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"""
Part of the bsie test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# standard imports
import unittest
# bsie imports
from bsie.extractor import base
from bsie.utils import bsfs, node as _node, ns
# objects to test
from bsie.extractor.image.photometrics import Exif, _gps_to_dec
## code ##
class TestExif(unittest.TestCase):
def test_gps_to_dec(self):
# deg+min+sec format
self.assertAlmostEqual(_gps_to_dec('29/1 58/1 45/1'.split()), 29.979167, 6)
self.assertAlmostEqual(_gps_to_dec('31 08 03'.split()), 31.134167, 6)
self.assertAlmostEqual(_gps_to_dec('20 40 586/10'.split()), 20.682944, 6)
self.assertAlmostEqual(_gps_to_dec('88/1 34 68/10'.split()), 88.568556, 6)
# deg+min format
self.assertAlmostEqual(_gps_to_dec('13 472167/10000 0/1 '.split()), 13.786945, 6)
self.assertAlmostEqual(_gps_to_dec('104/1 3215/100 0/1'.split()), 104.535833, 6)
def test_eq(self):
# identical instances are equal
self.assertEqual(Exif(), Exif())
self.assertEqual(hash(Exif()), hash(Exif()))
# comparison respects type
class Foo(): pass
self.assertNotEqual(Exif(), Foo())
self.assertNotEqual(hash(Exif()), hash(Foo()))
self.assertNotEqual(Exif(), 1234)
self.assertNotEqual(hash(Exif()), hash(1234))
self.assertNotEqual(Exif(), None)
self.assertNotEqual(hash(Exif()), hash(None))
def test_schema(self):
self.assertSetEqual({pred.uri for pred in Exif().schema.predicates()}, {
ns.bsfs.Predicate,
ns.bse.exposure,
ns.bse.aperture,
ns.bse.iso,
ns.bse.focal_length,
ns.bse.width,
ns.bse.height,
ns.bse.orientation,
ns.bse.orientation_label,
ns.bse.altitude,
ns.bse.latitude,
ns.bse.longitude,
})
def test_extract(self):
ext = Exif()
node = _node.Node(ns.bsfs.File, '') # Blank node
content = {
'Exif.Photo.ExposureTime': '10/600',
'Exif.Photo.FNumber': '48/10',
'Exif.Photo.ISOSpeedRatings': '400',
'Exif.Photo.FocalLength': '460/10',
'Exif.Photo.PixelXDimension': '4288',
'Exif.Photo.PixelYDimension': '2848',
'Exif.Image.Orientation': '1',
'Exif.GPSInfo.GPSAltitude': '431/1',
'Exif.GPSInfo.GPSLatitude': '46/1 11397/625 0/1',
'Exif.GPSInfo.GPSLongitude': '7/1 131250/2500 0/1',
}
# invalid principals are ignored
self.assertSetEqual(set(ext.extract(node, content, {ns.bse.filename})), set())
# extract finds all relevant information
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.exposure)})),
{(node, ext.schema.predicate(ns.bse.exposure), 60.0)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.aperture)})),
{(node, ext.schema.predicate(ns.bse.aperture), 4.8)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.iso)})),
{(node, ext.schema.predicate(ns.bse.iso), 400)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.focal_length)})),
{(node, ext.schema.predicate(ns.bse.focal_length), 46.0)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.width)})),
{(node, ext.schema.predicate(ns.bse.width), 4288)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.height)})),
{(node, ext.schema.predicate(ns.bse.height), 2848)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.orientation)})),
{(node, ext.schema.predicate(ns.bse.orientation), 1)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.orientation_label)})),
{(node, ext.schema.predicate(ns.bse.orientation_label), 'landscape')})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.altitude)})),
{(node, ext.schema.predicate(ns.bse.altitude), 431.0)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.latitude)})),
{(node, ext.schema.predicate(ns.bse.latitude), 46.30392)})
self.assertSetEqual(set(ext.extract(node, content, {ext.schema.predicate(ns.bse.longitude)})),
{(node, ext.schema.predicate(ns.bse.longitude), 7.875)})
# can pass multiple principals
self.assertSetEqual(set(ext.extract(node, content, {
ext.schema.predicate(ns.bse.exposure),
ext.schema.predicate(ns.bse.iso),
ext.schema.predicate(ns.bse.focal_length),
})), {
(node, ext.schema.predicate(ns.bse.exposure), 60.0),
(node, ext.schema.predicate(ns.bse.iso), 400),
(node, ext.schema.predicate(ns.bse.focal_length), 46.0),
})
# principals w/o content are ignored
self.assertSetEqual(set(ext.extract(
node,
content={'Exif.Photo.ExposureTime': '10/600'},
principals={
ext.schema.predicate(ns.bse.exposure),
ext.schema.predicate(ns.bse.iso),
ext.schema.predicate(ns.bse.focal_length),
})
), {
(node, ext.schema.predicate(ns.bse.exposure), 60.0),
})
# empty content is acceptable
self.assertSetEqual(set(ext.extract(node, {}, set(ext.principals))), set())
# no principals is acceptable
self.assertSetEqual(set(ext.extract(node, content, set())), set())
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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