1 files changed, 16 insertions, 0 deletions
diff --git a/tests/test_ext_doctest.py b/tests/test_ext_doctest.py
index fec9a44d0..705f6262a 100644
--- a/tests/test_ext_doctest.py
+++ b/tests/test_ext_doctest.py
@@ -9,6 +9,7 @@
     :license: BSD, see LICENSE for details.
 """
 import pytest
+from sphinx.ext.doctest import compare_version
 
 cleanup_called = 0
 
@@ -25,6 +26,21 @@ def test_build(app, status, warning):
     assert cleanup_called == 3, 'testcleanup did not get executed enough times'
 
 
+def test_compare_version():
+    assert compare_version('3.3', '3.4', '<') is True
+    assert compare_version('3.3', '3.2', '<') is False
+    assert compare_version('3.3', '3.4', '<=') is True
+    assert compare_version('3.3', '3.2', '<=') is False
+    assert compare_version('3.3', '3.3', '==') is True
+    assert compare_version('3.3', '3.4', '==') is False
+    assert compare_version('3.3', '3.2', '>=') is True
+    assert compare_version('3.3', '3.4', '>=') is False
+    assert compare_version('3.3', '3.2', '>') is True
+    assert compare_version('3.3', '3.4', '>') is False
+    with pytest.raises(ValueError):
+        compare_version('3.3', '3.4', '+')
+
+
 def cleanup_call():
     global cleanup_called
     cleanup_called += 1