diff --git a/test/test-global-log-level.js b/test/test-global-log-level.js
new file mode 100644
index 0000000..39ea432
--- /dev/null
+++ b/test/test-global-log-level.js
@@ -0,0 +1,85 @@
+var vows = require('vows'),
+assert = require('assert');
+
+vows.describe('log4js global loglevel').addBatch({
+    'global loglevel' : {
+        topic: function() {
+            var log4js = require('../lib/log4js')();
+            return log4js;
+        },
+
+        'set global loglevel on creation': function(log4js) {
+            var log1 = log4js.getLogger('log1');
+            var level = 'OFF';
+            if (log1.level.toString() == level) {
+                level = 'TRACE';
+            }
+            assert.notEqual(log1.level.toString(), level);
+
+            log1.setLevel(level);
+            assert.equal(log1.level.toString(), level);
+
+            var log2 = log4js.getLogger('log2');
+            assert.equal(log2.level.toString(), level);
+        },
+
+        'global change loglevel': function(log4js) {
+            var log1 = log4js.getLogger('log1');
+            var log2 = log4js.getLogger('log2');
+            var level = 'OFF';
+            if (log1.level.toString() == level) {
+                level = 'TRACE';
+            }
+            assert.notEqual(log1.level.toString(), level);
+
+            log1.setLevel(level);
+            assert.equal(log1.level.toString(), level);
+            assert.equal(log2.level.toString(), level);
+        },
+
+        'override loglevel': function(log4js) {
+            var log1 = log4js.getLogger('log1');
+            var log2 = log4js.getLogger('log2');
+            var level = 'OFF';
+            if (log1.level.toString() == level) {
+                level = 'TRACE';
+            }
+            assert.notEqual(log1.level.toString(), level);
+
+            var oldLevel = log1.level.toString();
+            assert.equal(log2.level.toString(), oldLevel);
+
+            log2.setLocalLevel(level);
+            assert.equal(log1.level.toString(), oldLevel);
+            assert.equal(log2.level.toString(), level);
+            assert.notEqual(oldLevel, level);
+
+            log2.removeLocalLevel();
+            assert.equal(log1.level.toString(), oldLevel);
+            assert.equal(log2.level.toString(), oldLevel);
+        },
+
+        'preload loglevevl': function(log4js) {
+            var log1 = log4js.getLogger('log1');
+            var level = 'OFF';
+            if (log1.level.toString() == level) {
+                level = 'TRACE';
+            }
+            assert.notEqual(log1.level.toString(), level);
+
+            var oldLevel = log1.level.toString();
+            log4js.getLogger('log2').setLocalLevel(level);
+
+            assert.equal(log1.level.toString(), oldLevel);
+
+            // get again same logger but as different variable
+            var log2 = log4js.getLogger('log2');
+            assert.equal(log2.level.toString(), level);
+            assert.notEqual(oldLevel, level);
+
+            log2.removeLocalLevel();
+            assert.equal(log1.level.toString(), oldLevel);
+            assert.equal(log2.level.toString(), oldLevel);
+        }
+    }
+}).export(module);