[TS-38628] [Report-Generator] Migration to Kotlin

agent/src/main/java/com/teamscale/jacoco/agent/testimpact/CoverageToJsonStrategyBase.java

@@ -121,7 +121,7 @@ private String createTestwiseCoverageReport(boolean partial) throws IOException,
 			if (execution == null) {
 				return null;
 			} else {
-				return execution.getUniformPath();
+				return execution.uniformPath;
 			}
 		}).collect(toList());
 
@@ -132,10 +132,9 @@ private String createTestwiseCoverageReport(boolean partial) throws IOException,
 		reportGenerator.updateClassDirCache();
 		TestwiseCoverage testwiseCoverage = reportGenerator.convert(testExecFile);
 		logger.debug("Created testwise coverage report (containing coverage for tests `{}`)",
-				testwiseCoverage.getTests().stream().map(TestCoverageBuilder::getUniformPath).collect(toList()));
+				testwiseCoverage.getTests().values().stream().map(TestCoverageBuilder::getUniformPath).collect(toList()));
 
-		TestwiseCoverageReport report = TestwiseCoverageReportBuilder
-				.createFrom(availableTests, testwiseCoverage.getTests(), testExecutions, partial);
+		TestwiseCoverageReport report = TestwiseCoverageReportBuilder.createFrom(availableTests, testwiseCoverage.getTests().values(), testExecutions, partial);
 
 		testExecFile.delete();
 		testExecFile = null;

agent/src/main/java/com/teamscale/jacoco/agent/testimpact/CoverageViaHttpStrategy.java

@@ -11,6 +11,8 @@
 import com.teamscale.report.testwise.model.builder.TestInfoBuilder;
 import org.slf4j.Logger;
 
+import java.util.Objects;
+
 /**
  * Strategy which directly converts the collected coverage into a JSON object in place and returns the result to the
  * caller as response to the http request. If a test execution is given it is merged into the representation and
@@ -36,12 +38,12 @@ public TestInfo testEnd(String test, TestExecution testExecution)
 		TestInfoBuilder builder = new TestInfoBuilder(test);
 		Dump dump = controller.dumpAndReset();
 		reportGenerator.updateClassDirCache();
-		builder.setCoverage(reportGenerator.convert(dump));
+		builder.setCoverage(Objects.requireNonNull(reportGenerator.convert(dump)));
 		if (testExecution != null) {
 			builder.setExecution(testExecution);
 		}
 		TestInfo testInfo = builder.build();
-		logger.debug("Generated test info {}", testInfo.toString());
+		logger.debug("Generated test info {}", testInfo);
 		return testInfo;
 	}
 }

agent/src/main/java/com/teamscale/jacoco/agent/testimpact/TestEventHandlerStrategyBase.java

@@ -65,7 +65,7 @@ public void testStart(String test) {
 	public TestInfo testEnd(String test,
 							TestExecution testExecution) throws JacocoRuntimeController.DumpException, CoverageGenerationException {
 		if (testExecution != null) {
-			testExecution.setUniformPath(test);
+			testExecution.uniformPath = test;
 			if (startTimestamp != -1) {
 				long endTimestamp = System.currentTimeMillis();
 				testExecution.setDurationMillis(endTimestamp - startTimestamp);

agent/src/main/java/com/teamscale/jacoco/agent/upload/HttpZipUploaderBase.java

@@ -143,7 +143,7 @@ private File createZipFile(CoverageFile coverageFile) throws IOException {
 	 */
 	private void fillZipFile(ZipOutputStream zipOutputStream, CoverageFile coverageFile) throws IOException {
 		zipOutputStream.putNextEntry(new ZipEntry(getZipEntryCoverageFileName(coverageFile)));
-		coverageFile.copy(zipOutputStream);
+		coverageFile.copyStream(zipOutputStream);
 
 		for (Path additionalFile : additionalMetaDataFiles) {
 			zipOutputStream.putNextEntry(new ZipEntry(additionalFile.getFileName().toString()));

common-system-test/src/main/java/com/teamscale/test/commons/SystemTestUtils.java

@@ -49,7 +49,7 @@ public class SystemTestUtils {
 	 * Example: {@code file1.java:1,7-12;file2.java:9-22,33}
 	 */
 	public static String getCoverageString(TestInfo info) {
-		return info.paths.stream().flatMap(path -> path.getFiles().stream())
+		return info.paths.stream().flatMap(path -> path.files.stream())
 				.map(file -> file.fileName + ":" + file.coveredLines).collect(
 						Collectors.joining(";"));
 	}

impacted-test-engine/src/test/java/com/teamscale/test_impacted/engine/executor/TestwiseCoverageCollectingExecutionListenerTest.java

@@ -85,9 +85,9 @@ void testInteractionWithListenersAndCoverageApi() {
 
 		assertThat(testExecutions).hasSize(2);
 		assertThat(testExecutions).anySatisfy(testExecution ->
-				assertThat(testExecution.getUniformPath()).isEqualTo("MyClass/impactedTestCase()"));
+				assertThat(testExecution.uniformPath).isEqualTo("MyClass/impactedTestCase()"));
 		assertThat(testExecutions).anySatisfy(testExecution ->
-				assertThat(testExecution.getUniformPath()).isEqualTo("MyClass/regularSkippedTestCase()"));
+				assertThat(testExecution.uniformPath).isEqualTo("MyClass/regularSkippedTestCase()"));
 	}
 
 	@Test
@@ -125,6 +125,6 @@ void testSkipOfTestClass() {
 
 		assertThat(testExecutions).hasSize(2);
 		assertThat(testExecutions)
-				.allMatch(testExecution -> testExecution.getResult().equals(ETestExecutionResult.SKIPPED));
+				.allMatch(testExecution -> testExecution.result.equals(ETestExecutionResult.SKIPPED));
 	}
 }

report-generator/build.gradle.kts

@@ -3,6 +3,7 @@ plugins {
     com.teamscale.`java-convention`
     com.teamscale.coverage
     com.teamscale.publish
+    kotlin("jvm")
 }
 
 publishAs {