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https://github.com/Kozea/WeasyPrint.git
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Avoid rounding errors in tests
This commit is contained in:
Guillaume Ayoub
parent
cb87108ecf
commit
c0d8af6738
@ -27,9 +27,18 @@ TOP = 842
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# Right of the page is 210mm ~= 595pt
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RIGHT = 595
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# TODO: Why do we need these -1 and +1?
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TOP -= 1
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RIGHT += 1
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def assert_rect_almost_equal(rect, values):
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"""Test that PDF rect string equals given values.
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We avoid rounding errors by allowing a delta of 1, as both WeasyPrint and
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Cairo round coordinates in unpredictable ways.
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"""
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if isinstance(rect, bytes):
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rect = rect.decode('ascii')
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for a, b in zip(rect.strip(' []').split(), values):
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assert abs(int(a) - b) <= 1
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@assert_no_logs
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@ -321,24 +330,24 @@ def test_links():
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# 30pt wide (like the image), 20pt high (like line-height)
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assert links[0].get_value('URI', '(.*)') == b'(http://weasyprint.org)'
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assert links[0].get_value('S', '(.*)') == b'/URI'
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assert links[0].get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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0, TOP - 20, 30, TOP).encode('ascii')
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assert_rect_almost_equal(
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links[0].get_value('Rect', '(.*)'), (0, TOP - 20, 30, TOP))
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# The image itself: 30*30pt
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assert links[1].get_value('URI', '(.*)') == b'(http://weasyprint.org)'
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assert links[1].get_value('S', '(.*)') == b'/URI'
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assert links[1].get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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0, TOP - 30, 30, TOP).encode('ascii')
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assert_rect_almost_equal(
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links[1].get_value('Rect', '(.*)'), (0, TOP - 30, 30, TOP))
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# 32pt wide (image + 2 * 1pt of border), 20pt high
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# TODO: destination seems to be currently broken in cairo, see
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# https://lists.cairographics.org/archives/cairo/2018-August/028694.html
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# TODO: replace these commented tests now that we use named destinations
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# assert links[2].get_value('Subtype', '(.*)') == b'/Link'
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# dest = links[2].get_value('Dest', '(.*)').strip(b'[]').split()
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# assert dest[-4] == b'/XYZ'
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# assert [round(float(value)) for value in dest[-3:]] == […]
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assert links[2].get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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10, TOP - 100 - 20, 10 + 32, TOP - 100).encode('ascii')
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assert_rect_almost_equal(
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links[2].get_value('Rect', '(.*)'),
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(10, TOP - 100 - 20, 10 + 32, TOP - 100))
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# The image itself: 32*32pt
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# TODO: same as above
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@ -346,8 +355,9 @@ def test_links():
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# dest = links[3].get_value('Dest', '(.*)').strip(b'[]').split()
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# assert dest[-4] == b'/XYZ'
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# assert [round(float(value)) for value in dest[-3:]] == […]
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assert links[3].get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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10, TOP - 100 - 32, 10 + 32, TOP - 100).encode('ascii')
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assert_rect_almost_equal(
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links[3].get_value('Rect', '(.*)'),
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(10, TOP - 100 - 32, 10 + 32, TOP - 100))
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# 100% wide (block), 30pt high
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assert links[4].get_value('Subtype', '(.*)') == b'/Link'
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@ -358,11 +368,13 @@ def test_links():
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.get_indirect_dict('Names', pdf_file)
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.get_indirect_dict('Dests', pdf_file)
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.byte_string).decode('ascii')
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assert re.search(
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'\\(hello\\) \\[\\d+ \\d+ R /XYZ {} {} {}]'.format(0, TOP - 200, 0),
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names)
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assert links[4].get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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0, TOP - 30, RIGHT, TOP).encode('ascii')
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assert_rect_almost_equal(
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re.search(
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'\\(hello\\) \\[\\d+ \\d+ R /XYZ (\\d+ \\d+ \\d+)]', names
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).group(1),
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(0, TOP - 200, 0))
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assert_rect_almost_equal(
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links[4].get_value('Rect', '(.*)'), (0, TOP - 30, RIGHT, TOP))
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# 100% wide (block), 0pt high
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fileobj = io.BytesIO()
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@ -376,8 +388,8 @@ def test_links():
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assert (
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link.get_value('URI', '(.*)') == b'(http://weasyprint.org/foo/lipsum)')
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assert link.get_value('S', '(.*)') == b'/URI'
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assert link.get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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0, TOP, RIGHT, TOP).encode('ascii')
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assert_rect_almost_equal(
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link.get_value('Rect', '(.*)'), (0, TOP, RIGHT, TOP))
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@assert_no_logs
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@ -392,8 +404,8 @@ def test_relative_links():
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annots = pdf_file.pages[0].get_indirect_dict_array('Annots', pdf_file)[0]
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assert annots.get_value('URI', '(.*)') == b'(../lipsum)'
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assert annots.get_value('S', '(.*)') == b'/URI'
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assert annots.get_value('Rect', '(.*)') == '[ {} {} {} {} ]'.format(
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0, TOP, RIGHT, TOP).encode('ascii')
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assert_rect_almost_equal(
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annots.get_value('Rect', '(.*)'), (0, TOP, RIGHT, TOP))
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@assert_no_logs
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@ -429,10 +441,13 @@ def test_relative_links_internal():
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.get_indirect_dict('Names', pdf_file)
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.get_indirect_dict('Dests', pdf_file)
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.byte_string).decode('ascii')
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assert re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ {} {} {}]'.format(0, TOP, 0), names)
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rect = annots.get_value('Rect', '(.*)').strip(b'[]').split()
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assert [round(float(value)) for value in rect] == [0, TOP, RIGHT, TOP]
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assert_rect_almost_equal(
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re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ (\\d+ \\d+ \\d+)]', names
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).group(1),
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(0, TOP, 0))
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assert_rect_almost_equal(
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annots.get_value('Rect', '(.*)'), (0, TOP, RIGHT, TOP))
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@assert_no_logs
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@ -451,10 +466,13 @@ def test_relative_links_anchors():
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.get_indirect_dict('Names', pdf_file)
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.get_indirect_dict('Dests', pdf_file)
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.byte_string).decode('ascii')
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assert re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ {} {} {}]'.format(0, TOP, 0), names)
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rect = annots.get_value('Rect', '(.*)').strip(b'[]').split()
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assert [round(float(value)) for value in rect] == [0, TOP, RIGHT, TOP]
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assert_rect_almost_equal(
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re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ (\\d+ \\d+ \\d+)]', names
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).group(1),
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(0, TOP, 0))
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assert_rect_almost_equal(
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annots.get_value('Rect', '(.*)'), (0, TOP, RIGHT, TOP))
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@assert_no_logs
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@ -476,11 +494,13 @@ def test_missing_links():
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.get_indirect_dict('Names', pdf_file)
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.get_indirect_dict('Dests', pdf_file)
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.byte_string).decode('ascii')
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assert re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ {} {} {}]'.format(0, TOP - 15, 0),
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names)
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rect = annots.get_value('Rect', '(.*)').strip(b'[]').split()
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assert [round(float(value)) for value in rect] == [0, TOP - 15, RIGHT, TOP]
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assert_rect_almost_equal(
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re.search(
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'\\(lipsum\\) \\[\\d+ \\d+ R /XYZ (\\d+ \\d+ \\d+)]', names
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).group(1),
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(0, TOP - 15, 0))
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assert_rect_almost_equal(
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annots.get_value('Rect', '(.*)'), (0, TOP - 15, RIGHT, TOP))
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assert len(logs) == 1
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assert 'ERROR: No anchor #missing for internal URI reference' in logs[0]
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