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Toot-Mastodon-CLI-TUI-clien.../tests/test_utils.py

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Fix left column padding in timeline with wide characters When the left column contains wide characters (which occupy more than one cell when printed to screen), padding to 30-characters with "{:30}".format() does not work well. This happens for instance when the display name contains unicode characters such as emojis. We fix this by introducing a pad() function in utils module which uses the wcwidth library (https://pypi.org/project/wcwidth/) to compute the length of the text for the column. trunc() function is also adjusted to optionally compute the length of the text to be truncated since, when called from pad(), we now pre-compute this value. We update test for timeline rendering so that the display name now includes an emoji. (Without the fix, the test would not pass as left column would be misaligned.)
2019-01-02 13:22:06 +01:00
from toot import utils
def test_pad():
# guitar symbol will occupy two cells, so padded text should be 1
# character shorter
Cleanup utils dealing with wcwidth strings
2019-02-13 15:42:41 +01:00
text = 'Frank Zappa 🎸'
# Negative values are basically ignored
assert utils.pad(text, -100) is text
# Padding to length smaller than text length does nothing
assert utils.pad(text, 11) is text
assert utils.pad(text, 12) is text
assert utils.pad(text, 13) is text
assert utils.pad(text, 14) is text
assert utils.pad(text, 15) == 'Frank Zappa 🎸 '
assert utils.pad(text, 16) == 'Frank Zappa 🎸 '
assert utils.pad(text, 17) == 'Frank Zappa 🎸 '
assert utils.pad(text, 18) == 'Frank Zappa 🎸 '
assert utils.pad(text, 19) == 'Frank Zappa 🎸 '
assert utils.pad(text, 20) == 'Frank Zappa 🎸 '
def test_trunc():
text = 'Frank Zappa 🎸'
assert utils.trunc(text, 1) == '…'
assert utils.trunc(text, 2) == 'F…'
assert utils.trunc(text, 3) == 'Fr…'
assert utils.trunc(text, 4) == 'Fra…'
assert utils.trunc(text, 5) == 'Fran…'
assert utils.trunc(text, 6) == 'Frank…'
assert utils.trunc(text, 7) == 'Frank…'
assert utils.trunc(text, 8) == 'Frank Z…'
assert utils.trunc(text, 9) == 'Frank Za…'
assert utils.trunc(text, 10) == 'Frank Zap…'
assert utils.trunc(text, 11) == 'Frank Zapp…'
assert utils.trunc(text, 12) == 'Frank Zappa…'
assert utils.trunc(text, 13) == 'Frank Zappa…'
# Truncating to length larger than text length does nothing
assert utils.trunc(text, 14) is text
assert utils.trunc(text, 15) is text
assert utils.trunc(text, 16) is text
assert utils.trunc(text, 17) is text
assert utils.trunc(text, 18) is text
assert utils.trunc(text, 19) is text
assert utils.trunc(text, 20) is text
def test_fit_text():
text = 'Frank Zappa 🎸'
assert utils.fit_text(text, 1) == '…'
assert utils.fit_text(text, 2) == 'F…'
assert utils.fit_text(text, 3) == 'Fr…'
assert utils.fit_text(text, 4) == 'Fra…'
assert utils.fit_text(text, 5) == 'Fran…'
assert utils.fit_text(text, 6) == 'Frank…'
assert utils.fit_text(text, 7) == 'Frank…'
assert utils.fit_text(text, 8) == 'Frank Z…'
assert utils.fit_text(text, 9) == 'Frank Za…'
assert utils.fit_text(text, 10) == 'Frank Zap…'
assert utils.fit_text(text, 11) == 'Frank Zapp…'
assert utils.fit_text(text, 12) == 'Frank Zappa…'
assert utils.fit_text(text, 13) == 'Frank Zappa…'
assert utils.fit_text(text, 14) == 'Frank Zappa 🎸'
assert utils.fit_text(text, 15) == 'Frank Zappa 🎸 '
assert utils.fit_text(text, 16) == 'Frank Zappa 🎸 '
assert utils.fit_text(text, 17) == 'Frank Zappa 🎸 '
assert utils.fit_text(text, 18) == 'Frank Zappa 🎸 '
assert utils.fit_text(text, 19) == 'Frank Zappa 🎸 '
assert utils.fit_text(text, 20) == 'Frank Zappa 🎸 '