diff --git a/tests/depth.py b/tests/level.py
similarity index 51%
rename from tests/depth.py
rename to tests/level.py
index 8bd5f40..180efcd 100644
--- a/tests/depth.py
+++ b/tests/level.py
@@ -3,14 +3,14 @@
 import sublime
 import sys
 
-class TestDepth(TestBase):
-    """Test of attributes 'depth'"""
+class TestLevel(TestBase):
+    """Test of attributes 'level'"""
 
     # for debug
     # def tearDown(self):
     #     pass
 
-    depth_text = \
+    level_text = \
 """
 
 <!-- MarkdownTOC {0} -->
@@ -22,61 +22,71 @@ class TestDepth(TestBase):
 ### heading 3
 #### heading 4
 ##### heading 5
+###### heading 6
 """
-    def test_depth_default(self):
-        """Default Depth is 2"""
-        toc_txt = self.commonSetup(self.depth_text.format(''))
-        self.assert_In('- heading 1', toc_txt)
-        self.assert_In('- heading 2', toc_txt)
-        self.assert_NotIn('- heading 3', toc_txt)
-        self.assert_NotIn('- heading 4', toc_txt)
-        self.assert_NotIn('- heading 5', toc_txt)
-
-    def test_depth_0(self):
-        """Depth 0 means no limit"""
-        toc_txt = self.commonSetup(self.depth_text.format('depth=0'))
+    def appear_all_headings(self, toc_txt):
         self.assert_In('- heading 1', toc_txt)
         self.assert_In('- heading 2', toc_txt)
         self.assert_In('- heading 3', toc_txt)
         self.assert_In('- heading 4', toc_txt)
         self.assert_In('- heading 5', toc_txt)
+        self.assert_In('- heading 6', toc_txt)
+    def test_level_default(self):
+        """Default is no limit"""
+        toc_txt = self.commonSetup(self.level_text.format(''))
+        self.appear_all_headings(toc_txt)
 
-    def test_depth_1(self):
-        toc_txt = self.commonSetup(self.depth_text.format('depth=1'))
+    def test_level_1(self):
+        """level="1" shows h1 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1"'))
         self.assert_In('- heading 1', toc_txt)
         self.assert_NotIn('- heading 2', toc_txt)
         self.assert_NotIn('- heading 3', toc_txt)
         self.assert_NotIn('- heading 4', toc_txt)
         self.assert_NotIn('- heading 5', toc_txt)
+        self.assert_NotIn('- heading 6', toc_txt)
 
-    def test_depth_2(self):
-        toc_txt = self.commonSetup(self.depth_text.format('depth=2'))
+    def test_level_1_2(self):
+        """level="1,2" shows h1,h2 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1,2"'))
         self.assert_In('- heading 1', toc_txt)
         self.assert_In('- heading 2', toc_txt)
         self.assert_NotIn('- heading 3', toc_txt)
         self.assert_NotIn('- heading 4', toc_txt)
         self.assert_NotIn('- heading 5', toc_txt)
+        self.assert_NotIn('- heading 6', toc_txt)
 
-    def test_depth_3(self):
-        toc_txt = self.commonSetup(self.depth_text.format('depth=3'))
+    def test_level_1_2_3(self):
+        """level="1,2,3" shows h1,h2,h3 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1,2,3"'))
         self.assert_In('- heading 1', toc_txt)
         self.assert_In('- heading 2', toc_txt)
         self.assert_In('- heading 3', toc_txt)
         self.assert_NotIn('- heading 4', toc_txt)
         self.assert_NotIn('- heading 5', toc_txt)
+        self.assert_NotIn('- heading 6', toc_txt)
 
-    def test_depth_4(self):
-        toc_txt = self.commonSetup(self.depth_text.format('depth=4'))
+    def test_level_1_2_3_4(self):
+        """level="1,2,3,4" shows h1,h2,h3,h4 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1,2,3,4"'))
         self.assert_In('- heading 1', toc_txt)
         self.assert_In('- heading 2', toc_txt)
         self.assert_In('- heading 3', toc_txt)
         self.assert_In('- heading 4', toc_txt)
         self.assert_NotIn('- heading 5', toc_txt)
+        self.assert_NotIn('- heading 6', toc_txt)
 
-    def test_depth_5(self):
-        toc_txt = self.commonSetup(self.depth_text.format('depth=5'))
+    def test_level_1_2_3_4_5(self):
+        """level="1,2,3,4,5" shows h1,h2,h3,h4,h5 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1,2,3,4,5"'))
         self.assert_In('- heading 1', toc_txt)
         self.assert_In('- heading 2', toc_txt)
         self.assert_In('- heading 3', toc_txt)
         self.assert_In('- heading 4', toc_txt)
         self.assert_In('- heading 5', toc_txt)
+        self.assert_NotIn('- heading 6', toc_txt)
+
+    def test_level_1_2_3_4_5_6(self):
+        """level="1,2,3,4,5" shows h1,h2,h3,h4,h5 """
+        toc_txt = self.commonSetup(self.level_text.format('level="1,2,3,4,5,6"'))
+        self.appear_all_headings(toc_txt)