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Add Java scenarios: Phase 2 (size M, #17-#26)
Add 10 Java scenario implementations covering: - callbacks: hooks (pre/post tool use, session start/end), permissions - prompts: attachments - sessions: concurrent-sessions, session-resume - tools: custom-agents, tool-overrides, mcp-servers, skills - auth: gh-app (OAuth device flow) All scenarios compile successfully with mvn compile. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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‎test/scenarios/auth/gh-app/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.copilot.sdk.scenarios</groupId>
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<artifactId>scenario-auth-gh-app</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.github</groupId>
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<artifactId>copilot-sdk-java</artifactId>
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<version>1.0.0-beta-java.5-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

‎test/scenarios/auth/gh-app/java/src/main/java/Main.java‎

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import com.github.copilot.sdk.CopilotClient;
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import com.github.copilot.sdk.json.CopilotClientOptions;
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import com.github.copilot.sdk.json.MessageOptions;
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import com.github.copilot.sdk.json.SessionConfig;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import com.fasterxml.jackson.databind.JsonNode;
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import com.fasterxml.jackson.databind.ObjectMapper;
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public class Main {
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public static void main(String[] args) throws Exception {
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var clientId = System.getenv("GITHUB_OAUTH_CLIENT_ID");
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if (clientId == null || clientId.isEmpty()) {
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System.err.println("Missing GITHUB_OAUTH_CLIENT_ID");
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System.exit(1);
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}
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var mapper = new ObjectMapper();
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var httpClient = HttpClient.newHttpClient();
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// Step 1: Request device code
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var deviceCodeReq = HttpRequest.newBuilder()
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.uri(URI.create("https://github.com/login/device/code"))
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.header("Accept", "application/json")
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.header("User-Agent", "copilot-sdk-java")
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.POST(HttpRequest.BodyPublishers.ofString("client_id=" + clientId))
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.header("Content-Type", "application/x-www-form-urlencoded")
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.build();
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var deviceCodeResp = httpClient.send(deviceCodeReq, HttpResponse.BodyHandlers.ofString());
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var deviceCode = mapper.readTree(deviceCodeResp.body());
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var userCode = deviceCode.get("user_code").asText();
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var verificationUri = deviceCode.get("verification_uri").asText();
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var code = deviceCode.get("device_code").asText();
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var interval = deviceCode.get("interval").asInt();
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System.out.println("Please visit: " + verificationUri);
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System.out.println("Enter code: " + userCode);
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// Step 2: Poll for access token
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String accessToken = null;
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while (accessToken == null) {
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Thread.sleep(interval * 1000L);
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var tokenReq = HttpRequest.newBuilder()
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.uri(URI.create("https://github.com/login/oauth/access_token"))
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.header("Accept", "application/json")
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.header("Content-Type", "application/x-www-form-urlencoded")
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.POST(HttpRequest.BodyPublishers.ofString(
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"client_id=" + clientId
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+ "&device_code=" + code
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+ "&grant_type=urn:ietf:params:oauth:grant-type:device_code"))
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.build();
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var tokenResp = httpClient.send(tokenReq, HttpResponse.BodyHandlers.ofString());
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var tokenData = mapper.readTree(tokenResp.body());
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if (tokenData.has("access_token")) {
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accessToken = tokenData.get("access_token").asText();
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} else if (tokenData.has("error")) {
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var err = tokenData.get("error").asText();
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if ("authorization_pending".equals(err)) continue;
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if ("slow_down".equals(err)) { interval += 5; continue; }
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throw new RuntimeException("OAuth error: " + err);
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}
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}
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// Step 3: Verify authentication
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var userReq = HttpRequest.newBuilder()
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.uri(URI.create("https://api.github.com/user"))
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.header("Authorization", "Bearer " + accessToken)
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.header("User-Agent", "copilot-sdk-java")
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.GET()
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.build();
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var userResp = httpClient.send(userReq, HttpResponse.BodyHandlers.ofString());
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var userData = mapper.readTree(userResp.body());
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System.out.println("Authenticated as: " + userData.get("login").asText());
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// Step 4: Use the token with Copilot
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try (var client = new CopilotClient(new CopilotClientOptions()
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.setGitHubToken(accessToken))) {
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client.start().get();
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var session = client.createSession(
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new SessionConfig()
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.setModel("claude-haiku-4.5"))
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.get();
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var response = session.sendAndWait(
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new MessageOptions().setPrompt("What is the capital of France?"))
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.get();
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if (response != null) {
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System.out.println(response.getData().content());
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}
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client.stop().get();
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}
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}
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}

‎test/scenarios/callbacks/hooks/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.copilot.sdk.scenarios</groupId>
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<artifactId>scenario-callbacks-hooks</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.github</groupId>
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<artifactId>copilot-sdk-java</artifactId>
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<version>1.0.0-beta-java.5-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

‎test/scenarios/callbacks/hooks/java/src/main/java/Main.java‎

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import com.github.copilot.sdk.CopilotClient;
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import com.github.copilot.sdk.json.HookInvocation;
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import com.github.copilot.sdk.json.MessageOptions;
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import com.github.copilot.sdk.json.PermissionHandler;
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import com.github.copilot.sdk.json.PostToolUseHookOutput;
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import com.github.copilot.sdk.json.PreToolUseHookOutput;
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import com.github.copilot.sdk.json.SessionConfig;
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import com.github.copilot.sdk.json.SessionEndHookOutput;
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import com.github.copilot.sdk.json.SessionHooks;
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import com.github.copilot.sdk.json.SessionStartHookOutput;
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import com.github.copilot.sdk.json.UserPromptSubmittedHookOutput;
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import java.util.ArrayList;
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import java.util.concurrent.CompletableFuture;
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public class Main {
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public static void main(String[] args) throws Exception {
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var hookLog = new ArrayList<String>();
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try (var client = new CopilotClient()) {
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client.start().get();
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var session = client.createSession(
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new SessionConfig()
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.setModel("claude-haiku-4.5")
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.setOnPermissionRequest(PermissionHandler.APPROVE_ALL)
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.setHooks(new SessionHooks()
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.setOnSessionStart((input, invocation) -> {
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hookLog.add("onSessionStart");
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return CompletableFuture.completedFuture(null);
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})
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.setOnSessionEnd((input, invocation) -> {
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hookLog.add("onSessionEnd");
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return CompletableFuture.completedFuture(null);
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})
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.setOnPreToolUse((input, invocation) -> {
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hookLog.add("onPreToolUse:" + input.getToolName());
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return CompletableFuture.completedFuture(PreToolUseHookOutput.allow());
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})
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.setOnPostToolUse((input, invocation) -> {
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hookLog.add("onPostToolUse:" + input.getToolName());
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return CompletableFuture.completedFuture(null);
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})
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.setOnUserPromptSubmitted((input, invocation) -> {
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hookLog.add("onUserPromptSubmitted");
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return CompletableFuture.completedFuture(null);
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})))
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.get();
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var response = session.sendAndWait(
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new MessageOptions().setPrompt(
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"List the files in the current directory using the glob tool with pattern '*.md'."))
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.get();
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if (response != null) {
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System.out.println(response.getData().content());
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}
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System.out.println("\n--- Hook execution log ---");
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for (var entry : hookLog) {
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System.out.println(" " + entry);
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}
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System.out.println("\nTotal hooks fired: " + hookLog.size());
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client.stop().get();
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}
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}
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}

‎test/scenarios/callbacks/permissions/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.copilot.sdk.scenarios</groupId>
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<artifactId>scenario-callbacks-permissions</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.github</groupId>
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<artifactId>copilot-sdk-java</artifactId>
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<version>1.0.0-beta-java.5-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

‎test/scenarios/callbacks/permissions/java/src/main/java/Main.java‎

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import com.github.copilot.sdk.CopilotClient;
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import com.github.copilot.sdk.json.MessageOptions;
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import com.github.copilot.sdk.json.PermissionHandler;
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import com.github.copilot.sdk.json.PermissionRequest;
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import com.github.copilot.sdk.json.PermissionRequestResult;
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import com.github.copilot.sdk.json.PermissionRequestResultKind;
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import com.github.copilot.sdk.json.PreToolUseHookOutput;
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import com.github.copilot.sdk.json.SessionConfig;
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import com.github.copilot.sdk.json.SessionHooks;
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import java.util.ArrayList;
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import java.util.concurrent.CompletableFuture;
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public class Main {
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public static void main(String[] args) throws Exception {
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var permissionLog = new ArrayList<String>();
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try (var client = new CopilotClient()) {
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client.start().get();
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var session = client.createSession(
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new SessionConfig()
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.setModel("claude-haiku-4.5")
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.setOnPermissionRequest((request, invocation) -> {
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permissionLog.add("approved:" + request.getKind());
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return CompletableFuture.completedFuture(
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new PermissionRequestResult()
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.setKind(PermissionRequestResultKind.APPROVED));
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})
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.setHooks(new SessionHooks()
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.setOnPreToolUse((input, invocation) ->
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CompletableFuture.completedFuture(PreToolUseHookOutput.allow()))))
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.get();
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var response = session.sendAndWait(
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new MessageOptions().setPrompt(
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"List the files in the current directory using glob with pattern '*.md'."))
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.get();
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if (response != null) {
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System.out.println(response.getData().content());
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}
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System.out.println("\n--- Permission request log ---");
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for (var entry : permissionLog) {
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System.out.println(" " + entry);
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}
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System.out.println("\nTotal permission requests: " + permissionLog.size());
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client.stop().get();
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}
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}
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}

‎test/scenarios/prompts/attachments/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.copilot.sdk.scenarios</groupId>
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<artifactId>scenario-prompts-attachments</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.github</groupId>
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<artifactId>copilot-sdk-java</artifactId>
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<version>1.0.0-beta-java.5-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

‎test/scenarios/prompts/attachments/java/src/main/java/Main.java‎

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import com.github.copilot.sdk.CopilotClient;
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import com.github.copilot.sdk.json.Attachment;
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import com.github.copilot.sdk.json.MessageOptions;
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import com.github.copilot.sdk.json.SessionConfig;
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import com.github.copilot.sdk.json.SystemMessageConfig;
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import com.github.copilot.sdk.SystemMessageMode;
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import java.nio.file.Path;
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import java.util.List;
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public class Main {
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public static void main(String[] args) throws Exception {
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try (var client = new CopilotClient()) {
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client.start().get();
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var session = client.createSession(
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new SessionConfig()
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.setModel("claude-haiku-4.5")
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.setSystemMessage(new SystemMessageConfig()
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.setMode(SystemMessageMode.REPLACE)
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.setContent("You are a helpful assistant. Answer questions about attached files concisely."))
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.setAvailableTools(List.of()))
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.get();
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var sampleFile = Path.of(System.getProperty("user.dir"), "..", "sample-data.txt")
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.toAbsolutePath().normalize().toString();
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var response = session.sendAndWait(
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new MessageOptions()
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.setPrompt("What languages are listed in the attached file?")
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.setAttachments(List.of(
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new Attachment("file", sampleFile, "sample-data.txt"))))
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.get();
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if (response != null) {
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System.out.println(response.getData().content());
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}
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client.stop().get();
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}
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}
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}

‎test/scenarios/sessions/concurrent-sessions/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.copilot.sdk.scenarios</groupId>
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<artifactId>scenario-sessions-concurrent-sessions</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.release>17</maven.compiler.release>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.github</groupId>
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<artifactId>copilot-sdk-java</artifactId>
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<version>1.0.0-beta-java.5-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

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