diff --git a/tests/test_config.py b/tests/test_config.py
index 0537d528f2672486ace2a27d0804dcf6abf2b640..4fd4d6ac6fcbc9a9f8d897f204f84f4fad1683c6 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -20,6 +20,8 @@ import operator
 import os
 import re
 
+import git
+
 from pathlib import Path
 
 import pytest
@@ -422,3 +424,19 @@ def test_books_loader():
 
 def test_books_loader_without_books():
     assert config_mod.Config().books_loader() is None
+
+def test_books_repo(tmp_path):
+    repo_path = tmp_path / 'books_repo'
+    expected = git.Repo.init(repo_path)
+    config = config_mod.Config()
+    config.load_string(f'[Beancount]\nbooks dir = {repo_path}')
+    assert config.books_repo() == expected
+
+def test_books_repo_no_dir():
+    config = config_mod.Config()
+    assert config.books_repo() is None
+
+def test_books_dir_not_repo():
+    config = config_mod.Config()
+    config.load_string(f'[Beancount]\nbooks dir = {os.devnull}')
+    assert config.books_repo() is None