Attempt to add extension that extends TestExecutionListener

Author: sarahchen6

components/context/build.gradle.kts

@@ -8,6 +8,12 @@ jmh {
   version = "1.28"
 }
 
+dependencies {
+  testImplementation("org.junit.jupiter:junit-jupiter-api:5.9.0")
+  testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.9.0")
+  implementation("org.junit.platform:junit-platform-launcher:1.9.0")
+}
+
 val excludedClassesInstructionCoverage by extra {
   listOf("datadog.context.ContextProviders") // covered by forked test
 }

components/context/src/main/resources/META-INF/services/org.junit.platform.launcher.listeners.TestExecutionListener

@@ -0,0 +1 @@
+datadog.context.SourceFileExtension

components/context/src/test/java/datadog/context/SourceFileExtension.java

@@ -0,0 +1,29 @@
+package datadog.context;
+
+import org.junit.platform.engine.TestExecutionResult;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestIdentifier;
+import org.junit.platform.launcher.TestPlan;
+
+public class SourceFileExtension implements TestExecutionListener {
+  public void executionStarted(TestIdentifier testIdentifier) {
+    System.out.println("EXECUTIONSTARTED.");
+  }
+
+  public void testPlanExecutionStarted(TestPlan testPlan) {
+    System.out.println("TESTPLANEXECUTIONSTARTED.");
+  }
+
+  public void executionFinished(
+      TestIdentifier testIdentifier, TestExecutionResult testExecutionResult) {
+    System.out.println("EXECUTIONFINISHED.");
+    // get test source file info here
+  }
+
+  public void testPlanExecutionFinished(TestPlan testPlan) {
+    System.out.println("TESTPLANEXECUTIONFINISHED.");
+    // get xml report file
+    // modify report with test source file info
+    // save resulting file
+  }
+}