fix win newline issue

src/test2ref/__init__.py

@@ -225,7 +225,7 @@ def assert_paths(ref_path: Path, gen_path: Path, excludes: Iterable[str] | None
     """
     diff_excludes: Excludes = (*CONFIG["excludes"], *(excludes or []))
     try:
-        cmd = ["diff", "-ru", str(ref_path), str(gen_path)]
+        cmd = ["diff", "-ru", "--strip-trailing-cr", str(ref_path), str(gen_path)]
         for exclude in diff_excludes:
             cmd.extend(("--exclude", exclude))
         subprocess.run(cmd, check=True, capture_output=True)  # noqa: S603

tests/test_main.py

@@ -345,3 +345,32 @@ def test_regex(tmp_path):
 Hello PLANET 3
 """
     )
+
+
+OPEN_NEWLINES = (
+    None,  # System Default
+    "",  # no translation
+    "\n",  # no translation
+    "\r\n",  # windows
+)
+
+
+@mark.parametrize("gen", OPEN_NEWLINES)
+@mark.parametrize("ref", OPEN_NEWLINES)
+def test_newline(tmp_path, gen, ref):
+    """No newline sensitivity."""
+    ref_path = tmp_path / "ref"
+    gen_path = tmp_path / "gen"
+    ref_path.mkdir()
+    gen_path.mkdir()
+
+    with (gen_path / "file.txt").open("w", newline=gen) as file:
+        file.write("line0\n")
+        file.write("line1\n")
+
+    with (ref_path / "file.txt").open("w", newline=ref) as file:
+        file.write("line0\n")
+        file.write("line1\n")
+
+    configure(ref_update=False, ref_path=ref_path)
+    assert_refdata(ref_path, gen_path)