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test: add integration tests for chat history feature #8874

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6f1aaad
test: add integration tests for chat history feature
ugur-vaadin Mar 9, 2026
02a598e
test: update test to use refresh to mimic real use and move test
ugur-vaadin Mar 11, 2026
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29 changes: 26 additions & 3 deletions ...ntegration-tests/src/main/java/com/vaadin/flow/component/ai/tests/AIOrchestratorPage.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,13 @@
*/
package com.vaadin.flow.component.ai.tests;

import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.vaadin.flow.component.ai.common.AIAttachment;
import com.vaadin.flow.component.ai.common.ChatMessage;
import com.vaadin.flow.component.ai.orchestrator.AIOrchestrator;
import com.vaadin.flow.component.ai.provider.LLMProvider;
import com.vaadin.flow.component.html.Div;
Expand All @@ -34,6 +36,7 @@
import com.vaadin.flow.component.upload.UploadFileListVariant;
import com.vaadin.flow.component.upload.UploadManager;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.VaadinSession;

import reactor.core.publisher.Flux;

Expand All @@ -45,14 +48,17 @@
@Route("vaadin-ai/orchestrator")
public class AIOrchestratorPage extends UploadDropZone {

private final AIOrchestrator orchestrator;
private static final String HISTORY_SESSION_KEY = "ai-orchestrator-history";

private AIOrchestrator orchestrator;

// Attachment storage keyed by message ID
private final Map<String, List<AIAttachment>> attachmentStorage = new HashMap<>();

// Displays info about the last clicked attachment
private final Span clickedAttachmentInfo = new Span();

@SuppressWarnings("unchecked")
public AIOrchestratorPage() {
setHeightFull();

Expand All @@ -74,7 +80,7 @@ public AIOrchestratorPage() {

clickedAttachmentInfo.setId("clicked-attachment-info");

orchestrator = AIOrchestrator.builder(new EchoLLMProvider(), null)
var builder = AIOrchestrator.builder(new EchoLLMProvider(), null)
.withMessageList(messageList).withInput(messageInput)
.withFileReceiver(uploadManager)
.withAttachmentSubmitListener(event -> {
Expand All @@ -89,7 +95,18 @@ public AIOrchestratorPage() {
clickedAttachmentInfo.setText(attachment.name() + " | "
+ attachment.mimeType());
}
}).build();
})
.withResponseCompleteListener(event -> VaadinSession
.getCurrent().setAttribute(HISTORY_SESSION_KEY,
orchestrator.getHistory()));

var savedHistory = (List<ChatMessage>) VaadinSession.getCurrent()
.getAttribute(HISTORY_SESSION_KEY);
if (savedHistory != null) {
builder.withHistory(savedHistory, Collections.emptyMap());
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@tomivirkki tomivirkki Mar 12, 2026

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Instead of Collections.emptyMap() (= not restoring attachments with the history), also store the attachmentStorage to VaadinSession so they get restored on refresh

}

orchestrator = builder.build();

var promptButton = new NativeButton("Send Hello",
e -> orchestrator.prompt("Hello from button"));
Expand Down Expand Up @@ -117,5 +134,11 @@ public Flux<String> stream(LLMRequest request) {
var response = "Echo: " + request.userMessage();
return Flux.fromArray(response.split(" ")).map(word -> word + " ");
}

@Override
public void setHistory(List<ChatMessage> history,
Map<String, List<AIAttachment>> attachmentsByMessageId) {
// No-op for testing
}
}
}
17 changes: 17 additions & 0 deletions ...-integration-tests/src/test/java/com/vaadin/flow/component/ai/tests/AIOrchestratorIT.java
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,23 @@ public void uploadFile_submitMessage_attachmentRenderedInMessage()
Assert.assertNotNull(userMessage.getAttachmentByName("test-file.txt"));
}

@Test
public void submitMessage_refreshPage_historyRestored() {
messageInput.submit("Hello");
waitUntil(driver -> getMessageCount() >= 2, 5);
Assert.assertEquals(2, getMessageCount());

// Refresh the page - history should be auto-restored from session
open();
messageList = $(MessageListElement.class).single();

waitUntil(driver -> getMessageCount() >= 2, 5);
var messages = messageList.getMessageElements();
Assert.assertEquals(2, messages.size());
Assert.assertTrue(messages.get(0).getText().contains("Hello"));
Assert.assertTrue(messages.get(1).getText().contains("Echo: Hello"));
}

@Test
public void uploadFile_submitMessage_clickAttachment_infoDisplayed()
throws Exception {
Expand Down