add test to check that Logback SLF4J provider can be activated

Signed-off-by: ceki <[email protected]>

Author: ceki

logback-classic-misc/pom.xml

@@ -18,7 +18,10 @@
 
 
     <dependencies>
-
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
     </dependencies>
 
     <build>

logback-classic-misc/src/test/java/ch/qos/logback/classic/misc/SLF4JServiceProviderTest.java

@@ -0,0 +1,45 @@
+/*
+ * Logback: the reliable, generic, fast and flexible logging framework.
+ * Copyright (C) 1999-2026, QOS.ch. All rights reserved.
+ *
+ * This program and the accompanying materials are dual-licensed under
+ * either the terms of the Eclipse Public License v2.0 as published by
+ * the Eclipse Foundation
+ *
+ *   or (per the licensee's choosing)
+ *
+ * under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation.
+ */
+
+package ch.qos.logback.classic.misc;
+
+import ch.qos.logback.classic.Level;
+import ch.qos.logback.classic.Logger;
+import ch.qos.logback.classic.LoggerContext;
+import org.junit.jupiter.api.Test;
+import org.slf4j.LoggerFactory;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+public class SLF4JServiceProviderTest {
+
+
+    /**
+     * Test that SLF4JServiceProvider mechanism is working.
+     */
+    @Test
+    public void testActivationOfLogbackProvider() {
+        System.setProperty("logback.configurationFile", "logback-minimal.xml");
+        org.slf4j.Logger logger = LoggerFactory.getLogger(SLF4JServiceProviderTest.class);
+
+        LoggerContext loggingContext = (LoggerContext) LoggerFactory.getILoggerFactory();
+        assertNotNull(loggingContext);
+
+        Logger root = loggingContext.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
+        assertEquals(Level.ERROR, root.getLevel());
+
+    }
+
+}

logback-classic-misc/src/test/resources/logback-minimal.xml

@@ -0,0 +1,24 @@
+<!--
+  ~ Logback: the reliable, generic, fast and flexible logging framework.
+  ~ Copyright (C) 1999-2026, QOS.ch. All rights reserved.
+  ~
+  ~ This program and the accompanying materials are dual-licensed under
+  ~ either the terms of the Eclipse Public License v2.0 as published by
+  ~ the Eclipse Foundation
+  ~
+  ~   or (per the licensee's choosing)
+  ~
+  ~ under the terms of the GNU Lesser General Public License version 2.1
+  ~ as published by the Free Software Foundation.
+  -->
+
+<configuration>
+
+    <appender name="LIST" class="ch.qos.logback.core.read.ListAppender"/>
+
+    <root level="ERROR">
+        <appender-ref ref="LIST"/>
+    </root>
+
+
+</configuration>