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textual/tests/css/test_stylesheet.py
2022-05-03 14:52:32 +01:00

102 lines
3.6 KiB
Python

from contextlib import nullcontext as does_not_raise
from typing import Any
import pytest
from textual.color import Color
from textual.css._help_renderables import HelpText
from textual.css.stylesheet import Stylesheet, StylesheetParseError
from textual.css.tokenizer import TokenizeError
@pytest.mark.parametrize(
"css_value,expectation,expected_color",
[
# Valid values:
["transparent", does_not_raise(), Color(0, 0, 0, 0)],
["ansi_red", does_not_raise(), Color(128, 0, 0)],
["ansi_bright_magenta", does_not_raise(), Color(255, 0, 255)],
["red", does_not_raise(), Color(255, 0, 0)],
["lime", does_not_raise(), Color(0, 255, 0)],
["coral", does_not_raise(), Color(255, 127, 80)],
["aqua", does_not_raise(), Color(0, 255, 255)],
["deepskyblue", does_not_raise(), Color(0, 191, 255)],
["rebeccapurple", does_not_raise(), Color(102, 51, 153)],
["#ffcc00", does_not_raise(), Color(255, 204, 0)],
["#ffcc0033", does_not_raise(), Color(255, 204, 0, 0.2)],
["rgb(200,90,30)", does_not_raise(), Color(200, 90, 30)],
["rgba(200,90,30,0.3)", does_not_raise(), Color(200, 90, 30, 0.3)],
# Some invalid ones:
["coffee", pytest.raises(StylesheetParseError), None], # invalid color name
["ansi_dark_cyan", pytest.raises(StylesheetParseError), None],
["red 4", pytest.raises(StylesheetParseError), None], # space in it
["1", pytest.raises(StylesheetParseError), None], # invalid value
["()", pytest.raises(TokenizeError), None], # invalid tokens
# TODO: implement hex colors with 3 chars? @link https://devdocs.io/css/color_value
["#09f", pytest.raises(TokenizeError), None],
# TODO: allow spaces in rgb/rgba expressions?
["rgb(200, 90, 30)", pytest.raises(TokenizeError), None],
["rgba(200,90,30, 0.4)", pytest.raises(TokenizeError), None],
],
)
def test_color_property_parsing(css_value, expectation, expected_color):
stylesheet = Stylesheet()
css = """
* {
background: ${COLOR};
}
""".replace(
"${COLOR}", css_value
)
with expectation:
stylesheet.add_source(css)
stylesheet.parse()
if expected_color:
css_rule = stylesheet.rules[0]
assert css_rule.styles.background == expected_color
@pytest.mark.parametrize(
"css_property_name,expected_property_name_suggestion",
[
["backgroundu", "background"],
["bckgroundu", "background"],
["ofset-x", "offset-x"],
["colr", "color"],
["colour", "color"],
["wdth", "width"],
["wth", "width"],
["wh", None],
["xkcd", None],
],
)
def test_did_you_mean_for_css_property_names(
css_property_name, expected_property_name_suggestion
):
stylesheet = Stylesheet()
css = """
* {
border: blue;
${PROPERTY}: red;
}
""".replace(
"${PROPERTY}", css_property_name
)
stylesheet.add_source(css)
with pytest.raises(StylesheetParseError) as err:
stylesheet.parse()
_, help_text = err.value.errors.rules[0].errors[0] # type: Any, HelpText
assert help_text.summary == f"Invalid CSS property [i]{css_property_name}[/]"
expected_bullets_length = 1 if expected_property_name_suggestion else 0
assert len(help_text.bullets) == expected_bullets_length
if expected_property_name_suggestion is not None:
expected_suggestion_message = (
f"Did you mean [i]{expected_property_name_suggestion}[/]?"
)
assert help_text.bullets[0].markup == expected_suggestion_message