Return ALL_LEVELS in LogbackLogging

Replace dynamic resolution of logging levels with the ALL_LEVELS constant in getSupportedLoggingLevels. Update tests to import ALL_LEVELS, add a test for constant values (PRIORITY and ALL_LEVELS/LOGBACK_LEVELS), and remove redundant assertions from testGetPriority. This simplifies level retrieval and centralizes level definitions for consistency.

Author: mercyblitz

microsphere-logging-logback/src/main/java/io/microsphere/logging/logback/LogbackLogging.java

@@ -63,7 +63,7 @@ public List<String> getLoggerNames() {
 
     @Override
     public Set<String> getSupportedLoggingLevels() {
-        return INSTANCE.resolve(Level.class);
+        return ALL_LEVELS;
     }
 
     @Override

microsphere-logging-logback/src/test/java/io/microsphere/logging/logback/LogbackLoggingTest.java

@@ -27,6 +27,7 @@
 import static io.microsphere.collection.Sets.ofSet;
 import static io.microsphere.lang.Prioritized.NORMAL_PRIORITY;
 import static io.microsphere.logging.LoggerFactory.getLogger;
+import static io.microsphere.logging.logback.LogbackLogging.ALL_LEVELS;
 import static io.microsphere.logging.logback.LogbackLogging.PRIORITY;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
@@ -56,6 +57,13 @@ void setUp() {
         this.logging = new LogbackLogging();
     }
 
+    @Test
+    void testConstants() {
+        assertEquals(0, PRIORITY);
+        assertEquals(NORMAL_PRIORITY, PRIORITY);
+        assertEquals(LOGBACK_LEVELS, ALL_LEVELS);
+    }
+
     @Test
     void testGetLoggerNames() {
         assertFalse(this.logging.getLoggerNames().isEmpty());
@@ -101,8 +109,6 @@ void testGetName() {
 
     @Test
     void testGetPriority() {
-        assertEquals(0, PRIORITY);
-        assertEquals(NORMAL_PRIORITY, PRIORITY);
         assertEquals(PRIORITY, this.logging.getPriority());
     }
 }