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123 lines
3.6 KiB
Python
123 lines
3.6 KiB
Python
# coding: utf8
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"""
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weasyprint.tests.test_text
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--------------------------
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Test the text layout.
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:copyright: Copyright 2011-2013 Simon Sapin and contributors, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from __future__ import division, unicode_literals
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from ..css import StyleDict
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from ..css.properties import INITIAL_VALUES
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from ..text import split_first_line
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from .test_layout import parse, body_children
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from .testing_utils import FONTS, assert_no_logs
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FONTS = FONTS.split(', ')
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def make_text(text, width=None, **style):
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"""Wrapper for split_first_line() creating a StyleDict."""
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style = StyleDict({
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'font_family': ['Nimbus Mono L', 'Liberation Mono', 'FreeMono',
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'monospace'],
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}, INITIAL_VALUES).updated_copy(style)
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return split_first_line(
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text, style, hinting=False, max_width=width, line_width=None)
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@assert_no_logs
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def test_line_content():
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"""Test the line break for various fixed-width lines."""
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for width, remaining in [(100, 'text for test'),
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(45, 'is a text for test')]:
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text = 'This is a text for test'
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_, length, resume_at, _, _, _ = make_text(
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text, width, font_family=FONTS, font_size=19)
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assert text[resume_at:] == remaining
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assert length + 1 == resume_at # +1 is for the removed trailing space
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@assert_no_logs
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def test_line_with_any_width():
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"""Test the auto-fit width of lines."""
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_, _, _, width_1, _, _ = make_text('some text')
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_, _, _, width_2, _, _ = make_text('some text some text')
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assert width_1 < width_2
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@assert_no_logs
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def test_line_breaking():
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"""Test the line breaking."""
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string = 'This is a text for test'
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# These two tests do not really rely on installed fonts
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_, _, resume_at, _, _, _ = make_text(string, 90, font_size=1)
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assert resume_at is None
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_, _, resume_at, _, _, _ = make_text(string, 90, font_size=100)
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assert string[resume_at:] == 'is a text for test'
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_, _, resume_at, _, _, _ = make_text(string, 100, font_family=FONTS,
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font_size=19)
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assert string[resume_at:] == 'text for test'
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@assert_no_logs
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def test_text_dimension():
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"""Test the font size impact on the text dimension."""
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string = 'This is a text for test. This is a test for text.py'
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_, _, _, width_1, height_1, _ = make_text(string, 200, font_size=12)
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_, _, _, width_2, height_2, _ = make_text(string, 200, font_size=20)
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assert width_1 * height_1 < width_2 * height_2
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@assert_no_logs
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def test_text_font_size_zero():
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"""Test a text with a font size set to 0."""
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page, = parse('''
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<style>
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p { font-size: 0; }
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</style>
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<p>test font size zero</p>
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''')
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paragraph, = body_children(page)
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line, = paragraph.children
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# zero-sized text boxes are removed
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assert not line.children
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assert line.height == 0
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assert paragraph.height == 0
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@assert_no_logs
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def test_text_spaced_inlines():
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"""Test a text with inlines separated by a space."""
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page, = parse('''
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<p>start <i><b>bi1</b> <b>bi2</b></i> <b>b1</b> end</p>
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''')
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paragraph, = body_children(page)
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line, = paragraph.children
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start, i, space, b, end = line.children
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assert start.text == 'start '
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assert space.text == ' '
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assert space.width > 0
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assert end.text == ' end'
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bi1, space, bi2 = i.children
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bi1, = bi1.children
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bi2, = bi2.children
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assert bi1.text == 'bi1'
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assert space.text == ' '
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assert space.width > 0
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assert bi2.text == 'bi2'
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b1, = b.children
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assert b1.text == 'b1'
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