servo/tests/unit/style/parsing/length.rs
2017-08-24 10:41:06 -07:00

56 lines
2.5 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use cssparser::{Parser, ParserInput};
use parsing::parse;
use style::context::QuirksMode;
use style::parser::{Parse, ParserContext};
use style::stylesheets::{CssRuleType, Origin};
use style::values::Either;
use style::values::specified::{LengthOrPercentageOrNumber, Number};
use style::values::specified::length::{AbsoluteLength, Length, NoCalcLength};
use style_traits::{PARSING_MODE_ALLOW_UNITLESS_LENGTH, ToCss};
#[test]
fn test_calc() {
assert!(parse(Length::parse, "calc(1px+ 2px)").is_err());
assert!(parse(Length::parse, "calc(calc(1px) + calc(1px + 4px))").is_ok());
assert!(parse(Length::parse, "calc( 1px + 2px )").is_ok());
assert!(parse(Length::parse, "calc(1px + 2px )").is_ok());
assert!(parse(Length::parse, "calc( 1px + 2px)").is_ok());
assert!(parse(Length::parse, "calc( 1px + 2px / ( 1 + 2 - 1))").is_ok());
}
#[test]
fn test_length_literals() {
assert_roundtrip_with_context!(Length::parse, "0.33px", "0.33px");
assert_roundtrip_with_context!(Length::parse, "0.33in", "0.33in");
assert_roundtrip_with_context!(Length::parse, "0.33cm", "0.33cm");
assert_roundtrip_with_context!(Length::parse, "0.33mm", "0.33mm");
assert_roundtrip_with_context!(Length::parse, "0.33q", "0.33q");
assert_roundtrip_with_context!(Length::parse, "0.33pt", "0.33pt");
assert_roundtrip_with_context!(Length::parse, "0.33pc", "0.33pc");
}
#[test]
fn test_parsing_modes() {
// In default length mode, non-zero lengths must have a unit.
assert!(parse(Length::parse, "1").is_err());
// In SVG length mode, non-zero lengths are assumed to be px.
let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
let context = ParserContext::new(Origin::Author, &url,
Some(CssRuleType::Style), PARSING_MODE_ALLOW_UNITLESS_LENGTH,
QuirksMode::NoQuirks);
let mut input = ParserInput::new("1");
let mut parser = Parser::new(&mut input);
let result = Length::parse(&context, &mut parser);
assert!(result.is_ok());
assert_eq!(result.unwrap(), Length::NoCalc(NoCalcLength::Absolute(AbsoluteLength::Px(1.))));
}
#[test]
fn test_zero_percentage_length_or_number() {
assert_eq!(parse(LengthOrPercentageOrNumber::parse, "0"), Ok(Either::First(Number::new(0.))));
}