QuarkusDevModeTest: added ability to collect logs

Author: FroMage

test-framework/junit5-internal/src/main/java/io/quarkus/test/QuarkusDevModeTest.java

@@ -17,9 +17,13 @@
 import java.util.List;
 import java.util.ServiceLoader;
 import java.util.function.Function;
+import java.util.function.Predicate;
 import java.util.function.Supplier;
 import java.util.jar.Attributes;
 import java.util.jar.Manifest;
+import java.util.logging.LogManager;
+import java.util.logging.LogRecord;
+import java.util.logging.Logger;
 import java.util.stream.Stream;
 
 import org.jboss.shrinkwrap.api.exporter.ExplodedExporter;
@@ -58,14 +62,18 @@
 public class QuarkusDevModeTest
         implements BeforeEachCallback, AfterEachCallback, TestInstanceFactory {
 
+    private static final Logger rootLogger;
+
     static {
         System.setProperty("java.util.logging.manager", "org.jboss.logmanager.LogManager");
+        rootLogger = LogManager.getLogManager().getLogger("");
     }
 
     private DevModeMain devModeMain;
     private Path deploymentDir;
     private Supplier<JavaArchive> archiveProducer;
     private String logFileName;
+    private InMemoryLogHandler inMemoryLogHandler = new InMemoryLogHandler((r) -> false);
 
     private Path deploymentSourcePath;
     private Path deploymentResourcePath;
@@ -97,6 +105,15 @@ public QuarkusDevModeTest setLogFileName(String logFileName) {
         return this;
     }
 
+    public QuarkusDevModeTest setLogRecordPredicate(Predicate<LogRecord> predicate) {
+        this.inMemoryLogHandler = new InMemoryLogHandler(predicate);
+        return this;
+    }
+
+    public List<LogRecord> getLogRecords() {
+        return inMemoryLogHandler.records;
+    }
+
     public Object createTestInstance(TestInstanceFactoryContext factoryContext, ExtensionContext extensionContext)
             throws TestInstantiationException {
         try {
@@ -110,6 +127,7 @@ public Object createTestInstance(TestInstanceFactoryContext factoryContext, Exte
 
     @Override
     public void beforeEach(ExtensionContext extensionContext) throws Exception {
+        rootLogger.addHandler(inMemoryLogHandler);
         if (archiveProducer == null) {
             throw new RuntimeException("QuarkusDevModeTest does not have archive producer set");
         }
@@ -174,6 +192,7 @@ public void afterEach(ExtensionContext extensionContext) throws Exception {
                 FileUtil.deleteDirectory(deploymentDir);
             }
         }
+        rootLogger.removeHandler(inMemoryLogHandler);
     }
 
     private DevModeContext exportArchive(Path deploymentDir, Path testSourceDir) {