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263 lines
9.1 KiB
263 lines
9.1 KiB
import os |
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import PIL |
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import pytest |
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from PIL import Image |
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from sigal import init_logging |
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from sigal.image import (generate_image, generate_thumbnail, get_exif_tags, |
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get_exif_data, get_size, process_image, get_iptc_data) |
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from sigal.settings import create_settings, Status |
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CURRENT_DIR = os.path.dirname(__file__) |
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TEST_IMAGE = 'KeckObservatory20071020.jpg' |
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SRCFILE = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir2', TEST_IMAGE) |
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TEST_GIF_IMAGE = 'example.gif' |
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SRC_GIF_FILE = os.path.join(CURRENT_DIR, 'sample', 'pictures', |
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'dir1', 'test1', TEST_GIF_IMAGE) |
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def test_process_image(tmpdir): |
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"Test the process_image function." |
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status = process_image('foo.txt', 'none.txt', {}) |
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assert status == Status.FAILURE |
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settings = create_settings(img_processor='ResizeToFill', make_thumbs=False) |
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status = process_image(SRCFILE, str(tmpdir), settings) |
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assert status == Status.SUCCESS |
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im = Image.open(os.path.join(str(tmpdir), TEST_IMAGE)) |
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assert im.size == settings['img_size'] |
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def test_generate_image(tmpdir): |
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"Test the generate_image function." |
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dstfile = str(tmpdir.join(TEST_IMAGE)) |
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for i, size in enumerate([(600, 600), (300, 200)]): |
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settings = create_settings(img_size=size, img_processor='ResizeToFill', |
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copy_exif_data=True) |
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options = None if i == 0 else {'quality': 85} |
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generate_image(SRCFILE, dstfile, settings, options=options) |
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im = Image.open(dstfile) |
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assert im.size == size |
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def test_resize_image_portrait(tmpdir): |
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"""Test that the area is the same regardless of aspect ratio.""" |
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size = (300, 200) |
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settings = create_settings(img_size=size) |
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portrait_image = 'm57_the_ring_nebula-587px.jpg' |
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portrait_src = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir2', portrait_image) |
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portrait_dst = str(tmpdir.join(portrait_image)) |
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generate_image(portrait_src, portrait_dst, settings) |
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im = Image.open(portrait_dst) |
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# In the default mode, PILKit resizes in a way to never make an image |
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# smaller than either of the lengths, the other is scaled accordingly. |
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# Hence we test that the shorter side has the smallest length. |
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assert im.size[0] == 200 |
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landscape_image = 'KeckObservatory20071020.jpg' |
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landscape_src = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir2', landscape_image) |
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landscape_dst = str(tmpdir.join(landscape_image)) |
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generate_image(landscape_src, landscape_dst, settings) |
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im = Image.open(landscape_dst) |
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assert im.size[1] == 200 |
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@pytest.mark.parametrize(("image", "path"), [(TEST_IMAGE, SRCFILE), |
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(TEST_GIF_IMAGE, SRC_GIF_FILE)]) |
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def test_generate_image_passthrough(tmpdir, image, path): |
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"Test the generate_image function with use_orig=True." |
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dstfile = str(tmpdir.join(image)) |
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settings = create_settings(use_orig=True) |
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generate_image(path, dstfile, settings) |
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# Check the file was copied, not (sym)linked |
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st_src = os.stat(path) |
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st_dst = os.stat(dstfile) |
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assert st_src.st_size == st_dst.st_size |
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assert not os.path.samestat(st_src, st_dst) |
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def test_generate_image_passthrough_symlink(tmpdir): |
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"Test the generate_image function with use_orig=True and orig_link=True." |
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dstfile = str(tmpdir.join(TEST_IMAGE)) |
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settings = create_settings(use_orig=True, orig_link=True) |
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generate_image(SRCFILE, dstfile, settings) |
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# Check the file was symlinked |
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assert os.path.islink(dstfile) |
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assert os.path.samefile(SRCFILE, dstfile) |
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def test_generate_image_processor(tmpdir): |
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"Test generate_image with a wrong processor name." |
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init_logging('sigal') |
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dstfile = str(tmpdir.join(TEST_IMAGE)) |
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settings = create_settings(img_size=(200, 200), |
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img_processor='WrongMethod') |
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with pytest.raises(SystemExit): |
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generate_image(SRCFILE, dstfile, settings) |
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@pytest.mark.parametrize( |
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("image", "path", "wide_size", "high_size"), |
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[(TEST_IMAGE, SRCFILE, (200, 133), (150, 100)), |
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(TEST_GIF_IMAGE, SRC_GIF_FILE, (134, 150), (150, 167))]) |
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def test_generate_thumbnail(tmpdir, image, path, wide_size, high_size): |
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"Test the generate_thumbnail function." |
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dstfile = str(tmpdir.join(image)) |
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for size in [(200, 150), (150, 200)]: |
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generate_thumbnail(path, dstfile, size) |
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im = Image.open(dstfile) |
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assert im.size == size |
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for size, thumb_size in [((200, 150), wide_size), |
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((150, 200), high_size)]: |
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generate_thumbnail(path, dstfile, size, fit=False) |
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im = Image.open(dstfile) |
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assert im.size == thumb_size |
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def test_get_exif_tags(): |
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test_image = '11.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', |
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test_image) |
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data = get_exif_data(src_file) |
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simple = get_exif_tags(data, datetime_format='%d/%m/%Y') |
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assert simple['fstop'] == 3.9 |
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assert simple['focal'] == 12.0 |
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assert simple['iso'] == 50 |
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assert simple['Make'] == 'NIKON' |
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assert simple['datetime'] == '22/01/2006' |
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if PIL.PILLOW_VERSION == '3.0.0': |
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assert simple['exposure'] == 0.00100603 |
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else: |
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assert simple['exposure'] == '100603/100000000' |
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data = {'FNumber': [1, 0], 'FocalLength': [1, 0], 'ExposureTime': 10} |
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simple = get_exif_tags(data) |
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assert 'fstop' not in simple |
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assert 'focal' not in simple |
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assert simple['exposure'] == '10' |
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data = {'ExposureTime': '--', 'DateTimeOriginal': '---', |
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'GPSInfo': {'GPSLatitude': ((34, 0), (1, 0), (4500, 100)), |
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'GPSLatitudeRef': 'N', |
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'GPSLongitude': ((116, 0), (8, 0), (3900, 100)), |
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'GPSLongitudeRef': 'W'}} |
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simple = get_exif_tags(data) |
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assert 'exposure' not in simple |
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assert 'datetime' not in simple |
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assert 'gps' not in simple |
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def test_get_iptc_data(): |
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test_image = '1.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'iptcTest', |
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test_image) |
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data = get_iptc_data(src_file) |
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# Title |
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assert data["title"] == 'Haemostratulus clouds over Canberra - ' + \ |
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'2005-12-28 at 03-25-07' |
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# Description |
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assert data["description"] == '"Haemo" because they look like haemoglobin ' + \ |
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'cells and "stratulus" because I can\'t work out whether ' + \ |
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'they\'re Stratus or Cumulus clouds.\nWe\'re driving down ' + \ |
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'the main drag in Canberra so it\'s Parliament House that ' + \ |
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'you can see at the end of the road.' |
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# This file has no IPTC data |
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test_image = '21.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'exifTest', |
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test_image) |
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assert get_iptc_data(src_file) == {} |
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def test_iso_speed_ratings(): |
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data = {'ISOSpeedRatings': ()} |
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simple = get_exif_tags(data) |
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assert 'iso' not in simple |
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data = {'ISOSpeedRatings': None} |
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simple = get_exif_tags(data) |
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assert 'iso' not in simple |
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data = {'ISOSpeedRatings': 125} |
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simple = get_exif_tags(data) |
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assert 'iso' in simple |
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def test_null_exposure_time(): |
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data = {'ExposureTime': (0, 0)} |
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simple = get_exif_tags(data) |
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assert 'exposure' not in simple |
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def test_exif_copy(tmpdir): |
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"Test if EXIF data can transferred copied to the resized image." |
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test_image = '11.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', |
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test_image) |
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dst_file = str(tmpdir.join(test_image)) |
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settings = create_settings(img_size=(300, 400), copy_exif_data=True) |
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generate_image(src_file, dst_file, settings) |
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simple = get_exif_tags(get_exif_data(dst_file)) |
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assert simple['iso'] == 50 |
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settings['copy_exif_data'] = False |
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generate_image(src_file, dst_file, settings) |
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simple = get_exif_tags(get_exif_data(dst_file)) |
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assert not simple |
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@pytest.mark.xfail(PIL.PILLOW_VERSION == '3.0.0', |
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reason="Pillow 3.0.0 was broken") |
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def test_exif_gps(tmpdir): |
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"""Test reading out correct geo tags""" |
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test_image = 'flickr_jerquiaga_2394751088_cc-by-nc.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', |
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test_image) |
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dst_file = str(tmpdir.join(test_image)) |
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settings = create_settings(img_size=(400, 300), copy_exif_data=True) |
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generate_image(src_file, dst_file, settings) |
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simple = get_exif_tags(get_exif_data(dst_file)) |
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assert 'gps' in simple |
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lat = 34.029167 |
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lon = -116.144167 |
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assert abs(simple['gps']['lat'] - lat) < 0.0001 |
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assert abs(simple['gps']['lon'] - lon) < 0.0001 |
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def test_get_size(tmpdir): |
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"""Test reading out image size""" |
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test_image = 'flickr_jerquiaga_2394751088_cc-by-nc.jpg' |
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src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', |
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test_image) |
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result = get_size(src_file) |
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assert result == {'height': 800, 'width': 600} |
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def test_get_size_with_invalid_path(tmpdir): |
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"""Test reading out image size with a missing file""" |
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test_image = 'missing-file.jpg' |
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src_file = os.path.join(CURRENT_DIR, test_image) |
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result = get_size(src_file) |
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assert result is None
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