Pillow/Tests/test_file_tiff.py

from __future__ import annotations

import os
import warnings
from collections.abc import Generator
from io import BytesIO
from pathlib import Path
from types import ModuleType

import pytest

from PIL import Image, ImageFile, TiffImagePlugin, UnidentifiedImageError
from PIL.TiffImagePlugin import RESOLUTION_UNIT, X_RESOLUTION, Y_RESOLUTION

from .helper import (
    assert_image_equal,
    assert_image_equal_tofile,
    assert_image_similar,
    assert_image_similar_tofile,
    hopper,
    is_pypy,
    is_win32,
)

ElementTree: ModuleType | None
try:
    from defusedxml import ElementTree
except ImportError:
    ElementTree = None


class TestFileTiff:
    def test_sanity(self, tmp_path: Path) -> None:
        filename = str(tmp_path / "temp.tif")

        hopper("RGB").save(filename)

        with Image.open(filename) as im:
            im.load()
        assert im.mode == "RGB"
        assert im.size == (128, 128)
        assert im.format == "TIFF"

        hopper("1").save(filename)
        with Image.open(filename):
            pass

        hopper("L").save(filename)
        with Image.open(filename):
            pass

        hopper("P").save(filename)
        with Image.open(filename):
            pass

        hopper("RGB").save(filename)
        with Image.open(filename):
            pass

        hopper("I").save(filename)
        with Image.open(filename):
            pass

    @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
    def test_unclosed_file(self) -> None:
        def open() -> None:
            im = Image.open("Tests/images/multipage.tiff")
            im.load()

        with pytest.warns(ResourceWarning):
            open()

    def test_closed_file(self) -> None:
        with warnings.catch_warnings():
            im = Image.open("Tests/images/multipage.tiff")
            im.load()
            im.close()

    def test_seek_after_close(self) -> None:
        im = Image.open("Tests/images/multipage.tiff")
        assert isinstance(im, TiffImagePlugin.TiffImageFile)
        im.close()

        with pytest.raises(ValueError):
            im.n_frames
        with pytest.raises(ValueError):
            im.seek(1)

    def test_context_manager(self) -> None:
        with warnings.catch_warnings():
            with Image.open("Tests/images/multipage.tiff") as im:
                im.load()

    def test_mac_tiff(self) -> None:
        # Read RGBa images from macOS [@PIL136]

        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            assert im.mode == "RGBA"
            assert im.size == (55, 43)
            assert im.tile == [("raw", (0, 0, 55, 43), 8, ("RGBa", 0, 1))]
            im.load()

            assert_image_similar_tofile(im, "Tests/images/pil136.png", 1)

    def test_bigtiff(self, tmp_path: Path) -> None:
        with Image.open("Tests/images/hopper_bigtiff.tif") as im:
            assert_image_equal_tofile(im, "Tests/images/hopper.tif")

        with Image.open("Tests/images/hopper_bigtiff.tif") as im:
            # multistrip support not yet implemented
            del im.tag_v2[273]

            outfile = str(tmp_path / "temp.tif")
            im.save(outfile, save_all=True, append_images=[im], tiffinfo=im.tag_v2)

    def test_seek_too_large(self) -> None:
        with pytest.raises(ValueError, match="Unable to seek to frame"):
            Image.open("Tests/images/seek_too_large.tif")

    def test_set_legacy_api(self) -> None:
        ifd = TiffImagePlugin.ImageFileDirectory_v2()
        with pytest.raises(Exception) as e:
            ifd.legacy_api = False
        assert str(e.value) == "Not allowing setting of legacy api"

    def test_xyres_tiff(self) -> None:
        filename = "Tests/images/pil168.tif"
        with Image.open(filename) as im:
            # legacy api
            assert isinstance(im.tag[X_RESOLUTION][0], tuple)
            assert isinstance(im.tag[Y_RESOLUTION][0], tuple)

            # v2 api
            assert isinstance(im.tag_v2[X_RESOLUTION], TiffImagePlugin.IFDRational)
            assert isinstance(im.tag_v2[Y_RESOLUTION], TiffImagePlugin.IFDRational)

            assert im.info["dpi"] == (72.0, 72.0)

    def test_xyres_fallback_tiff(self) -> None:
        filename = "Tests/images/compression.tif"
        with Image.open(filename) as im:
            # v2 api
            assert isinstance(im.tag_v2[X_RESOLUTION], TiffImagePlugin.IFDRational)
            assert isinstance(im.tag_v2[Y_RESOLUTION], TiffImagePlugin.IFDRational)
            with pytest.raises(KeyError):
                im.tag_v2[RESOLUTION_UNIT]

            # Legacy.
            assert im.info["resolution"] == (100.0, 100.0)
            # Fallback "inch".
            assert im.info["dpi"] == (100.0, 100.0)

    def test_int_resolution(self) -> None:
        filename = "Tests/images/pil168.tif"
        with Image.open(filename) as im:
            # Try to read a file where X,Y_RESOLUTION are ints
            im.tag_v2[X_RESOLUTION] = 71
            im.tag_v2[Y_RESOLUTION] = 71
            im._setup()
            assert im.info["dpi"] == (71.0, 71.0)

    @pytest.mark.parametrize(
        "resolution_unit, dpi",
        [(None, 72.8), (2, 72.8), (3, 184.912)],
    )
    def test_load_float_dpi(self, resolution_unit: int | None, dpi: float) -> None:
        with Image.open(
            "Tests/images/hopper_float_dpi_" + str(resolution_unit) + ".tif"
        ) as im:
            assert im.tag_v2.get(RESOLUTION_UNIT) == resolution_unit
            assert im.info["dpi"] == (dpi, dpi)

    def test_save_float_dpi(self, tmp_path: Path) -> None:
        outfile = str(tmp_path / "temp.tif")
        with Image.open("Tests/images/hopper.tif") as im:
            dpi = (72.2, 72.2)
            im.save(outfile, dpi=dpi)

            with Image.open(outfile) as reloaded:
                assert reloaded.info["dpi"] == dpi

    def test_save_setting_missing_resolution(self) -> None:
        b = BytesIO()
        with Image.open("Tests/images/10ct_32bit_128.tiff") as im:
            im.save(b, format="tiff", resolution=123.45)
        with Image.open(b) as im:
            assert im.tag_v2[X_RESOLUTION] == 123.45
            assert im.tag_v2[Y_RESOLUTION] == 123.45

    def test_invalid_file(self) -> None:
        invalid_file = "Tests/images/flower.jpg"

        with pytest.raises(SyntaxError):
            TiffImagePlugin.TiffImageFile(invalid_file)

        TiffImagePlugin.PREFIXES.append(b"\xff\xd8\xff\xe0")
        with pytest.raises(SyntaxError):
            TiffImagePlugin.TiffImageFile(invalid_file)
        TiffImagePlugin.PREFIXES.pop()

    def test_bad_exif(self) -> None:
        with Image.open("Tests/images/hopper_bad_exif.jpg") as i:
            # Should not raise struct.error.
            with pytest.warns(UserWarning):
                i._getexif()

    def test_save_rgba(self, tmp_path: Path) -> None:
        im = hopper("RGBA")
        outfile = str(tmp_path / "temp.tif")
        im.save(outfile)

    def test_save_unsupported_mode(self, tmp_path: Path) -> None:
        im = hopper("HSV")
        outfile = str(tmp_path / "temp.tif")
        with pytest.raises(OSError):
            im.save(outfile)

    def test_8bit_s(self) -> None:
        with Image.open("Tests/images/8bit.s.tif") as im:
            im.load()
            assert im.mode == "L"
            assert im.getpixel((50, 50)) == 184

    def test_little_endian(self) -> None:
        with Image.open("Tests/images/16bit.cropped.tif") as im:
            assert im.getpixel((0, 0)) == 480
            assert im.mode == "I;16"

            b = im.tobytes()
        # Bytes are in image native order (little endian)
        assert b[0] == ord(b"\xe0")
        assert b[1] == ord(b"\x01")

    def test_big_endian(self) -> None:
        with Image.open("Tests/images/16bit.MM.cropped.tif") as im:
            assert im.getpixel((0, 0)) == 480
            assert im.mode == "I;16B"

            b = im.tobytes()
        # Bytes are in image native order (big endian)
        assert b[0] == ord(b"\x01")
        assert b[1] == ord(b"\xe0")

    def test_16bit_r(self) -> None:
        with Image.open("Tests/images/16bit.r.tif") as im:
            assert im.getpixel((0, 0)) == 480
            assert im.mode == "I;16"

            b = im.tobytes()
        assert b[0] == ord(b"\xe0")
        assert b[1] == ord(b"\x01")

    def test_16bit_s(self) -> None:
        with Image.open("Tests/images/16bit.s.tif") as im:
            im.load()
            assert im.mode == "I"
            assert im.getpixel((0, 0)) == 32767
            assert im.getpixel((0, 1)) == 0

    def test_12bit_rawmode(self) -> None:
        """Are we generating the same interpretation
        of the image as Imagemagick is?"""

        with Image.open("Tests/images/12bit.cropped.tif") as im:
            # to make the target --
            # convert 12bit.cropped.tif -depth 16 tmp.tif
            # convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
            # imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
            # so we need to unshift so that the integer values are the same.

            assert_image_equal_tofile(im, "Tests/images/12in16bit.tif")

    def test_32bit_float(self) -> None:
        # Issue 614, specific 32-bit float format
        path = "Tests/images/10ct_32bit_128.tiff"
        with Image.open(path) as im:
            im.load()

            assert im.getpixel((0, 0)) == -0.4526388943195343
            assert im.getextrema() == (-3.140936851501465, 3.140684127807617)

    def test_unknown_pixel_mode(self) -> None:
        with pytest.raises(OSError):
            with Image.open("Tests/images/hopper_unknown_pixel_mode.tif"):
                pass

    @pytest.mark.parametrize(
        "path, n_frames",
        (
            ("Tests/images/multipage-lastframe.tif", 1),
            ("Tests/images/multipage.tiff", 3),
        ),
    )
    def test_n_frames(self, path: str, n_frames: int) -> None:
        with Image.open(path) as im:
            assert im.n_frames == n_frames
            assert im.is_animated == (n_frames != 1)

    def test_eoferror(self) -> None:
        with Image.open("Tests/images/multipage-lastframe.tif") as im:
            n_frames = im.n_frames

            # Test seeking past the last frame
            with pytest.raises(EOFError):
                im.seek(n_frames)
            assert im.tell() < n_frames

            # Test that seeking to the last frame does not raise an error
            im.seek(n_frames - 1)

    def test_multipage(self) -> None:
        # issue #862
        with Image.open("Tests/images/multipage.tiff") as im:
            # file is a multipage tiff: 10x10 green, 10x10 red, 20x20 blue

            im.seek(0)
            assert im.size == (10, 10)
            assert im.convert("RGB").getpixel((0, 0)) == (0, 128, 0)

            im.seek(1)
            im.load()
            assert im.size == (10, 10)
            assert im.convert("RGB").getpixel((0, 0)) == (255, 0, 0)

            im.seek(0)
            im.load()
            assert im.size == (10, 10)
            assert im.convert("RGB").getpixel((0, 0)) == (0, 128, 0)

            im.seek(2)
            im.load()
            assert im.size == (20, 20)
            assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)

    def test_multipage_last_frame(self) -> None:
        with Image.open("Tests/images/multipage-lastframe.tif") as im:
            im.load()
            assert im.size == (20, 20)
            assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)

    def test_frame_order(self) -> None:
        # A frame can't progress to itself after reading
        with Image.open("Tests/images/multipage_single_frame_loop.tiff") as im:
            assert im.n_frames == 1

        # A frame can't progress to a frame that has already been read
        with Image.open("Tests/images/multipage_multiple_frame_loop.tiff") as im:
            assert im.n_frames == 2

        # Frames don't have to be in sequence
        with Image.open("Tests/images/multipage_out_of_order.tiff") as im:
            assert im.n_frames == 3

    def test___str__(self) -> None:
        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            # Act
            ret = str(im.ifd)

            # Assert
            assert isinstance(ret, str)

    def test_dict(self) -> None:
        # Arrange
        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            # v2 interface
            v2_tags = {
                256: 55,
                257: 43,
                258: (8, 8, 8, 8),
                259: 1,
                262: 2,
                296: 2,
                273: (8,),
                338: (1,),
                277: 4,
                279: (9460,),
                282: 72.0,
                283: 72.0,
                284: 1,
            }
            assert dict(im.tag_v2) == v2_tags

            # legacy interface
            legacy_tags = {
                256: (55,),
                257: (43,),
                258: (8, 8, 8, 8),
                259: (1,),
                262: (2,),
                296: (2,),
                273: (8,),
                338: (1,),
                277: (4,),
                279: (9460,),
                282: ((720000, 10000),),
                283: ((720000, 10000),),
                284: (1,),
            }
            assert dict(im.tag) == legacy_tags

    def test__delitem__(self) -> None:
        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            len_before = len(dict(im.ifd))
            del im.ifd[256]
            len_after = len(dict(im.ifd))
            assert len_before == len_after + 1

    @pytest.mark.parametrize("legacy_api", (False, True))
    def test_load_byte(self, legacy_api: bool) -> None:
        ifd = TiffImagePlugin.ImageFileDirectory_v2()
        data = b"abc"
        ret = ifd.load_byte(data, legacy_api)
        assert ret == b"abc"

    def test_load_string(self) -> None:
        ifd = TiffImagePlugin.ImageFileDirectory_v2()
        data = b"abc\0"
        ret = ifd.load_string(data, False)
        assert ret == "abc"

    def test_load_float(self) -> None:
        ifd = TiffImagePlugin.ImageFileDirectory_v2()
        data = b"abcdabcd"
        ret = getattr(ifd, "load_float")(data, False)
        assert ret == (1.6777999408082104e22, 1.6777999408082104e22)

    def test_load_double(self) -> None:
        ifd = TiffImagePlugin.ImageFileDirectory_v2()
        data = b"abcdefghabcdefgh"
        ret = getattr(ifd, "load_double")(data, False)
        assert ret == (8.540883223036124e194, 8.540883223036124e194)

    def test_ifd_tag_type(self) -> None:
        with Image.open("Tests/images/ifd_tag_type.tiff") as im:
            assert 0x8825 in im.tag_v2

    def test_exif(self, tmp_path: Path) -> None:
        def check_exif(exif: Image.Exif) -> None:
            assert sorted(exif.keys()) == [
                256,
                257,
                258,
                259,
                262,
                271,
                272,
                273,
                277,
                278,
                279,
                282,
                283,
                284,
                296,
                297,
                305,
                339,
                700,
                34665,
                34853,
                50735,
            ]
            assert exif[256] == 640
            assert exif[271] == "FLIR"

            gps = exif.get_ifd(0x8825)
            assert list(gps.keys()) == [0, 1, 2, 3, 4, 5, 6, 18]
            assert gps[0] == b"\x03\x02\x00\x00"
            assert gps[18] == "WGS-84"

        outfile = str(tmp_path / "temp.tif")
        with Image.open("Tests/images/ifd_tag_type.tiff") as im:
            exif = im.getexif()
            check_exif(exif)

            im.save(outfile, exif=exif)

        outfile2 = str(tmp_path / "temp2.tif")
        with Image.open(outfile) as im:
            exif = im.getexif()
            check_exif(exif)

            im.save(outfile2, exif=exif.tobytes())

        with Image.open(outfile2) as im:
            exif = im.getexif()
            check_exif(exif)

    def test_modify_exif(self, tmp_path: Path) -> None:
        outfile = str(tmp_path / "temp.tif")
        with Image.open("Tests/images/ifd_tag_type.tiff") as im:
            exif = im.getexif()
            exif[264] = 100

            im.save(outfile, exif=exif)

        with Image.open(outfile) as im:
            exif = im.getexif()
            assert exif[264] == 100

    def test_reload_exif_after_seek(self) -> None:
        with Image.open("Tests/images/multipage.tiff") as im:
            exif = im.getexif()
            del exif[256]
            im.seek(1)

            assert 256 in exif

    def test_exif_frames(self) -> None:
        # Test that EXIF data can change across frames
        with Image.open("Tests/images/g4-multi.tiff") as im:
            assert im.getexif()[273] == (328, 815)

            im.seek(1)
            assert im.getexif()[273] == (1408, 1907)

    @pytest.mark.parametrize("mode", ("1", "L"))
    def test_photometric(self, mode: str, tmp_path: Path) -> None:
        filename = str(tmp_path / "temp.tif")
        im = hopper(mode)
        im.save(filename, tiffinfo={262: 0})
        with Image.open(filename) as reloaded:
            assert reloaded.tag_v2[262] == 0
            assert_image_equal(im, reloaded)

    def test_seek(self) -> None:
        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            im.seek(0)
            assert im.tell() == 0

    def test_seek_eof(self) -> None:
        filename = "Tests/images/pil136.tiff"
        with Image.open(filename) as im:
            assert im.tell() == 0
            with pytest.raises(EOFError):
                im.seek(-1)
            with pytest.raises(EOFError):
                im.seek(1)

    def test__limit_rational_int(self) -> None:
        from PIL.TiffImagePlugin import _limit_rational

        value = 34
        ret = _limit_rational(value, 65536)
        assert ret == (34, 1)

    def test__limit_rational_float(self) -> None:
        from PIL.TiffImagePlugin import _limit_rational

        value = 22.3
        ret = _limit_rational(value, 65536)
        assert ret == (223, 10)

    def test_4bit(self) -> None:
        test_file = "Tests/images/hopper_gray_4bpp.tif"
        original = hopper("L")
        with Image.open(test_file) as im:
            assert im.size == (128, 128)
            assert im.mode == "L"
            assert_image_similar(im, original, 7.3)

    def test_gray_semibyte_per_pixel(self) -> None:
        test_files = (
            (
                24.8,  # epsilon
                (  # group
                    "Tests/images/tiff_gray_2_4_bpp/hopper2.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper2I.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper2R.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper2IR.tif",
                ),
            ),
            (
                7.3,  # epsilon
                (  # group
                    "Tests/images/tiff_gray_2_4_bpp/hopper4.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper4I.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper4R.tif",
                    "Tests/images/tiff_gray_2_4_bpp/hopper4IR.tif",
                ),
            ),
        )
        original = hopper("L")
        for epsilon, group in test_files:
            with Image.open(group[0]) as im:
                assert im.size == (128, 128)
                assert im.mode == "L"
                assert_image_similar(im, original, epsilon)
                for file in group[1:]:
                    with Image.open(file) as im2:
                        assert im2.size == (128, 128)
                        assert im2.mode == "L"
                        assert_image_equal(im, im2)

    def test_with_underscores(self, tmp_path: Path) -> None:
        kwargs = {"resolution_unit": "inch", "x_resolution": 72, "y_resolution": 36}
        filename = str(tmp_path / "temp.tif")
        hopper("RGB").save(filename, "TIFF", **kwargs)
        with Image.open(filename) as im:
            # legacy interface
            assert im.tag[X_RESOLUTION][0][0] == 72
            assert im.tag[Y_RESOLUTION][0][0] == 36

            # v2 interface
            assert im.tag_v2[X_RESOLUTION] == 72
            assert im.tag_v2[Y_RESOLUTION] == 36

    def test_roundtrip_tiff_uint16(self, tmp_path: Path) -> None:
        # Test an image of all '0' values
        pixel_value = 0x1234
        infile = "Tests/images/uint16_1_4660.tif"
        with Image.open(infile) as im:
            assert im.getpixel((0, 0)) == pixel_value

            tmpfile = str(tmp_path / "temp.tif")
            im.save(tmpfile)

            assert_image_equal_tofile(im, tmpfile)

    def test_iptc(self, tmp_path: Path) -> None:
        # Do not preserve IPTC_NAA_CHUNK by default if type is LONG
        outfile = str(tmp_path / "temp.tif")
        with Image.open("Tests/images/hopper.tif") as im:
            im.load()
            assert isinstance(im, TiffImagePlugin.TiffImageFile)
            ifd = TiffImagePlugin.ImageFileDirectory_v2()
            ifd[33723] = 1
            ifd.tagtype[33723] = 4
            im.tag_v2 = ifd
            im.save(outfile)

        with Image.open(outfile) as im:
            assert isinstance(im, TiffImagePlugin.TiffImageFile)
            assert 33723 not in im.tag_v2

    def test_rowsperstrip(self, tmp_path: Path) -> None:
        outfile = str(tmp_path / "temp.tif")
        im = hopper()
        im.save(outfile, tiffinfo={278: 256})

        with Image.open(outfile) as im:
            assert isinstance(im, TiffImagePlugin.TiffImageFile)
            assert im.tag_v2[278] == 256

    def test_strip_raw(self) -> None:
        infile = "Tests/images/tiff_strip_raw.tif"
        with Image.open(infile) as im:
            assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")

    def test_strip_planar_raw(self) -> None:
        # gdal_translate -of GTiff -co INTERLEAVE=BAND \
        # tiff_strip_raw.tif tiff_strip_planar_raw.tiff
        infile = "Tests/images/tiff_strip_planar_raw.tif"
        with Image.open(infile) as im:
            assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")

    def test_strip_planar_raw_with_overviews(self) -> None:
        # gdaladdo tiff_strip_planar_raw2.tif 2 4 8 16
        infile = "Tests/images/tiff_strip_planar_raw_with_overviews.tif"
        with Image.open(infile) as im:
            assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")

    def test_tiled_planar_raw(self) -> None:
        # gdal_translate -of GTiff -co TILED=YES -co BLOCKXSIZE=32 \
        # -co BLOCKYSIZE=32 -co INTERLEAVE=BAND \
        # tiff_tiled_raw.tif tiff_tiled_planar_raw.tiff
        infile = "Tests/images/tiff_tiled_planar_raw.tif"
        with Image.open(infile) as im:
            assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")

    def test_planar_configuration_save(self, tmp_path: Path) -> None:
        infile = "Tests/images/tiff_tiled_planar_raw.tif"
        with Image.open(infile) as im:
            assert im._planar_configuration == 2

            outfile = str(tmp_path / "temp.tif")
            im.save(outfile)

            with Image.open(outfile) as reloaded:
                assert_image_equal_tofile(reloaded, infile)

    @pytest.mark.parametrize("mode", ("P", "PA"))
    def test_palette(self, mode: str, tmp_path: Path) -> None:
        outfile = str(tmp_path / "temp.tif")

        im = hopper(mode)
        im.save(outfile)

        with Image.open(outfile) as reloaded:
            assert_image_equal(im.convert("RGB"), reloaded.convert("RGB"))

    def test_tiff_save_all(self) -> None:
        mp = BytesIO()
        with Image.open("Tests/images/multipage.tiff") as im:
            im.save(mp, format="tiff", save_all=True)

        mp.seek(0, os.SEEK_SET)
        with Image.open(mp) as im:
            assert im.n_frames == 3

        # Test appending images
        mp = BytesIO()
        im = Image.new("RGB", (100, 100), "#f00")
        ims = [Image.new("RGB", (100, 100), color) for color in ["#0f0", "#00f"]]
        im.copy().save(mp, format="TIFF", save_all=True, append_images=ims)

        mp.seek(0, os.SEEK_SET)
        with Image.open(mp) as reread:
            assert reread.n_frames == 3

        # Test appending using a generator
        def im_generator(ims: list[Image.Image]) -> Generator[Image.Image, None, None]:
            yield from ims

        mp = BytesIO()
        im.save(mp, format="TIFF", save_all=True, append_images=im_generator(ims))

        mp.seek(0, os.SEEK_SET)
        with Image.open(mp) as reread:
            assert reread.n_frames == 3

    def test_saving_icc_profile(self, tmp_path: Path) -> None:
        # Tests saving TIFF with icc_profile set.
        # At the time of writing this will only work for non-compressed tiffs
        # as libtiff does not support embedded ICC profiles,
        # ImageFile._save(..) however does.
        im = Image.new("RGB", (1, 1))
        im.info["icc_profile"] = "Dummy value"

        # Try save-load round trip to make sure both handle icc_profile.
        tmpfile = str(tmp_path / "temp.tif")
        im.save(tmpfile, "TIFF", compression="raw")
        with Image.open(tmpfile) as reloaded:
            assert b"Dummy value" == reloaded.info["icc_profile"]

    def test_save_icc_profile(self, tmp_path: Path) -> None:
        im = hopper()
        assert "icc_profile" not in im.info

        outfile = str(tmp_path / "temp.tif")
        icc_profile = b"Dummy value"
        im.save(outfile, icc_profile=icc_profile)

        with Image.open(outfile) as reloaded:
            assert reloaded.info["icc_profile"] == icc_profile

    def test_save_bmp_compression(self, tmp_path: Path) -> None:
        with Image.open("Tests/images/hopper.bmp") as im:
            assert im.info["compression"] == 0

            outfile = str(tmp_path / "temp.tif")
            im.save(outfile)

    def test_discard_icc_profile(self, tmp_path: Path) -> None:
        outfile = str(tmp_path / "temp.tif")

        with Image.open("Tests/images/icc_profile.png") as im:
            assert "icc_profile" in im.info

            im.save(outfile, icc_profile=None)

        with Image.open(outfile) as reloaded:
            assert "icc_profile" not in reloaded.info

    def test_getxmp(self) -> None:
        with Image.open("Tests/images/lab.tif") as im:
            if ElementTree is None:
                with pytest.warns(
                    UserWarning,
                    match="XMP data cannot be read without defusedxml dependency",
                ):
                    assert im.getxmp() == {}
            else:
                assert "xmp" in im.info
                xmp = im.getxmp()

                description = xmp["xmpmeta"]["RDF"]["Description"]
                assert description[0]["format"] == "image/tiff"
                assert description[3]["BitsPerSample"]["Seq"]["li"] == ["8", "8", "8"]

    def test_get_photoshop_blocks(self) -> None:
        with Image.open("Tests/images/lab.tif") as im:
            assert list(im.get_photoshop_blocks().keys()) == [
                1061,
                1002,
                1005,
                1062,
                1037,
                1049,
                1011,
                1034,
                10000,
                1013,
                1016,
                1032,
                1054,
                1050,
                1064,
                1041,
                1044,
                1036,
                1057,
                4000,
                4001,
            ]

    def test_tiff_chunks(self, tmp_path: Path) -> None:
        tmpfile = str(tmp_path / "temp.tif")

        im = hopper()
        with open(tmpfile, "wb") as fp:
            for y in range(0, 128, 32):
                chunk = im.crop((0, y, 128, y + 32))
                if y == 0:
                    chunk.save(
                        fp,
                        "TIFF",
                        tiffinfo={
                            TiffImagePlugin.IMAGEWIDTH: 128,
                            TiffImagePlugin.IMAGELENGTH: 128,
                        },
                    )
                else:
                    fp.write(chunk.tobytes())

        assert_image_equal_tofile(im, tmpfile)

    def test_close_on_load_exclusive(self, tmp_path: Path) -> None:
        # similar to test_fd_leak, but runs on unixlike os
        tmpfile = str(tmp_path / "temp.tif")

        with Image.open("Tests/images/uint16_1_4660.tif") as im:
            im.save(tmpfile)

        im = Image.open(tmpfile)
        fp = im.fp
        assert not fp.closed
        im.load()
        assert fp.closed

    def test_close_on_load_nonexclusive(self, tmp_path: Path) -> None:
        tmpfile = str(tmp_path / "temp.tif")

        with Image.open("Tests/images/uint16_1_4660.tif") as im:
            im.save(tmpfile)

        with open(tmpfile, "rb") as f:
            im = Image.open(f)
            fp = im.fp
            assert not fp.closed
            im.load()
            assert not fp.closed

    # Ignore this UserWarning which triggers for four tags:
    # "Possibly corrupt EXIF data.  Expecting to read 50404352 bytes but..."
    @pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
    # Ignore this UserWarning:
    @pytest.mark.filterwarnings("ignore:Truncated File Read")
    @pytest.mark.skipif(
        not os.path.exists("Tests/images/string_dimension.tiff"),
        reason="Extra image files not installed",
    )
    def test_string_dimension(self) -> None:
        # Assert that an error is raised if one of the dimensions is a string
        with Image.open("Tests/images/string_dimension.tiff") as im:
            with pytest.raises(OSError):
                im.load()

    @pytest.mark.timeout(6)
    @pytest.mark.filterwarnings("ignore:Truncated File Read")
    def test_timeout(self) -> None:
        with Image.open("Tests/images/timeout-6646305047838720") as im:
            ImageFile.LOAD_TRUNCATED_IMAGES = True
            im.load()
            ImageFile.LOAD_TRUNCATED_IMAGES = False

    @pytest.mark.parametrize(
        "test_file",
        [
            "Tests/images/oom-225817ca0f8c663be7ab4b9e717b02c661e66834.tif",
        ],
    )
    @pytest.mark.timeout(2)
    def test_oom(self, test_file: str) -> None:
        with pytest.raises(UnidentifiedImageError):
            with pytest.warns(UserWarning):
                with Image.open(test_file):
                    pass


@pytest.mark.skipif(not is_win32(), reason="Windows only")
class TestFileTiffW32:
    def test_fd_leak(self, tmp_path: Path) -> None:
        tmpfile = str(tmp_path / "temp.tif")

        # this is an mmaped file.
        with Image.open("Tests/images/uint16_1_4660.tif") as im:
            im.save(tmpfile)

        im = Image.open(tmpfile)
        fp = im.fp
        assert not fp.closed
        with pytest.raises(OSError):
            os.remove(tmpfile)
        im.load()
        assert fp.closed

        # this closes the mmap
        im.close()

        # this should not fail, as load should have closed the file pointer,
        # and close should have closed the mmap
        os.remove(tmpfile)