Add JaCoCo test coverage reporting

[Copilot]

Integrates JaCoCo 0.8.12 for test coverage analysis.

Configuration

• Build plugin: Instruments bytecode during test execution, generates HTML/XML reports in target/site/jacoco-coverage/
• Reporting plugin: Integrates coverage reports into Maven site generation
• Scope: All com.github.copilot.sdk classes, excluding test infrastructure (E2ETestContext, CapiProxy)
• Execution data: target/jacoco-test-results/sdk-tests.exec

Usage

mvn verify                    # Generate coverage reports
mvn verify site              # Include in Maven site

Reports accessible at target/site/jacoco-coverage/index.html

Current Metrics

• 65% instruction coverage (5,347/8,116)
• 57% branch coverage (219/382)
• 158 classes analyzed

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/copilot_internal/user
  • Triggering command: /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot --server --log-level info --stdio --auth-token-env COPILOT_SDK_AUTH_TOKEN --no-auto-login (http block)
  • Triggering command: /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot --server --log-level info --stdio --auth-token-env COPILOT_SDK_AUTH_TOKEN --no-auto-login ame (http block)
  • Triggering command: /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot /home/REDACTED/work/copilot-sdk-java/copilot-sdk-java/target/copilot-sdk/test/harness/node_modules/@github/copilot-linux-x64/copilot --server --log-level info --stdio --auth-token-env COPILOT_SDK_AUTH_TOKEN --no-auto-login user.email (http block)
• opensource.org
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/copilot-sdk-java/copilot-sdk-java org.codehaus.plexus.classworlds.launcher.Launcher site ava/target/copilot-sdk/test/harness/node_modules/.bin/sh bash --no�� --noprofile git /usr/sbin/which copilot/include-which (dns block)
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/copilot-sdk-java/copilot-sdk-java org.codehaus.plexus.classworlds.launcher.Launcher site:site rgo/bin/git which k/co�� (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Include JaCoCo for test coverage</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Include JaCoCo for test coverage #13

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