chore: Additional log assertions

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/assertions/MultipleNodeLogResultsAssert.java

@@ -15,7 +15,7 @@
  *
  * <p>Provides custom assertions for validating log results across multiple nodes.
  */
-@SuppressWarnings("unused")
+@SuppressWarnings({"unused", "UnusedReturnValue"})
 public class MultipleNodeLogResultsAssert extends AbstractAssert<MultipleNodeLogResultsAssert, MultipleNodeLogResults> {
 
     /**
@@ -83,4 +83,21 @@ public MultipleNodeLogResultsAssert haveNoMessagesWithLevelHigherThan(@NonNull f
     public MultipleNodeLogResultsAssert haveNoErrorLevelMessages() {
         return haveNoMessagesWithLevelHigherThan(Level.WARN);
     }
+
+    /**
+     * Verifies that no log message contains the specified content.
+     *
+     * @param searchString the substring that should not be present
+     * @return this assertion object for method chaining
+     */
+    @NonNull
+    public MultipleNodeLogResultsAssert haveNoMessageContaining(@NonNull final String searchString) {
+        isNotNull();
+
+        for (final SingleNodeLogResult result : actual.results()) {
+            OtterAssertions.assertThat(result).hasNoMessageContaining(searchString);
+        }
+
+        return this;
+    }
 }

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/assertions/MultipleNodeLogResultsContinuousAssert.java

@@ -123,6 +123,21 @@ public MultipleNodeLogResultsContinuousAssert haveNoErrorLevelMessages() {
         return haveNoMessageWithLevelHigherThan(Level.WARN);
     }
 
+    /**
+     * Verifies that no log message contains the specified content.
+     *
+     * @param searchString the substring that should not be present
+     * @return this assertion object for method chaining
+     */
+    @NonNull
+    public MultipleNodeLogResultsContinuousAssert haveNoMessageContaining(@NonNull final String searchString) {
+        return checkContinuously(logEntry -> {
+            if (logEntry.message().contains(searchString)) {
+                failWithMessage("Expected no message containing '%s', but found in %n%s", searchString, logEntry);
+            }
+        });
+    }
+
     private MultipleNodeLogResultsContinuousAssert checkContinuously(final Consumer<StructuredLog> check) {
         isNotNull();
 

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/assertions/SingleNodeLogResultAssert.java

@@ -101,10 +101,48 @@ public SingleNodeLogResultAssert hasNoMessagesWithLevelHigherThan(@NonNull final
      *
      * @return this assertion object for method chaining
      */
+    @NonNull
     public SingleNodeLogResultAssert hasNoErrorLevelMessages() {
         return hasNoMessagesWithLevelHigherThan(Level.WARN);
     }
 
+    /**
+     * Verifies that at least one log message contains the specified substring.
+     *
+     * @param expectedMessage the substring to search for in log messages
+     * @return this assertion object for method chaining
+     */
+    @NonNull
+    public SingleNodeLogResultAssert hasMessageContaining(@NonNull final String expectedMessage) {
+        isNotNull();
+        final List<StructuredLog> logs = actual.logs().stream()
+                .filter(log -> log.message().contains(expectedMessage))
+                .toList();
+        if (logs.isEmpty()) {
+            failWithMessage("Expected to find a message containing '%s', but did not", expectedMessage);
+        }
+        return this;
+    }
+
+    /**
+     * Verifies that no log message contains the specified substring.
+     *
+     * @param searchString the substring that should not be present
+     * @return this assertion object for method chaining
+     */
+    @NonNull
+    public SingleNodeLogResultAssert hasNoMessageContaining(@NonNull final String searchString) {
+        isNotNull();
+        final List<StructuredLog> logs = actual.logs().stream()
+                .filter(log -> log.message().contains(searchString))
+                .toList();
+        if (!logs.isEmpty()) {
+            final String message = String.format("Expected to find no message containing '%s'", searchString);
+            failWithMessage(message, logs);
+        }
+        return this;
+    }
+
     /**
      * Fails the assertion with a custom message and the list of log entries that caused the failure.
      *

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/assertions/SingleNodeLogResultContinuousAssert.java

@@ -122,6 +122,21 @@ public SingleNodeLogResultContinuousAssert haveNoErrorLevelMessages() {
         return haveNoMessageWithLevelHigherThan(Level.WARN);
     }
 
+    /**
+     * Verifies that no log message contains the specified substring.
+     *
+     * @param searchString the substring that should not be present
+     * @return this assertion object for method chaining
+     */
+    @NonNull
+    public SingleNodeLogResultContinuousAssert hasNoMessageContaining(@NonNull final String searchString) {
+        return checkContinuously(logEntry -> {
+            if (logEntry.message().contains(searchString)) {
+                failWithMessage("Expected no message containing '%s', but found in %n%s", searchString, logEntry);
+            }
+        });
+    }
+
     private SingleNodeLogResultContinuousAssert checkContinuously(final Consumer<StructuredLog> check) {
         isNotNull();
 

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/internal/result/MultipleNodeLogResultsImpl.java

@@ -79,7 +79,7 @@ public void subscribe(@NonNull final LogSubscriber subscriber) {
     public MultipleNodeLogResults suppressingNode(@NonNull final NodeId nodeId) {
         requireNonNull(nodeId, "nodeId cannot be null");
         final List<SingleNodeLogResult> filteredResults = results.stream()
-                .filter(res -> Objects.equals(res.nodeId(), nodeId))
+                .filter(result -> !Objects.equals(result.nodeId(), nodeId))
                 .toList();
 
         return new MultipleNodeLogResultsImpl(filteredResults);

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/internal/result/MultipleNodePcesResultsImpl.java

@@ -28,7 +28,7 @@ public record MultipleNodePcesResultsImpl(@NonNull List<SingleNodePcesResult> pc
     @NonNull
     public MultipleNodePcesResults suppressingNode(@NonNull final NodeId nodeId) {
         final List<SingleNodePcesResult> filtered = pcesResults.stream()
-                .filter(it -> Objects.equals(it.nodeId(), nodeId))
+                .filter(result -> !Objects.equals(result.nodeId(), nodeId))
                 .toList();
         return new MultipleNodePcesResultsImpl(filtered);
     }

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/internal/result/MultipleNodeReconnectResultsImpl.java

@@ -54,7 +54,7 @@ public MultipleNodeReconnectResultsImpl(@NonNull final List<SingleNodeReconnectR
     @NonNull
     public MultipleNodeReconnectResults suppressingNode(@NonNull final NodeId nodeId) {
         final List<SingleNodeReconnectResult> filtered = results.stream()
-                .filter(it -> Objects.equals(it.nodeId(), nodeId))
+                .filter(result -> !Objects.equals(result.nodeId(), nodeId))
                 .toList();
         return new MultipleNodeReconnectResultsImpl(filtered);
     }

platform-sdk/consensus-otter-tests/src/testFixtures/java/org/hiero/otter/fixtures/turtle/TurtleNode.java

@@ -39,6 +39,7 @@
 import java.nio.file.Path;
 import java.time.Duration;
 import java.time.Instant;
+import java.util.Objects;
 import java.util.function.Consumer;
 import org.hiero.consensus.model.node.KeysAndCerts;
 import org.hiero.consensus.model.node.NodeId;
@@ -234,7 +235,9 @@ protected void doStart(@NonNull final Duration timeout) {
                             wrapConsumerWithNodeContext(this::handlePlatformStatusChange));
 
             InMemorySubscriptionManager.INSTANCE.subscribe(logEntry -> {
-                resultsCollector.addLogEntry(logEntry);
+                if (Objects.equals(logEntry.nodeId(), selfId)) {
+                    resultsCollector.addLogEntry(logEntry);
+                }
                 return lifeCycle == DESTROYED ? UNSUBSCRIBE : CONTINUE;
             });