def test_generate_image(tmpdir):
    "Test the generate_image function."

    dstfile = str(tmpdir.join(TEST_IMAGE))
    for size in [(600, 600), (300, 200)]:
        generate_image(SRCFILE, dstfile, size, None, method='ResizeToFill')
        im = Image.open(dstfile)
        assert im.size == size

def test_generate_image_processor(tmpdir):
    "Test generate_image with a wrong processor name."

    init_logging()
    dstfile = str(tmpdir.join(TEST_IMAGE))
    with pytest.raises(SystemExit):
        generate_image(SRCFILE, dstfile, (200, 200), None,
                       method='WrongMethod')

def test_generate_image_processor(tmpdir):
    "Test generate_image with a wrong processor name."

    init_logging()
    dstfile = str(tmpdir.join(TEST_IMAGE))
    with pytest.raises(SystemExit):
        settings = create_settings(img_size=(200, 200), img_processor="WrongMethod")
        generate_image(SRCFILE, dstfile, settings)

def test_generate_image_passthrough_symlink(tmpdir):
    "Test the generate_image function with use_orig=True and orig_link=True."

    dstfile = str(tmpdir.join(TEST_IMAGE))
    settings = create_settings(use_orig=True, orig_link=True)
    generate_image(SRCFILE, dstfile, settings)
    # Check the file was symlinked
    assert os.path.islink(dstfile)
    assert os.path.samefile(SRCFILE, dstfile)

def test_generate_image(tmpdir):
    "Test the generate_image function."

    dstfile = str(tmpdir.join(TEST_IMAGE))
    for size in [(600, 600), (300, 200)]:
        settings = create_settings(img_size=size, img_processor='ResizeToFill')
        generate_image(SRCFILE, dstfile, settings)
        im = Image.open(dstfile)
        assert im.size == size

def test_generate_image_passthrough(tmpdir, image, path):
    "Test the generate_image function with use_orig=True."

    dstfile = str(tmpdir.join(image))
    settings = create_settings(use_orig=True)
    generate_image(path, dstfile, settings)
    # Check the file was copied, not (sym)linked
    st_src = os.stat(path)
    st_dst = os.stat(dstfile)
    assert st_src.st_size == st_dst.st_size
    assert not os.path.samestat(st_src, st_dst)

def test_generate_image(tmpdir):
    "Test the generate_image function."

    dstfile = str(tmpdir.join(TEST_IMAGE))
    for i, size in enumerate([(600, 600), (300, 200)]):
        settings = create_settings(img_size=size, img_processor='ResizeToFill',
                                   copy_exif_data=True)
        options = None if i == 0 else {'quality': 85}
        generate_image(SRCFILE, dstfile, settings, options=options)
        im = Image.open(dstfile)
        assert im.size == size