diff --git a/tests/test_footnotes.py b/tests/test_footnotes.py
index 6a6a4906..05519c22 100644
--- a/tests/test_footnotes.py
+++ b/tests/test_footnotes.py
@@ -47,11 +47,38 @@
 
 
 def test_empty():
+    """Test if an empty MkFootNotes object produces an empty string representation.
+    
+    Args:
+        None
+    
+    Returns:
+        None: This test method doesn't return a value, it uses assertions.
+    
+    Raises:
+        AssertionError: If the string representation of an empty MkFootNotes object is not empty.
+    """
     annotation = mk.MkFootNotes()
     assert not str(annotation)
 
 
 def test_if_annotations_get_sorted():
+    """Tests if annotations in MkFootNotes are sorted correctly.
+    
+    This method creates an instance of MkFootNotes, adds footnotes with
+    out-of-order keys, and checks if the string representation is sorted
+    as expected.
+    
+    Args:
+        None
+    
+    Returns:
+        None
+    
+    Raises:
+        AssertionError: If the string representation of the MkFootNotes
+                        instance does not match the expected sorted output.
+    """
     node = mk.MkFootNotes()
     node[2] = "2"
     node[1] = "1"
@@ -59,11 +86,38 @@ def test_if_annotations_get_sorted():
 
 
 def test_markdown():
+    """Test the markdown footnotes functionality.
+    
+    Args:
+        None
+    
+    Returns:
+        None
+    
+    Raises:
+        AssertionError: If the string representation of the MkFootNotes object
+                        does not match the expected output.
+    """
     annotation = mk.MkFootNotes(["abcde\nfghi"] * 10, header="Header")
     assert str(annotation) == EXPECTED
 
 
 def test_constructors():
+    """Tests the constructors of the MkFootNotes class.
+    
+    This method creates two MkFootNotes objects using different constructor
+    approaches and asserts that their string representations are equal.
+    
+    Args:
+        None
+    
+    Returns:
+        None
+    
+    Raises:
+        AssertionError: If the string representations of the two MkFootNotes
+                        objects are not equal.
+    """
     annotation_1 = mk.MkFootNotes(["abc", "def"])
     anns = {1: "abc", 2: "def"}
     annotation_2 = mk.MkFootNotes(anns)
@@ -71,6 +125,22 @@ def test_constructors():
 
 
 def test_mapping_interface():
+    """Tests the mapping interface of the MkFootNotes class.
+    
+    This method creates an instance of MkFootNotes, assigns a value to a key,
+    and asserts that the string representation of the assigned value matches
+    the expected format for a footnote.
+    
+    Args:
+        None
+    
+    Returns:
+        None
+    
+    Raises:
+        AssertionError: If the string representation of the assigned footnote
+                        does not match the expected format.
+    """
     ann = mk.MkFootNotes()
     ann[1] = "test"
     assert str(ann[1]) == "[^1]:\n    test\n"