diff --git a/tests/test_integration.py b/tests/test_integration.py
index 19e4c9f..84abdca 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -7,11 +7,11 @@ from itertools import chain
 ROOT_DIR = os.path.dirname(os.path.abspath(__file__)) + "/../"
 
 TEST_DATA = [
-    ("clean",6, [('Super Potato Book', 0), ('Volume 1', 0), ('Part 1', 0), ('Volume 2', 3), ('Part 2', 3)]),
-    ("keep",6, [('Super Potato Book', 0), ('Volume 1', 0), ('Part 1', 0), ('Chapter 1', 0), ('Chapter 2', 1), ('Scene 1', 1), ('Scene 2', 2), ('Volume 2', 3), ('Part 3', 3), ('Chapter 3', 3), ('Chapter 4', 4), ('Scene 3', 4), ('Scene 4', 5)]),
-    ("flatten", 6, [('Super Potato Book', 0), ('Volume 1', 0), ('Part 1', 0), ('Chapter 1', 0), ('Chapter 2', 1), ('Scene 1', 1), ('Scene 2', 2), ('Volume 2', 3), ('Part 3', 3), ('Chapter 3', 3), ('Chapter 4', 4), ('Scene 3', 4), ('Scene 4', 5)]),
-    ("rotate", 9, [('Super Potato Book', 0), ('Volume 1', 0), ('Part 1', 0), ('Volume 2', 3), ('Part 2', 3), ('Volume 3', 6), ('Part 3', 6)]),
-    ("min",3, [('Part 1', 0), ('Chapter 1', 0), ('Chapter 2', 1), ('Scene 1', 1), ('Scene 2', 2)])
+    ("clean",6, [('Super Potato Book', 0, 0), ('Volume 1', 0, 0), ('Part 1', 0, 1), ('Volume 2', 3, 0), ('Part 2', 3, 1)]),
+    ("keep",6, [('Super Potato Book', 0, 0), ('Volume 1', 0, 0), ('Part 1', 0, 1), ('Chapter 1', 0, 2), ('Chapter 2', 1, 2), ('Scene 1', 1, 3), ('Scene 2', 2, 3), ('Volume 2', 3, 0), ('Part 3', 3, 1), ('Chapter 3', 3, 2), ('Chapter 4', 4, 2), ('Scene 3', 4, 3), ('Scene 4', 5, 3)]),
+    ("flatten", 6, [('Super Potato Book', 0, 0), ('Volume 1', 0, 0), ('Part 1', 0, 1), ('Chapter 1', 0, 2), ('Chapter 2', 1, 2), ('Scene 1', 1, 2), ('Scene 2', 2, 2), ('Volume 2', 3, 0), ('Part 3', 3, 1), ('Chapter 3', 3, 2), ('Chapter 4', 4, 2), ('Scene 3', 4, 2), ('Scene 4', 5, 2)]),
+    ("rotate", 9, [('Super Potato Book', 0, 0), ('Volume 1', 0, 0), ('Part 1', 0, 1), ('Volume 2', 3, 0), ('Part 2', 3, 1), ('Volume 3', 6, 0), ('Part 3', 6, 1)]),
+    ("min",3, [('Part 1', 0, 0), ('Chapter 1', 0, 1), ('Chapter 2', 1, 1), ('Scene 1', 1, 2), ('Scene 2', 2, 2)])
 ]
 
 def pdf_name(name):
@@ -26,24 +26,25 @@ def render(name):
     os.chdir(ROOT_DIR)
     return pdf_name(name)
 
-def flatten_bookmarks(bookmarks):
+def flatten_bookmarks(bookmarks, level=0):
     """Given a list, possibly nested to any level, return it flattened."""
     output = []
     for destination in bookmarks:
         if type(destination) == type([]):
-            output.extend(flatten_bookmarks(destination))
+            output.extend(flatten_bookmarks(destination, level+1))
         else:
-            output.append(destination)
+            output.append((destination, level))
     return output
 
 def get_all_bookmarks(pdf):
-    """ Returns a list of all flattened bookmarks with title and page number in a PDF file"""
-    return [(d['/Title'], pdf.getDestinationPageNumber(d)) for d in flatten_bookmarks(pdf.getOutlines())]
+    """ Returns a list of all bookmarks with title, page number, and level in a PDF file"""
+    bookmarks = flatten_bookmarks(pdf.getOutlines())
+    return [(d[0]['/Title'], pdf.getDestinationPageNumber(d[0]), d[1]) for d in bookmarks]
 
 @pytest.mark.parametrize("name,pages,bookmarks", TEST_DATA)
 def test_book(name, pages, bookmarks):
     output_file = render(name)
     pdf = PyPDF3.PdfFileReader(output_file)
-    assert pdf.getNumPages() == pages
-    assert get_all_bookmarks(pdf) == bookmarks
+    assert pages == pdf.getNumPages()
+    assert bookmarks == get_all_bookmarks(pdf)