scripts/tests/style-test-visually

#!/bin/bash
# Copyright 2018 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Visual tests for //tools/devshell/lib/style.sh

# This is not an automated unit test.
# It prints stylized text describing the style to be shown, so a tester
# can validate the expected style is rendered.

# Note that some terminals do not support all terminal styles.
# For instance, italic may not render as italic on MacOS.

source "$(cd "$(dirname "${BASH_SOURCE[0]}")"/../devshell/lib >/dev/null 2>&1 && pwd)"/style.sh || exit $?

runtest() {
  command="$1"; shift
  "${command}" "$@" "${command} $*"
}

style::stylize --help
style::echo --blue $'------------------'
style::printf --help
style::echo --blue $'------------------'
style::error --help
style::echo --blue $'------------------'
style::link --help
style::echo --blue $'----- colors -----'
style::echo --help colors
style::echo --blue $'--- attributes ---'
style::echo --help attributes
style::echo --blue $'------------------'

runtest style::echo --bold
runtest style::echo --bold --color cyan
runtest style::echo --faint --color green
runtest style::echo --italic --color magenta
runtest style::echo --underline --color dark_blue
runtest style::echo --blink --color light_gray
runtest style::echo --pink --background dark_cyan
runtest style::echo --italic --dark_magenta italic "this style may not work in some terminals:"

style::printf --bold '%10s %6s\n' Item Cost
style::printf '%10s %6s\n'        ---- ----
style::printf --purple --background white  '%10s $%6.2f\n' beans 2.90 franks 9.35 cola 7.99 tiramasu 24.50

style::cat --background dark_yellow --black << EOF
Now is the time for all good
people to come to the
aid of their country and world.
EOF

style::cat --background cyan --color black --indent 4 << EOF
Now is the time for all good
people to come to the
aid of their country and world.
EOF

style::info 'INFO: Info here'
style::warning 'WARNING: Watch out!'
style::error 'ERROR: What went wrong now?'
style::link 'http://wikipedia.com'

STYLE_WARNING='--stderr --blink --dark_yellow'
style::warning 'WARNING: Customized warning style, still to stderr! :-)'

STYLE_TO_TTY_ONLY=true  # default is false
style::echo --bold --red "STYLE_TO_TTY_ONLY=$STYLE_TO_TTY_ONLY"
style::echo --stderr --bold --red '
This should still display in bold red, but on stderr' >/dev/null

style::echo --color cyan --faint "
This will not be styled. It doesn't print directly to the tty" | cat

style::echo --stderr --color cyan --faint "
This will not be styled. stderr doesn't print directly to the tty" 2>&1 | cat

STYLE_TO_TTY_ONLY=false
style::echo --bold --red "STYLE_TO_TTY_ONLY=$STYLE_TO_TTY_ONLY"
style::echo --color cyan --faint "
This will be styled even though it doesn't print directly to the tty." | cat

style::echo --stderr --color cyan --faint "
This will be styled even though stderr doesn't print directly to the tty" 2>&1 | cat

# Three flags for the same thing:
echo "This is $(style::echo -f      --bold --yellow LOUD) and soft."
echo "This is $(style::echo --force --bold --yellow LOUD) and soft."
echo "This is $(style::echo --tty   --bold --yellow LOUD) and soft."

style::printf --blod --green 'Bad style' 2>/dev/null || echo "Bad style, Error status: $?"
style::printf --faint --orange 'No orange' 2>/dev/null || echo "No orange! Error status: $?"