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add tests for exif string fields

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test exif string tag set/save/load
This commit is contained in:
John Cupitt 2018-07-06 17:01:38 +01:00
parent 51e7645859
commit 43199e7b27
1 changed files with 76 additions and 43 deletions
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119
test/test-suite/test_foreign.py
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@ -119,7 +119,7 @@ class TestForeign:
x = None
@skip_if_no('jpegload')
@skip_if_no("jpegload")
def test_jpeg(self):
def jpeg_valid(im):
a = im(10, 10)
@ -147,9 +147,12 @@ class TestForeign:
# can set, save and load new orientation
x = pyvips.Image.new_from_file(JPEG_FILE)
x = x.copy()
x.set("orientation", 2)
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x = pyvips.Image.new_from_file(filename)
y = x.get("orientation")
assert y == 2
@ -157,26 +160,80 @@ class TestForeign:
# can remove orientation, save, load again, orientation
# has reset
x.remove("orientation")
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x = pyvips.Image.new_from_file(filename)
y = x.get("orientation")
assert y == 1
# autorotate load works
filename = temp_filename(self.tempdir, '.jpg')
x = pyvips.Image.new_from_file(JPEG_FILE)
x = x.copy()
x.set("orientation", 6)
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x1 = pyvips.Image.new_from_file(filename)
x2 = pyvips.Image.new_from_file(filename, autorotate=True)
assert x1.width == x2.height
assert x1.height == x2.width
@pytest.mark.skipif(not have("pngload") or
not os.path.isfile(PNG_FILE),
reason="no png support, skipping test")
# can set, save and reload ASCII string fields
x = pyvips.Image.new_from_file(JPEG_FILE)
x = x.copy()
x.set_type(pyvips.GValue.gstr_type,
"exif-ifd0-ImageDescription", "hello world")
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x = pyvips.Image.new_from_file(filename)
y = x.get("exif-ifd0-ImageDescription")
# can't use == since the string will have an extra " (xx, yy, zz)"
# format area at the end
assert y.startswith("hello world")
# can set, save and reload UTF16 string fields ... pyvips is
# utf8, but it will be coded as utf16 and back for the XP* fields
x = pyvips.Image.new_from_file(JPEG_FILE)
x = x.copy()
x.set_type(pyvips.GValue.gstr_type, "exif-ifd0-XPComment", "йцук")
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x = pyvips.Image.new_from_file(filename)
y = x.get("exif-ifd0-XPComment")
# can't use == since the string will have an extra " (xx, yy, zz)"
# format area at the end
assert y.startswith("йцук")
# can set/save/load UserComment, a tag which has the
# encoding in the first 8 bytes ... though libexif only supports
# ASCII for this
x = pyvips.Image.new_from_file(JPEG_FILE)
x = x.copy()
x.set_type(pyvips.GValue.gstr_type,
"exif-ifd2-UserComment", "hello world")
filename = temp_filename(self.tempdir, '.jpg')
x.write_to_file(filename)
x = pyvips.Image.new_from_file(filename)
y = x.get("exif-ifd2-UserComment")
# can't use == since the string will have an extra " (xx, yy, zz)"
# format area at the end
assert y.startswith("hello world")
@skip_if_no("pngload")
def test_png(self):
def png_valid(im):
a = im(10, 10)
@ -191,9 +248,7 @@ class TestForeign:
self.save_load("%s.png", self.mono)
self.save_load("%s.png", self.colour)
@pytest.mark.skipif(not have("tiffload") or
not os.path.isfile(TIF_FILE),
reason="no tiff support, skipping test")
@skip_if_no("tiffload")
def test_tiff(self):
def tiff_valid(im):
a = im(10, 10)
@ -314,9 +369,7 @@ class TestForeign:
assert a.height == b.height
assert a.avg() == b.avg()
@pytest.mark.skipif(not have("magickload") or
not os.path.isfile(BMP_FILE),
reason="no magick support, skipping test")
@skip_if_no("magickload")
def test_magickload(self):
def bmp_valid(im):
a = im(100, 100)
@ -377,8 +430,7 @@ class TestForeign:
self.colour, 0, format="BMP")
self.save_load("%s.bmp", self.colour)
@pytest.mark.skipif(not have("webpload") or not os.path.isfile(WEBP_FILE),
reason="no webp support, skipping test")
@skip_if_no("webpload")
def test_webp(self):
def webp_valid(im):
a = im(10, 10)
@ -428,9 +480,7 @@ class TestForeign:
y = pyvips.Image.new_from_buffer(buf, "")
assert y.get("orientation") == 6
@pytest.mark.skipif(not have("analyzeload") or
not os.path.isfile(ANALYZE_FILE),
reason="no analyze support, skipping test")
@skip_if_no("analyzeload")
def test_analyzeload(self):
def analyze_valid(im):
a = im(10, 10)
@ -441,9 +491,7 @@ class TestForeign:
self.file_loader("analyzeload", ANALYZE_FILE, analyze_valid)
@pytest.mark.skipif(not have("matload") or
not os.path.isfile(MATLAB_FILE),
reason="no matlab support, skipping test")
@skip_if_no("matload")
def test_matload(self):
def matlab_valid(im):
a = im(10, 10)
@ -454,9 +502,7 @@ class TestForeign:
self.file_loader("matload", MATLAB_FILE, matlab_valid)
@pytest.mark.skipif(not have("openexrload") or
not os.path.isfile(EXR_FILE),
reason="no openexr support, skipping test")
@skip_if_no("openexrload")
def test_openexrload(self):
def exr_valid(im):
a = im(10, 10)
@ -469,9 +515,7 @@ class TestForeign:
self.file_loader("openexrload", EXR_FILE, exr_valid)
@pytest.mark.skipif(not have("fitsload") or
not os.path.isfile(FITS_FILE),
reason="no fits support, skipping test")
@skip_if_no("fitsload")
def test_fitsload(self):
def fits_valid(im):
a = im(10, 10)
@ -484,9 +528,7 @@ class TestForeign:
self.file_loader("fitsload", FITS_FILE, fits_valid)
self.save_load("%s.fits", self.mono)
@pytest.mark.skipif(not have("openslideload") or # noqa: E501
not os.path.isfile(OPENSLIDE_FILE),
reason="no openslide support, skipping test")
@skip_if_no("openslideload")
def test_openslideload(self):
def openslide_valid(im):
a = im(10, 10)
@ -497,9 +539,7 @@ class TestForeign:
self.file_loader("openslideload", OPENSLIDE_FILE, openslide_valid)
@pytest.mark.skipif(not have("pdfload") or
not os.path.isfile(PDF_FILE),
reason="no pdf support, skipping test")
@skip_if_no("pdfload")
def test_pdfload(self):
def pdf_valid(im):
a = im(10, 10)
@ -521,9 +561,7 @@ class TestForeign:
assert abs(im.width * 2 - x.width) < 2
assert abs(im.height * 2 - x.height) < 2
@pytest.mark.skipif(not have("gifload") or
not os.path.isfile(GIF_FILE),
reason="no gif support, skipping test")
@skip_if_no("gifload")
def test_gifload(self):
def gif_valid(im):
a = im(10, 10)
@ -549,9 +587,7 @@ class TestForeign:
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, page=1, n=-1)
assert x2.height == 4 * x1.height
@pytest.mark.skipif(not have("svgload") or
not os.path.isfile(SVG_FILE),
reason="no svg support, skipping test")
@skip_if_no("svgload")
def test_svgload(self):
def svg_valid(im):
a = im(10, 10)
@ -590,21 +626,18 @@ class TestForeign:
def test_matrix(self):
self.save_load("%s.mat", self.mono)
@pytest.mark.skipif(not have("ppmload"),
reason="no PPM support, skipping test")
@skip_if_no("ppmload")
def test_ppm(self):
self.save_load("%s.ppm", self.mono)
self.save_load("%s.ppm", self.colour)
@pytest.mark.skipif(not have("radload"),
reason="no Radiance support, skipping test")
@skip_if_no("radload")
def test_rad(self):
self.save_load("%s.hdr", self.colour)
self.save_buffer_tempfile("radsave_buffer", ".hdr",
self.rad, max_diff=0)
@pytest.mark.skipif(not have("dzsave"),
reason="no dzsave support, skipping test")
@skip_if_no("dzsaveload")
def test_dzsave(self):
# dzsave is hard to test, there are so many options
# test each option separately and hope they all function together