From 696cb117c92467f122ffa593eb9f1aa336405b80 Mon Sep 17 00:00:00 2001
From: fengguodong <152643312+CodingFeng101@users.noreply.github.com>
Date: Sat, 20 Jun 2026 09:22:25 +0800
Subject: [PATCH 1/3] Reject non-positive date_range steps

---
 dateparser/date.py       |  3 +++
 tests/test_date_range.py | 11 +++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 tests/test_date_range.py

diff --git a/dateparser/date.py b/dateparser/date.py
index 094591707..6149f037d 100644
--- a/dateparser/date.py
+++ b/dateparser/date.py
@@ -77,6 +77,9 @@ def date_range(begin, end, **kwargs):
     step = relativedelta(**kwargs) if kwargs else relativedelta(days=1)
 
     date = begin
+    if date + step <= date:
+        raise ValueError("date_range step must be positive")
+
     while date < end:
         yield date
         date += step
diff --git a/tests/test_date_range.py b/tests/test_date_range.py
new file mode 100644
index 000000000..6f8d8339b
--- /dev/null
+++ b/tests/test_date_range.py
@@ -0,0 +1,11 @@
+from datetime import datetime
+
+import pytest
+
+from dateparser import date
+
+
+@pytest.mark.parametrize("step", [{"months": 0}, {"days": -1}])
+def test_date_range_rejects_steps_that_do_not_advance(step):
+    with pytest.raises(ValueError, match="date_range step must be positive"):
+        next(date.date_range(datetime(2014, 6, 15), datetime(2014, 6, 25), **step))

From 4cbea3af2ff044e94e1961aeafbf335697dd3afc Mon Sep 17 00:00:00 2001
From: codingFeng101 <3524962421@qq.com>
Date: Thu, 25 Jun 2026 20:29:02 +0800
Subject: [PATCH 2/3] Move date_range step test into existing class

---
 tests/test_date.py       | 14 ++++++++++++++
 tests/test_date_range.py | 11 -----------
 2 files changed, 14 insertions(+), 11 deletions(-)
 delete mode 100644 tests/test_date_range.py

diff --git a/tests/test_date.py b/tests/test_date.py
index 7c8759b89..7367b14f1 100644
--- a/tests/test_date.py
+++ b/tests/test_date.py
@@ -86,6 +86,20 @@ def test_should_reject_easily_mistaken_dateutil_arguments(self, invalid_period):
         )
         self.then_period_was_rejected(invalid_period)
 
+    @parameterized.expand(
+        [
+            param(step={"months": 0}),
+            param(step={"days": -1}),
+        ]
+    )
+    def test_should_reject_steps_that_do_not_advance(self, step):
+        with pytest.raises(ValueError, match="date_range step must be positive"):
+            next(
+                date.date_range(
+                    datetime(2014, 6, 15), datetime(2014, 6, 25), **step
+                )
+            )
+
     def when_date_range_generated(self, begin, end, **size):
         try:
             self.result = list(date.date_range(begin, end, **size))
diff --git a/tests/test_date_range.py b/tests/test_date_range.py
deleted file mode 100644
index 6f8d8339b..000000000
--- a/tests/test_date_range.py
+++ /dev/null
@@ -1,11 +0,0 @@
-from datetime import datetime
-
-import pytest
-
-from dateparser import date
-
-
-@pytest.mark.parametrize("step", [{"months": 0}, {"days": -1}])
-def test_date_range_rejects_steps_that_do_not_advance(step):
-    with pytest.raises(ValueError, match="date_range step must be positive"):
-        next(date.date_range(datetime(2014, 6, 15), datetime(2014, 6, 25), **step))

From 1150f2f78779d98ebaab85d2071cebc39f947a68 Mon Sep 17 00:00:00 2001
From: codingFeng101 <3524962421@qq.com>
Date: Fri, 26 Jun 2026 10:47:35 +0800
Subject: [PATCH 3/3] Apply pre-commit formatting to date_range test

---
 tests/test_date.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/tests/test_date.py b/tests/test_date.py
index 7367b14f1..510ec4955 100644
--- a/tests/test_date.py
+++ b/tests/test_date.py
@@ -94,11 +94,7 @@ def test_should_reject_easily_mistaken_dateutil_arguments(self, invalid_period):
     )
     def test_should_reject_steps_that_do_not_advance(self, step):
         with pytest.raises(ValueError, match="date_range step must be positive"):
-            next(
-                date.date_range(
-                    datetime(2014, 6, 15), datetime(2014, 6, 25), **step
-                )
-            )
+            next(date.date_range(datetime(2014, 6, 15), datetime(2014, 6, 25), **step))
 
     def when_date_range_generated(self, begin, end, **size):
         try: