feat(infra): auto-commit con 88 cambios

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

python/functions/cybersecurity/extract_exif_metadata_test.py

@@ -0,0 +1,110 @@
+"""Tests para extract_exif_metadata."""
+
+import os
+import sys
+
+from PIL import Image
+from PIL.ExifTags import Base, GPS, IFD
+from PIL.TiffImagePlugin import IFDRational
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+from cybersecurity.extract_exif_metadata import extract_exif_metadata
+
+
+def _make_png_without_exif(path: str) -> None:
+    """Crea un PNG pequeño sin EXIF."""
+    Image.new("RGB", (4, 4), (10, 20, 30)).save(path, format="PNG")
+
+
+def _make_jpeg_with_exif(path: str) -> None:
+    """Crea un JPEG pequeño con EXIF de camara/software/fecha."""
+    img = Image.new("RGB", (4, 4), (200, 100, 50))
+    exif = img.getexif()
+    exif[Base.Make.value] = "TestCam"
+    exif[Base.Model.value] = "Model X"
+    exif[Base.Software.value] = "PyTestRig 1.0"
+    exif[Base.DateTime.value] = "2024:08:12 19:43:07"
+    # DateTimeOriginal vive en el sub-IFD EXIF.
+    exif_ifd = exif.get_ifd(IFD.Exif)
+    exif_ifd[Base.DateTimeOriginal.value] = "2024:08:12 19:43:07"
+    img.save(path, format="JPEG", exif=exif)
+
+
+def _make_jpeg_with_gps(path: str) -> None:
+    """Crea un JPEG con GPSInfo en DMS, hemisferio sur y oeste."""
+    img = Image.new("RGB", (4, 4), (0, 128, 64))
+    exif = img.getexif()
+    gps_ifd = exif.get_ifd(IFD.GPSInfo)
+    # 40 deg, 25 min, 0.48 seg => 40.41680 grados.
+    gps_ifd[GPS.GPSLatitude.value] = (
+        IFDRational(40, 1),
+        IFDRational(25, 1),
+        IFDRational(48, 100),
+    )
+    gps_ifd[GPS.GPSLatitudeRef.value] = "S"  # hemisferio sur => negativo
+    # 3 deg, 42 min, 13.68 seg => 3.7038 grados.
+    gps_ifd[GPS.GPSLongitude.value] = (
+        IFDRational(3, 1),
+        IFDRational(42, 1),
+        IFDRational(1368, 100),
+    )
+    gps_ifd[GPS.GPSLongitudeRef.value] = "W"  # oeste => negativo
+    img.save(path, format="JPEG", exif=exif)
+
+
+def test_imagen_sin_exif_png_devuelve_none(tmp_path):
+    """imagen sin EXIF (PNG) devuelve campos None y raw vacio."""
+    p = str(tmp_path / "plain.png")
+    _make_png_without_exif(p)
+
+    meta = extract_exif_metadata(p)
+
+    assert meta["datetime"] is None
+    assert meta["camera_make"] is None
+    assert meta["camera_model"] is None
+    assert meta["software"] is None
+    assert meta["gps_lat"] is None
+    assert meta["gps_lon"] is None
+    assert meta["raw"] == {}
+
+
+def test_imagen_con_exif_devuelve_camara_software_fecha(tmp_path):
+    """imagen con EXIF devuelve camara, software y fecha."""
+    p = str(tmp_path / "withexif.jpg")
+    _make_jpeg_with_exif(p)
+
+    meta = extract_exif_metadata(p)
+
+    assert meta["camera_make"] == "TestCam"
+    assert meta["camera_model"] == "Model X"
+    assert meta["software"] == "PyTestRig 1.0"
+    assert meta["datetime"] == "2024:08:12 19:43:07"
+    assert meta["raw"]  # no vacio
+
+
+def test_gps_dms_a_grados_decimales_con_signo(tmp_path):
+    """GPSInfo DMS se convierte a grados decimales con signo por hemisferio."""
+    p = str(tmp_path / "withgps.jpg")
+    _make_jpeg_with_gps(p)
+
+    meta = extract_exif_metadata(p)
+
+    assert meta["gps_lat"] is not None
+    assert meta["gps_lon"] is not None
+    # Sur y Oeste => ambos negativos.
+    assert meta["gps_lat"] < 0
+    assert meta["gps_lon"] < 0
+    assert abs(meta["gps_lat"] - (-40.41680)) < 1e-4
+    assert abs(meta["gps_lon"] - (-3.7038)) < 1e-4
+
+
+if __name__ == "__main__":
+    import tempfile
+    from pathlib import Path
+
+    with tempfile.TemporaryDirectory() as d:
+        test_imagen_sin_exif_png_devuelve_none(Path(d))
+        test_imagen_con_exif_devuelve_camara_software_fecha(Path(d))
+        test_gps_dms_a_grados_decimales_con_signo(Path(d))
+    print("Todos los tests pasaron.")