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# -*- test-case-name: twisted.conch.test.test_text -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
from twisted.conch.insults import text
from twisted.conch.insults.text import attributes as A
from twisted.trial import unittest
class FormattedTextTests(unittest.TestCase):
"""
Tests for assembling formatted text.
"""
def test_trivial(self):
"""
Using no formatting attributes produces no VT102 control sequences in
the flattened output.
"""
self.assertEqual(
text.assembleFormattedText(A.normal["Hello, world."]), "Hello, world."
)
def test_bold(self):
"""
The bold formatting attribute, L{A.bold}, emits the VT102 control
sequence to enable bold when flattened.
"""
self.assertEqual(
text.assembleFormattedText(A.bold["Hello, world."]), "\x1b[1mHello, world."
)
def test_underline(self):
"""
The underline formatting attribute, L{A.underline}, emits the VT102
control sequence to enable underlining when flattened.
"""
self.assertEqual(
text.assembleFormattedText(A.underline["Hello, world."]),
"\x1b[4mHello, world.",
)
def test_blink(self):
"""
The blink formatting attribute, L{A.blink}, emits the VT102 control
sequence to enable blinking when flattened.
"""
self.assertEqual(
text.assembleFormattedText(A.blink["Hello, world."]), "\x1b[5mHello, world."
)
def test_reverseVideo(self):
"""
The reverse-video formatting attribute, L{A.reverseVideo}, emits the
VT102 control sequence to enable reversed video when flattened.
"""
self.assertEqual(
text.assembleFormattedText(A.reverseVideo["Hello, world."]),
"\x1b[7mHello, world.",
)
def test_minus(self):
"""
Formatting attributes prefixed with a minus (C{-}) temporarily disable
the prefixed attribute, emitting no VT102 control sequence to enable
it in the flattened output.
"""
self.assertEqual(
text.assembleFormattedText(
A.bold[A.blink["Hello", -A.bold[" world"], "."]]
),
"\x1b[1;5mHello\x1b[0;5m world\x1b[1;5m.",
)
def test_foreground(self):
"""
The foreground color formatting attribute, L{A.fg}, emits the VT102
control sequence to set the selected foreground color when flattened.
"""
self.assertEqual(
text.assembleFormattedText(
A.normal[A.fg.red["Hello, "], A.fg.green["world!"]]
),
"\x1b[31mHello, \x1b[32mworld!",
)
def test_background(self):
"""
The background color formatting attribute, L{A.bg}, emits the VT102
control sequence to set the selected background color when flattened.
"""
self.assertEqual(
text.assembleFormattedText(
A.normal[A.bg.red["Hello, "], A.bg.green["world!"]]
),
"\x1b[41mHello, \x1b[42mworld!",
)
def test_flattenDeprecated(self):
"""
L{twisted.conch.insults.text.flatten} emits a deprecation warning when
imported or accessed.
"""
warningsShown = self.flushWarnings([self.test_flattenDeprecated])
self.assertEqual(len(warningsShown), 0)
# Trigger the deprecation warning.
text.flatten
warningsShown = self.flushWarnings([self.test_flattenDeprecated])
self.assertEqual(len(warningsShown), 1)
self.assertEqual(warningsShown[0]["category"], DeprecationWarning)
self.assertEqual(
warningsShown[0]["message"],
"twisted.conch.insults.text.flatten was deprecated in Twisted "
"13.1.0: Use twisted.conch.insults.text.assembleFormattedText "
"instead.",
)
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