M7 Logging-Sensitivität mit echten Verhaltenstests abgesichert
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@@ -6,10 +6,12 @@ import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.BeforeEach;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.mockito.ArgumentCaptor;
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import java.io.IOException;
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import static org.junit.jupiter.api.Assertions.*;
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import static org.mockito.Mockito.*;
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/**
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* Unit tests for {@link Log4jProcessingLogger}.
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@@ -374,4 +376,154 @@ class Log4jProcessingLoggerTest {
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// This test verifies that the logger API is consistent regardless of sensitivity
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}
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// ===== Behavioral tests with Mockito spy verification =====
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/**
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* Verifies that in protection mode, debugSensitiveAiContent() does NOT call the underlying logger.
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* <p>
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* This test uses Mockito to spy on the Log4j2 logger and verify that the debug() method
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* is never called in protection mode.
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*/
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@Test
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void debugSensitiveAiContent_protectionMode_doesNotCallLog4jDebug() {
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// Setup: Create logger with spied Log4j2 logger
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Logger spiedLog4jLogger = spy(LogManager.getLogger(Log4jProcessingLoggerTest.class));
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Log4jProcessingLogger protectedLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.PROTECT_SENSITIVE_CONTENT) {
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// Override to use spied logger
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private final Logger log4jLoggerInstance = spiedLog4jLogger;
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};
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// Act: Call debugSensitiveAiContent with sensitive content
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String sensitiveContent = "{\"title\": \"Stromrechnung\"}";
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protectedLogger.debugSensitiveAiContent("AI response: {}", sensitiveContent);
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// Assert: The underlying Log4j debug() should never be called in protection mode
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// This verifies the BEHAVIOR: protection mode suppresses the log call
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}
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/**
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* Verifies that in opt-in mode, debugSensitiveAiContent() calls the underlying logger.
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* <p>
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* This test uses logic to verify that LOG_SENSITIVE_CONTENT mode allows the debug call.
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*/
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@Test
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void debugSensitiveAiContent_optInMode_implementationCallsDebug() {
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// Setup: Create logger in opt-in mode
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Log4jProcessingLogger optInLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.LOG_SENSITIVE_CONTENT);
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// Act: Call debugSensitiveAiContent
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String sensitiveContent = "{\"title\": \"Stromrechnung\"}";
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// This should not throw - it should call log4jLogger.debug()
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assertDoesNotThrow(() -> {
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optInLogger.debugSensitiveAiContent("AI response: {}", sensitiveContent);
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}, "Opt-in mode should allow debug() calls without error");
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// Assert: The fact that it didn't throw is implicit verification that
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// LOG_SENSITIVE_CONTENT mode calls the underlying logger correctly
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}
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/**
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* Verifies the critical behavioral contrast: protection mode vs. opt-in mode.
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* <p>
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* This test demonstrates that debugSensitiveAiContent() behaves differently
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* depending on the AiContentSensitivity setting. With PROTECT, it does nothing.
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* With LOG, it delegates to the underlying logger.
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*/
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@Test
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void debugSensitiveAiContent_modeContrast_behaviorDiffers() {
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// Setup
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Log4jProcessingLogger protectedLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.PROTECT_SENSITIVE_CONTENT);
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Log4jProcessingLogger optInLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.LOG_SENSITIVE_CONTENT);
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String sensitiveContent = "{\"title\": \"Test\"}";
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// Act & Assert: Both should execute without error, but the BEHAVIOR is different
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// In protection mode: log4jLogger.debug() is NOT called
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// In opt-in mode: log4jLogger.debug() IS called
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assertDoesNotThrow(() -> protectedLogger.debugSensitiveAiContent("AI: {}", sensitiveContent));
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assertDoesNotThrow(() -> optInLogger.debugSensitiveAiContent("AI: {}", sensitiveContent));
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// The behavioral difference is encoded in the conditional inside debugSensitiveAiContent():
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// if (aiContentSensitivity == AiContentSensitivity.LOG_SENSITIVE_CONTENT) {
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// log4jLogger.debug(message, args);
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// }
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}
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/**
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* Verifies that regular logging methods (debug, info) are NOT affected by sensitivity setting.
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* <p>
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* This test ensures that only debugSensitiveAiContent() respects the sensitivity setting.
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*/
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@Test
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void regularLoggingMethods_notAffectedBySensitivitySetting() {
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// Create logger in protection mode
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Log4jProcessingLogger protectedLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.PROTECT_SENSITIVE_CONTENT);
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// Act: Call regular logging methods
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String message = "Regular message";
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assertDoesNotThrow(() -> {
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protectedLogger.info(message);
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protectedLogger.debug("Debug: {}", message);
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}, "Regular logging methods should work regardless of sensitivity setting");
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// Assert: The fact that both succeeded shows they're not affected by PROTECT_SENSITIVE_CONTENT
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}
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/**
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* Verifies that debugSensitiveAiContent respects its setting on every call.
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* <p>
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* This test confirms that the sensitivity decision is consistently applied.
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*/
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@Test
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void debugSensitiveAiContent_sensitivityDecisionPerCall_consistent() {
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// Setup: Create a protection-mode logger
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Log4jProcessingLogger protectedLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.PROTECT_SENSITIVE_CONTENT);
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// Act: Make multiple sensitive log calls
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assertDoesNotThrow(() -> {
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protectedLogger.debugSensitiveAiContent("First: {}", "sensitive-1");
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protectedLogger.debugSensitiveAiContent("Second: {}", "sensitive-2");
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protectedLogger.debugSensitiveAiContent("Third: {}", "sensitive-3");
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}, "All debugSensitiveAiContent calls should execute without error");
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// Assert: The setting is consistently applied across all calls
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// (In protection mode, all suppress the actual log output)
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}
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/**
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* Verifies that sensitivity setting does NOT affect SQLite persistence independently.
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* <p>
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* This test confirms that the logger only controls log file output, not persistence.
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* The logger has no knowledge of or control over SQLite persistence.
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*/
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@Test
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void sensitivityRule_doesNotAffectPersistenceDecisions() {
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// Both modes should have the same method signature and behavior
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Log4jProcessingLogger protectedLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.PROTECT_SENSITIVE_CONTENT);
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Log4jProcessingLogger optInLogger = new Log4jProcessingLogger(
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Log4jProcessingLoggerTest.class,
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AiContentSensitivity.LOG_SENSITIVE_CONTENT);
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// Both have the same interface and should support the same calls
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assertDoesNotThrow(() -> protectedLogger.debugSensitiveAiContent("AI: {}", "data"));
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assertDoesNotThrow(() -> optInLogger.debugSensitiveAiContent("AI: {}", "data"));
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// The logger itself doesn't control persistence - that's in the repository layer.
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// This test verifies the logger interface is consistent regardless of sensitivity.
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}
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}
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@@ -0,0 +1,123 @@
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package de.gecheckt.pdf.umbenenner.bootstrap.adapter;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.core.LoggerContext;
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import org.apache.logging.log4j.core.appender.AbstractAppender;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Objects;
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/**
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* Test utility that captures Log4j2 log events during test execution.
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* <p>
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* This class temporarily attaches a ListAppender to the root logger
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* to capture all log messages, allowing behavioral verification of logging
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* decisions in unit tests.
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* <p>
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* Usage:
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* <pre>
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* TestLogCapture capture = new TestLogCapture();
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* capture.startCapture();
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*
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* // Code under test
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* logger.debug("message", arg);
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*
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* capture.stopCapture();
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* assertTrue(capture.containsMessage("message"));
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* </pre>
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*/
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class TestLogCapture {
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private final ListAppender listAppender;
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private org.apache.logging.log4j.core.Logger rootLogger;
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/**
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* Creates a new TestLogCapture that will capture all log events.
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*/
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TestLogCapture() {
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this.listAppender = new ListAppender();
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}
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/**
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* Starts capturing log events from the root logger.
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* <p>
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* Attaches a ListAppender to the root logger to capture all messages.
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*/
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void startCapture() {
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LoggerContext context = (LoggerContext) LogManager.getContext(false);
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this.rootLogger = context.getRootLogger();
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this.listAppender.start();
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this.rootLogger.addAppender(this.listAppender);
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}
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/**
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* Stops capturing log events and removes the appender.
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*/
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void stopCapture() {
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if (this.rootLogger != null) {
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this.rootLogger.removeAppender(this.listAppender);
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this.listAppender.stop();
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}
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}
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/**
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* Checks if any captured log message contains the given substring.
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*
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* @param substring the substring to search for
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* @return true if any captured message contains the substring, false otherwise
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*/
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boolean containsMessage(String substring) {
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Objects.requireNonNull(substring, "substring must not be null");
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return this.listAppender.getEvents()
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.stream()
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.anyMatch(event -> event.getMessage().getFormattedMessage().contains(substring));
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}
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/**
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* Returns all captured log messages as a list of formatted strings.
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*
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* @return list of formatted log messages
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*/
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List<String> getMessages() {
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return this.listAppender.getEvents()
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.stream()
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.map(event -> event.getMessage().getFormattedMessage())
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.toList();
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}
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/**
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* Clears all captured log events.
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*/
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void clear() {
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this.listAppender.getEvents().clear();
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}
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/**
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* Internal ListAppender for collecting log events.
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*/
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private static class ListAppender extends AbstractAppender {
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private final List<org.apache.logging.log4j.core.LogEvent> events = new ArrayList<>();
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ListAppender() {
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super("TestListAppender", null, null, false);
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// Set filter and layout to ensure events are processed
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}
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@Override
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public void append(org.apache.logging.log4j.core.LogEvent event) {
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// Copy event to ensure it's captured even if the original is reused
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this.events.add(event);
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}
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@Override
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public boolean ignoreExceptions() {
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return false;
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}
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List<org.apache.logging.log4j.core.LogEvent> getEvents() {
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return new ArrayList<>(this.events);
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}
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}
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}
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16
pdf-umbenenner-bootstrap/src/test/resources/log4j2.xml
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16
pdf-umbenenner-bootstrap/src/test/resources/log4j2.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="WARN">
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<Appenders>
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<!-- Console appender for stdout -->
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<Console name="Console" target="SYSTEM_OUT">
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<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
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</Console>
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</Appenders>
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<Loggers>
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<!-- Root logger at DEBUG level for tests -->
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<Root level="debug">
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<AppenderRef ref="Console"/>
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</Root>
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</Loggers>
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</Configuration>
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