v2.6.0 (#524)

Co-authored-by: Clément Drouin <clement.drouin@mistral.ai>
Co-authored-by: Clément Sirieix <clement.sirieix@mistral.ai>
Co-authored-by: Gauthier Guinet <43207538+Gguinet@users.noreply.github.com>
Co-authored-by: Kim-Adeline Miguel <kimadeline.miguel@mistral.ai>
Co-authored-by: Michel Thomazo <51709227+michelTho@users.noreply.github.com>
Co-authored-by: Quentin <torroba.q@gmail.com>
Co-authored-by: Simon <80467011+sorgfresser@users.noreply.github.com>
Co-authored-by: Simon Van de Kerckhove <simon.vandekerckhove@mistral.ai>
Co-authored-by: Vincent G <10739306+VinceOPS@users.noreply.github.com>
Co-authored-by: angelapopopo <angele.lenglemetz@mistral.ai>
Co-authored-by: Mistral Vibe <vibe@mistral.ai>

tests/core/test_utils.py

@@ -1,8 +1,11 @@
 from __future__ import annotations
 
+from pathlib import Path
+
 import pytest
 
 from vibe.core.utils import get_server_url_from_api_base
+from vibe.core.utils.io import read_safe
 
 
 @pytest.mark.parametrize(
@@ -17,3 +20,45 @@ from vibe.core.utils import get_server_url_from_api_base
 )
 def test_get_server_url_from_api_base(api_base, expected):
     assert get_server_url_from_api_base(api_base) == expected
+
+
+class TestReadSafe:
+    def test_reads_utf8(self, tmp_path: Path) -> None:
+        f = tmp_path / "hello.txt"
+        f.write_text("café\n", encoding="utf-8")
+        assert read_safe(f) == "café\n"
+
+    def test_falls_back_on_non_utf8(self, tmp_path: Path) -> None:
+        f = tmp_path / "latin.txt"
+        # \x81 invalid UTF-8 and undefined in CP1252 → U+FFFD on all platforms
+        f.write_bytes(b"maf\x81\n")
+        result = read_safe(f)
+        assert result == "maf<EFBFBD>\n"
+
+    def test_raise_on_error_true_utf8_succeeds(self, tmp_path: Path) -> None:
+        f = tmp_path / "hello.txt"
+        f.write_text("café\n", encoding="utf-8")
+        assert read_safe(f, raise_on_error=True) == "café\n"
+
+    def test_raise_on_error_true_non_utf8_raises(self, tmp_path: Path) -> None:
+        f = tmp_path / "bad.txt"
+        # Invalid UTF-8; with raise_on_error=True we use default encoding (strict), so decode errors propagate
+        f.write_bytes(b"maf\x81\n")
+        assert read_safe(f, raise_on_error=False) == "maf<EFBFBD>\n"
+        with pytest.raises(UnicodeDecodeError):
+            read_safe(f, raise_on_error=True)
+
+    def test_empty_file(self, tmp_path: Path) -> None:
+        f = tmp_path / "empty.txt"
+        f.write_bytes(b"")
+        assert read_safe(f) == ""
+
+    def test_binary_garbage_does_not_raise(self, tmp_path: Path) -> None:
+        f = tmp_path / "garbage.bin"
+        f.write_bytes(bytes(range(256)))
+        result = read_safe(f)
+        assert isinstance(result, str)
+
+    def test_file_not_found_raises(self, tmp_path: Path) -> None:
+        with pytest.raises(FileNotFoundError):
+            read_safe(tmp_path / "nope.txt")