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Tokenising variable declarations

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Darren Burns
2022-02-01 11:52:15 +00:00
parent ea2819f65b
commit a99d60f9f8
2 changed files with 105 additions and 5 deletions
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76
tests/css/test_tokenize.py
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import pytest
from textual.css.tokenize import tokenize
from textual.css.tokenizer import Token, TokenizeError
VALID_VARIABLE_NAMES = [
"warning-text",
"warning_text",
"warningtext1",
"1warningtext",
"WarningText1",
"warningtext_",
"warningtext-",
"_warningtext",
"-warningtext",
]
@pytest.mark.parametrize("name", VALID_VARIABLE_NAMES)
def test_variable_declaration_valid_names(name):
css = f"${name}: black on red;"
assert list(tokenize(css, "")) == [
Token(
name="variable_declaration_start", value=f"${name}:", path="", code=css, location=(0, 0)
),
Token(name="whitespace", value=" ", path="", code=css, location=(0, 14)),
Token(name="token", value="black", path="", code=css, location=(0, 15)),
Token(name="whitespace", value=" ", path="", code=css, location=(0, 20)),
Token(name="token", value="on", path="", code=css, location=(0, 21)),
Token(name="whitespace", value=" ", path="", code=css, location=(0, 23)),
Token(name="token", value="red", path="", code=css, location=(0, 24)),
Token(name="variable_declaration_end", value=";", path="", code=css, location=(0, 27)),
]
def test_variable_declaration_no_semicolon():
css = "$x: 1\n$y: 2"
assert list(tokenize(css, "")) == [
Token(name="variable_declaration_start", value="$x:", code=css, path="", location=(0, 0)),
Token(name="whitespace", value=" ", code=css, path="", location=(0, 3)),
Token(name="number", value="1", code=css, path="", location=(0, 4)),
Token(name="variable_declaration_end", value="\n", code=css, path="", location=(0, 5)),
Token(name="variable_declaration_start", value="$y:", code=css, path="", location=(1, 0)),
Token(name="whitespace", value=" ", code=css, path="", location=(1, 3)),
Token(name="number", value="2", code=css, path="", location=(1, 4)),
]
def test_variable_declaration_invalid_value():
css = "$x:(@$12x)"
with pytest.raises(TokenizeError):
list(tokenize(css, ""))
def test_variables_declarations_amongst_rulesets():
css = "$x:1; .thing{text:red;} $y:2;"
tokens = list(tokenize(css, ""))
assert tokens == [
Token(name='variable_declaration_start', value='$x:', path='', code=css, location=(0, 0)),
Token(name='number', value='1', path='', code=css, location=(0, 3)),
Token(name='variable_declaration_end', value=';', path='', code=css, location=(0, 4)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 5)),
Token(name='selector_start_class', value='.thing', path='', code=css, location=(0, 6)),
Token(name='declaration_set_start', value='{', path='', code=css, location=(0, 12)),
Token(name='declaration_name', value='text:', path='', code=css, location=(0, 13)),
Token(name='token', value='red', path='', code=css, location=(0, 18)),
Token(name='declaration_end', value=';', path='', code=css, location=(0, 21)),
Token(name='declaration_set_end', value='}', path='', code=css, location=(0, 22)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 23)),
Token(name='variable_declaration_start', value='$y:', path='', code=css, location=(0, 24)),
Token(name='number', value='2', path='', code=css, location=(0, 27)),
Token(name='variable_declaration_end', value=';', path='', code=css, location=(0, 28)),
]