresent((String data) -> {
System.err.println("Post Data:\n" + data + "\n");
});
Fetch.GetResponseBodyResponse response = chromeDevTools
.send(Fetch.getResponseBody(event.getRequestId()));
String body = null;
if (response.getBase64Encoded()) {
try {
body = new String(
Base64.decodeBase64(response.getBody().getBytes("UTF8")));
} catch (UnsupportedEncodingException e) {
System.err.println("Exception (ignored): " + e.toString());
}
} else {
body = response.getBody();
}
System.err.println("response body:\n" + body);
@SuppressWarnings("unchecked")
Map<String, Object> payload = (Map<String, Object>) gson
.fromJson(body, Map.class);
System.err
.println("response extract:\n" + payload.get("extract"));
// this command is returning void
chromeDevTools.send(Fetch.continueRequest(event.getRequestId(),
Optional.empty(), Optional.empty(), Optional.empty(),
Optional.empty(), Optional.empty()));
} catch (DevToolsException e) {
System.err.println("Web Driver exception (ignored): "
+ Utils.processExceptionMessage(e.getMessage()));
// org.openqa.selenium.devtools.DevToolsException:
// {"id":6,"error":{"code":-32602,"message":"Invalid
// InterceptionId."},"sessionId":"4515310FC6FFDECA0705C54441EFD84B"}
}
});
// Act
// hover the links in the main wikipedia document
driver.get(url);
Utils.sleep(1000);
List<WebElement> elements = driver.findElement(By.id("mw-content-text"))
.findElements(By.tagName("a"));
actions = new Actions(driver);
elements.stream().limit(count).forEach((WebElement element) -> {
actions.moveToElement(element).build().perform();
Utils.sleep(1000);
});
} catch (WebDriverException e) {
System.err.println("Web Driver exception (ignored): "
+ Utils.processExceptionMessage(e.getMessage()));
} catch (Exception e) {
System.err.println("Exception: " + e.toString());
throw (new RuntimeException(e));
}
}
}